6968063: provide examples of code that generate diagnostics

Reviewed-by: mcimadamore

make/build.xml

@@ -322,6 +322,35 @@
             datafile="${build.coverage.dir}/cobertura.ser"/>
     </target>
 
+    <target name="diags-examples" depends="build-javac">
+        <!-- can override the following on the command line if desired. -->
+        <property name="diags.examples.out" location="${build.dir}/diag-examples/diags-examples.html"/>
+        <mkdir dir="${build.dir}/diag-examples/classes"/>
+        <javac fork="true"
+            executable="${dist.bin.dir}/javac"
+            srcdir="test/tools/javac/diags"
+            destdir="${build.dir}/diag-examples/classes"
+            includes="Example.java,FileManager.java,HTMLWriter.java,RunExamples.java"
+            sourcepath=""
+            classpath="${dist.lib.dir}/javac.jar"
+            includeAntRuntime="no"
+            debug="${javac.debug}"
+            debuglevel="${javac.debuglevel}"/>
+        <java fork="true"
+            jvm="${target.java.home}/bin/java"
+            dir="test/tools/javac/diags"
+            classpath="${build.dir}/diag-examples/classes;${dist.lib.dir}/javac.jar"
+            classname="RunExamples">
+            <arg value="-examples"/>
+            <arg value="examples"/>
+            <arg value="-o"/>
+            <arg file="${diags.examples.out}"/>
+            <arg value="-showFiles"/>
+            <arg value="-title"/>
+            <arg value="Examples of javac diagnostics"/>
+        </java>
+    </target>
+
 
     <!--
     **** Debugging/diagnostic targets.

test/tools/javac/diags/CheckExamples.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 6968063
+ * @summary provide examples of code that generate diagnostics
+ * @build Example CheckExamples
+ * @run main CheckExamples
+ */
+
+import java.io.*;
+import java.util.*;
+
+/**
+ * Check invariants for a set of examples.
+ * -- each example should exactly declare the keys that will be generated when
+ *      it is run.
+ * -- together, the examples should cover the set of resource keys in the
+ *      compiler.properties bundle. A list of exceptions may be given in the
+ *      not-yet.txt file. Entries on the not-yet.txt list should not be
+ *      covered by examples.
+ * When new keys are added to the resource buncle, it is strongly recommended
+ * that corresponding new examples be added here, if at all practical, instead
+ * of simply and lazily being added to the not-yet.txt list.
+ */
+public class CheckExamples {
+    /**
+     * Standard entry point.
+     */
+    public static void main(String... args) throws Exception {
+        new CheckExamples().run();
+    }
+
+    /**
+     * Run the test.
+     */
+    void run() throws Exception {
+        Set<Example> examples = getExamples();
+
+        Set<String> notYetList = getNotYetList();
+        Set<String> declaredKeys = new TreeSet<String>();
+        for (Example e: examples) {
+            Set<String> e_decl = e.getDeclaredKeys();
+            Set<String> e_actual = e.getActualKeys();
+            for (String k: e_decl) {
+                if (!e_actual.contains(k))
+                    error("Example " + e + " declares key " + k + " but does not generate it");
+            }
+            for (String k: e_actual) {
+                if (!e_decl.contains(k))
+                    error("Example " + e + " generates key " + k + " but does not declare it");
+            }
+            for (String k: e.getDeclaredKeys()) {
+                if (notYetList.contains(k))
+                    error("Example " + e + " declares key " + k + " which is also on the \"not yet\" list");
+                declaredKeys.add(k);
+            }
+        }
+
+        ResourceBundle b =
+            ResourceBundle.getBundle("com.sun.tools.javac.resources.compiler");
+        Set<String> resourceKeys = new TreeSet<String>(b.keySet());
+
+        for (String dk: declaredKeys) {
+            if (!resourceKeys.contains(dk))
+                error("Key " + dk + " is declared in tests but is not a valid key in resource bundle");
+        }
+
+        for (String nk: notYetList) {
+            if (!resourceKeys.contains(nk))
+                error("Key " + nk + " is declared in not-yet list but is not a valid key in resource bundle");
+        }
+
+        for (String rk: resourceKeys) {
+            if (!declaredKeys.contains(rk) && !notYetList.contains(rk))
+                error("Key " + rk + " is declared in resource bundle but is not in tests or not-yet list");
+        }
+
+        System.err.println(examples.size() + " examples checked");
+        System.err.println(notYetList.size() + " keys on not-yet list");
+
+        Counts declaredCounts = new Counts(declaredKeys);
+        Counts resourceCounts = new Counts(resourceKeys);
+        List<String> rows = new ArrayList<String>(Arrays.asList(Counts.prefixes));
+        rows.add("other");
+        rows.add("total");
+        System.err.println();
+        System.err.println(String.format("%-14s %15s %15s %4s",
+                "prefix", "#keys in tests", "#keys in javac", "%"));
+        for (String p: rows) {
+            int d = declaredCounts.get(p);
+            int r = resourceCounts.get(p);
+            System.err.print(String.format("%-14s %15d %15d", p, d, r));
+            if (r != 0)
+                System.err.print(String.format(" %3d%%", (d * 100) / r));
+            System.err.println();
+        }
+
+        if (errors > 0)
+            throw new Exception(errors + " errors occurred.");
+    }
+
+    /**
+     * Get the complete set of examples to be checked.
+     */
+    Set<Example> getExamples() {
+        Set<Example> results = new TreeSet<Example>();
+        File testSrc = new File(System.getProperty("test.src"));
+        File examples = new File(testSrc, "examples");
+        for (File f: examples.listFiles()) {
+            if (f.isDirectory() || f.isFile() && f.getName().endsWith(".java"))
+                results.add(new Example(f));
+        }
+        return results;
+    }
+
+    /**
+     * Get the contents of the "not-yet" list.
+     */
+    Set<String> getNotYetList() {
+        Set<String> results = new TreeSet<String>();
+        File testSrc = new File(System.getProperty("test.src"));
+        File notYetList = new File(testSrc, "examples.not-yet.txt");
+        try {
+            String[] lines = read(notYetList).split("[\r\n]");
+            for (String line: lines) {
+                int hash = line.indexOf("#");
+                if (hash != -1)
+                    line = line.substring(0, hash).trim();
+                if (line.matches("[A-Za-z0-9-_.]+"))
+                    results.add(line);
+            }
+        } catch (IOException e) {
+            throw new Error(e);
+        }
+        return results;
+    }
+
+    /**
+     * Read the contents of a file.
+     */
+    String read(File f) throws IOException {
+        byte[] bytes = new byte[(int) f.length()];
+        DataInputStream in = new DataInputStream(new FileInputStream(f));
+        try {
+            in.readFully(bytes);
+        } finally {
+            in.close();
+        }
+        return new String(bytes);
+    }
+
+    /**
+     * Report an error.
+     */
+    void error(String msg) {
+        System.err.println("Error: " + msg);
+        errors++;
+    }
+
+    int errors;
+
+    static class Counts {
+        static String[] prefixes = {
+            "compiler.err.",
+            "compiler.warn.",
+            "compiler.note.",
+            "compiler.misc."
+        };
+
+        Counts(Set<String> keys) {
+            nextKey:
+            for (String k: keys) {
+                for (String p: prefixes) {
+                    if (k.startsWith(p)) {
+                        inc(p);
+                        continue nextKey;
+                    }
+                }
+                inc("other");
+            }
+            table.put("total", keys.size());
+        }
+
+        int get(String p) {
+             Integer i = table.get(p);
+             return (i == null ? 0 : i);
+        }
+
+        void inc(String p) {
+            Integer i = table.get(p);
+            table.put(p, (i == null ? 1 : i + 1));
+        }
+
+        Map<String,Integer> table = new HashMap<String,Integer>();
+    };
+}

test/tools/javac/diags/Example.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import com.sun.tools.javac.file.JavacFileManager;
+import java.io.*;
+import java.util.*;
+import java.util.regex.*;
+import javax.tools.Diagnostic;
+import javax.tools.DiagnosticCollector;
+import javax.tools.JavaCompiler;
+import javax.tools.JavaCompiler.CompilationTask;
+import javax.tools.JavaFileObject;
+import javax.tools.StandardJavaFileManager;
+import javax.tools.ToolProvider;
+
+// The following two classes are both used, but cannot be imported directly
+// import com.sun.tools.javac.Main
+// import com.sun.tools.javac.main.Main
+
+import com.sun.tools.javac.util.Context;
+import com.sun.tools.javac.util.JavacMessages;
+import com.sun.tools.javac.util.JCDiagnostic;
+import java.net.URL;
+import java.net.URLClassLoader;
+import javax.annotation.processing.Processor;
+
+/**
+ * Class to handle example code designed to illustrate javac diagnostic messages.
+ */
+class Example implements Comparable<Example> {
+    /* Create an Example from the files found at path.
+     * The head of the file, up to the first Java code, is scanned
+     * for information about the test, such as what resource keys it
+     * generates when run, what options are required to run it, and so on.
+     */
+    Example(File file) {
+        this.file = file;
+        declaredKeys = new TreeSet<String>();
+        srcFiles = new ArrayList<File>();
+        procFiles = new ArrayList<File>();
+        supportFiles = new ArrayList<File>();
+        srcPathFiles = new ArrayList<File>();
+
+        findFiles(file, srcFiles);
+        for (File f: srcFiles) {
+            parse(f);
+        }
+
+        if (infoFile == null)
+            throw new Error("Example " + file + " has no info file");
+    }
+
+    private void findFiles(File f, List<File> files) {
+        if (f.isDirectory()) {
+            for (File c: f.listFiles()) {
+                if (files == srcFiles && c.getName().equals("processors"))
+                    findFiles(c, procFiles);
+                else if (files == srcFiles && c.getName().equals("sourcepath")) {
+                    srcPathDir = c;
+                    findFiles(c, srcPathFiles);
+                } else if (files == srcFiles && c.getName().equals("support"))
+                    findFiles(c, supportFiles);
+                else
+                    findFiles(c, files);
+            }
+        } else if (f.isFile() && f.getName().endsWith(".java")) {
+            files.add(f);
+        }
+    }
+
+    private void parse(File f) {
+        Pattern keyPat = Pattern.compile(" *// *key: *([^ ]+) *");
+        Pattern optPat = Pattern.compile(" *// *options: *(.*)");
+        Pattern runPat = Pattern.compile(" *// *run: *(.*)");
+        Pattern javaPat = Pattern.compile(" *@?[A-Za-z].*");
+        try {
+            String[] lines = read(f).split("[\r\n]+");
+            for (String line: lines) {
+                Matcher keyMatch = keyPat.matcher(line);
+                if (keyMatch.matches()) {
+                    foundInfo(f);
+                    declaredKeys.add(keyMatch.group(1));
+                    continue;
+                }
+                Matcher optMatch = optPat.matcher(line);
+                if (optMatch.matches()) {
+                    foundInfo(f);
+                    options = Arrays.asList(optMatch.group(1).trim().split(" +"));
+                    continue;
+                }
+                Matcher runMatch = runPat.matcher(line);
+                if (runMatch.matches()) {
+                    foundInfo(f);
+                    runOpts = Arrays.asList(runMatch.group(1).trim().split(" +"));
+                }
+                if (javaPat.matcher(line).matches())
+                    break;
+            }
+        } catch (IOException e) {
+            throw new Error(e);
+        }
+    }
+
+    private void foundInfo(File file) {
+        if (infoFile != null && !infoFile.equals(file))
+            throw new Error("multiple info files found: " + infoFile + ", " + file);
+        infoFile = file;
+    }
+
+    String getName() {
+        return file.getName();
+    }
+
+    /**
+     * Get the set of resource keys that this test declares it will generate
+     * when it is run.
+     */
+    Set<String> getDeclaredKeys() {
+        return declaredKeys;
+    }
+
+    /**
+     * Get the set of resource keys that this test generates when it is run.
+     * The test will be run if it has not already been run.
+     */
+    Set<String> getActualKeys() {
+        if (actualKeys == null)
+            actualKeys = run(false);
+        return actualKeys;
+    }
+
+    /**
+     * Run the test.  Information in the test header is used to determine
+     * how to run the test.
+     */
+    void run(PrintWriter out, boolean raw, boolean verbose) {
+        if (out == null)
+            throw new NullPointerException();
+        try {
+            run(out, null, raw, verbose);
+        } catch (IOException e) {
+            e.printStackTrace(out);
+        }
+    }
+
+    Set<String> run(boolean verbose) {
+        Set<String> keys = new TreeSet<String>();
+        try {
+            run(null, keys, true, verbose);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return keys;
+    }
+
+    /**
+     * Run the test.  Information in the test header is used to determine
+     * how to run the test.
+     */
+    private void run(PrintWriter out, Set<String> keys, boolean raw, boolean verbose)
+            throws IOException {
+        ClassLoader loader = getClass().getClassLoader();
+        if (supportFiles.size() > 0) {
+            File supportDir = new File(tempDir, "support");
+            supportDir.mkdirs();
+            clean(supportDir);
+            List<String> sOpts = Arrays.asList("-d", supportDir.getPath());
+            new Jsr199Compiler(verbose).run(null, null, false, sOpts, procFiles);
+            URLClassLoader ucl =
+                    new URLClassLoader(new URL[] { supportDir.toURI().toURL() }, loader);
+            loader = ucl;
+        }
+
+        File classesDir = new File(tempDir, "classes");
+        classesDir.mkdirs();
+        clean(classesDir);
+
+        List<String> opts = new ArrayList<String>();
+        opts.add("-d");
+        opts.add(classesDir.getPath());
+        if (options != null)
+            opts.addAll(options);
+
+        if (procFiles.size() > 0) {
+            List<String> pOpts = Arrays.asList("-d", classesDir.getPath());
+            new Jsr199Compiler(verbose).run(null, null, false, pOpts, procFiles);
+            opts.add("-classpath"); // avoid using -processorpath for now
+            opts.add(classesDir.getPath());
+            createAnnotationServicesFile(classesDir, procFiles);
+        }
+
+        if (srcPathDir != null) {
+            opts.add("-sourcepath");
+            opts.add(srcPathDir.getPath());
+        }
+
+        try {
+            Compiler c = Compiler.getCompiler(runOpts, verbose);
+            c.run(out, keys, raw, opts, srcFiles);
+        } catch (IllegalArgumentException e) {
+            if (out != null) {
+                out.println("Invalid value for run tag: " + runOpts);
+            }
+        }
+    }
+
+    void createAnnotationServicesFile(File dir, List<File> procFiles) throws IOException {
+        File servicesDir = new File(new File(dir, "META-INF"), "services");
+        servicesDir.mkdirs();
+        File annoServices = new File(servicesDir, Processor.class.getName());
+        Writer out = new FileWriter(annoServices);
+        try {
+            for (File f: procFiles) {
+                out.write(f.getName().toString().replace(".java", ""));
+            }
+        } finally {
+            out.close();
+        }
+    }
+
+    @Override
+    public int compareTo(Example e) {
+        return file.compareTo(e.file);
+    }
+
+    @Override
+    public String toString() {
+        return file.getPath();
+    }
+
+    /**
+     * Read the contents of a file.
+     */
+    private String read(File f) throws IOException {
+        byte[] bytes = new byte[(int) f.length()];
+        DataInputStream in = new DataInputStream(new FileInputStream(f));
+        try {
+            in.readFully(bytes);
+        } finally {
+            in.close();
+        }
+        return new String(bytes);
+    }
+
+    /**
+     * Clean the contents of a directory.
+     */
+    boolean clean(File dir) {
+        boolean ok = true;
+        for (File f: dir.listFiles()) {
+            if (f.isDirectory())
+                ok &= clean(f);
+            ok &= f.delete();
+        }
+        return ok;
+    }
+
+    File file;
+    List<File> srcFiles;
+    List<File> procFiles;
+    File srcPathDir;
+    List<File> srcPathFiles;
+    List<File> supportFiles;
+    File infoFile;
+    private List<String> runOpts;
+    private List<String> options;
+    private Set<String> actualKeys;
+    private Set<String> declaredKeys;
+
+    static File tempDir = new File(System.getProperty("java.io.tmpdir"));
+    static void setTempDir(File tempDir) {
+        Example.tempDir = tempDir;
+    }
+
+    abstract static class Compiler {
+        static Compiler getCompiler(List<String> opts, boolean verbose) {
+            String first;
+            String[] rest;
+            if (opts == null || opts.size() == 0) {
+                first = null;
+                rest = new String[0];
+            } else {
+                first = opts.get(0);
+                rest = opts.subList(1, opts.size()).toArray(new String[opts.size() - 1]);
+            }
+            if (first == null || first.equals("jsr199"))
+                return new Jsr199Compiler(verbose, rest);
+            else if (first.equals("simple"))
+                return new SimpleCompiler(verbose);
+            else if (first.equals("backdoor"))
+                return new BackdoorCompiler(verbose);
+            else
+                throw new IllegalArgumentException(first);
+        }
+
+        protected Compiler(boolean verbose) {
+            this.verbose = verbose;
+        }
+
+        abstract boolean run(PrintWriter out, Set<String> keys, boolean raw,
+                List<String> opts,  List<File> files);
+
+        void setSupportClassLoader(ClassLoader cl) {
+            loader = cl;
+        }
+
+        protected ClassLoader loader;
+        protected boolean verbose;
+    }
+
+    /**
+     * Compile using the JSR 199 API.  The diagnostics generated are
+     * scanned for resource keys.   Not all diagnostic keys are generated
+     * via the JSR 199 API -- for example, rich diagnostics are not directly
+     * accessible, and some diagnostics generated by the file manager may
+     * not be generated (for example, the JSR 199 file manager does not see
+     * -Xlint:path).
+     */
+    static class Jsr199Compiler extends Compiler {
+        List<String> fmOpts;
+
+        Jsr199Compiler(boolean verbose, String... args) {
+            super(verbose);
+            for (int i = 0; i < args.length; i++) {
+                String arg = args[i];
+                if (arg.equals("-filemanager") && (i + 1 < args.length)) {
+                    fmOpts = Arrays.asList(args[++i].split(","));
+                } else
+                    throw new IllegalArgumentException(arg);
+            }
+        }
+
+        @Override
+        boolean run(PrintWriter out, Set<String> keys, boolean raw, List<String> opts, List<File> files) {
+            if (out != null && keys != null)
+                throw new IllegalArgumentException();
+
+            if (verbose)
+                System.err.println("run_jsr199: " + opts + " " + files);
+
+            DiagnosticCollector<JavaFileObject> dc = null;
+            if (keys != null)
+                dc = new DiagnosticCollector<JavaFileObject>();
+
+            if (raw) {
+                List<String> newOpts = new ArrayList<String>();
+                newOpts.add("-XDrawDiagnostics");
+                newOpts.addAll(opts);
+                opts = newOpts;
+            }
+
+            JavaCompiler c = ToolProvider.getSystemJavaCompiler();
+
+            StandardJavaFileManager fm = c.getStandardFileManager(dc, null, null);
+            if (fmOpts != null)
+                fm = new FileManager(fm, fmOpts);
+
+            Iterable<? extends JavaFileObject> fos = fm.getJavaFileObjectsFromFiles(files);
+
+            CompilationTask t = c.getTask(out, fm, dc, opts, null, fos);
+            Boolean ok = t.call();
+
+            if (keys != null) {
+                for (Diagnostic<? extends JavaFileObject> d: dc.getDiagnostics()) {
+                    scanForKeys((JCDiagnostic) d, keys);
+                }
+            }
+
+            return ok;
+        }
+
+        /**
+         * Scan a diagnostic for resource keys.  This will not detect additional
+         * sub diagnostics that might be generated by a rich diagnostic formatter.
+         */
+        private static void scanForKeys(JCDiagnostic d, Set<String> keys) {
+            keys.add(d.getCode());
+            for (Object o: d.getArgs()) {
+                if (o instanceof JCDiagnostic) {
+                    scanForKeys((JCDiagnostic) o, keys);
+                }
+            }
+            for (JCDiagnostic sd: d.getSubdiagnostics())
+                scanForKeys(d, keys);
+        }
+    }
+
+    /**
+     * Run the test using the standard simple entry point.
+     */
+    static class SimpleCompiler extends Compiler {
+        SimpleCompiler(boolean verbose) {
+            super(verbose);
+        }
+
+        @Override
+        boolean run(PrintWriter out, Set<String> keys, boolean raw, List<String> opts, List<File> files) {
+            if (out != null && keys != null)
+                throw new IllegalArgumentException();
+
+            if (verbose)
+                System.err.println("run_simple: " + opts + " " + files);
+
+            List<String> args = new ArrayList<String>(opts);
+
+            if (keys != null || raw)
+                args.add("-XDrawDiagnostics");
+
+            args.addAll(opts);
+            for (File f: files)
+                args.add(f.getPath());
+
+            StringWriter sw = null;
+            PrintWriter pw;
+            if (keys != null) {
+                sw = new StringWriter();
+                pw = new PrintWriter(sw);
+            } else
+                pw = out;
+
+            int rc = com.sun.tools.javac.Main.compile(args.toArray(new String[args.size()]), pw);
+
+            if (keys != null) {
+                pw.close();
+                scanForKeys(sw.toString(), keys);
+            }
+
+            return (rc == 0);
+        }
+
+        private static void scanForKeys(String text, Set<String> keys) {
+            StringTokenizer st = new StringTokenizer(text, " ,\r\n():");
+            while (st.hasMoreElements()) {
+                String t = st.nextToken();
+                if (t.startsWith("compiler."))
+                    keys.add(t);
+            }
+        }
+    }
+
+    static class BackdoorCompiler extends Compiler {
+        BackdoorCompiler(boolean verbose) {
+            super(verbose);
+        }
+
+        @Override
+        boolean run(PrintWriter out, Set<String> keys, boolean raw, List<String> opts, List<File> files) {
+            if (out != null && keys != null)
+                throw new IllegalArgumentException();
+
+            if (verbose)
+                System.err.println("run_simple: " + opts + " " + files);
+
+            List<String> args = new ArrayList<String>(opts);
+
+            if (out != null && raw)
+                args.add("-XDrawDiagnostics");
+
+            args.addAll(opts);
+            for (File f: files)
+                args.add(f.getPath());
+
+            StringWriter sw = null;
+            PrintWriter pw;
+            if (keys != null) {
+                sw = new StringWriter();
+                pw = new PrintWriter(sw);
+            } else
+                pw = out;
+
+            Context c = new Context();
+            JavacFileManager.preRegister(c); // can't create it until Log has been set up
+            MessageTracker.preRegister(c, keys);
+            com.sun.tools.javac.main.Main m = new com.sun.tools.javac.main.Main("javac", pw);
+            int rc = m.compile(args.toArray(new String[args.size()]), c);
+
+            if (keys != null) {
+                pw.close();
+            }
+
+            return (rc == 0);
+        }
+
+        static class MessageTracker extends JavacMessages {
+            static void preRegister(Context c, final Set<String> keys) {
+                if (keys != null) {
+                    c.put(JavacMessages.messagesKey, new Context.Factory<JavacMessages>() {
+                        public JavacMessages make() {
+                            return new MessageTracker() {
+                                @Override
+                                public String getLocalizedString(Locale l, String key, Object... args) {
+                                    keys.add(key);
+                                    return super.getLocalizedString(l, key, args);
+                                }
+                            };
+                        }
+                    });
+                }
+            }
+        }
+
+    }
+}

test/tools/javac/diags/FileManager.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Reader;
+import java.io.Writer;
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.regex.Pattern;
+import javax.lang.model.element.Modifier;
+import javax.lang.model.element.NestingKind;
+import javax.tools.JavaFileManager.Location;
+import javax.tools.JavaFileObject;
+import javax.tools.StandardJavaFileManager;
+
+import com.sun.tools.javac.api.WrappingJavaFileManager;
+
+/**
+ * A JavaFileManager that can throw IOException on attempting to read or write
+ * selected files that match a regular expression.
+ */
+public class FileManager
+        extends WrappingJavaFileManager<StandardJavaFileManager>
+        implements StandardJavaFileManager {
+    private static final String CANT_READ = "cantRead:";
+    private static final String CANT_WRITE = "cantWrite:";
+
+    private Pattern cantRead;
+    private Pattern cantWrite;
+
+    public FileManager(StandardJavaFileManager fm, List<String> opts) {
+        super(fm);
+        for (String opt: opts) {
+            if (opt.startsWith(CANT_READ))
+                cantRead = Pattern.compile(opt.substring(CANT_READ.length()));
+            else if (opt.startsWith(CANT_WRITE))
+                cantWrite = Pattern.compile(opt.substring(CANT_WRITE.length()));
+            else
+                throw new IllegalArgumentException(opt);
+        }
+    }
+
+    @Override
+    protected JavaFileObject wrap(JavaFileObject fo) {
+        return new WrappedFileObject(fo);
+    }
+
+    @Override
+    protected JavaFileObject unwrap(JavaFileObject fo) {
+        if (fo instanceof WrappedFileObject)
+            return ((WrappedFileObject) fo).delegate;
+        else
+            return fo;
+    }
+
+    public Iterable<? extends JavaFileObject> getJavaFileObjectsFromFiles(Iterable<? extends File> files) {
+        return wrap2(fileManager.getJavaFileObjectsFromFiles(files));
+    }
+
+    public Iterable<? extends JavaFileObject> getJavaFileObjects(File... files) {
+        return wrap2(fileManager.getJavaFileObjects(files));
+    }
+
+    public Iterable<? extends JavaFileObject> getJavaFileObjectsFromStrings(Iterable<String> names) {
+        return wrap2(fileManager.getJavaFileObjectsFromStrings(names));
+    }
+
+    public Iterable<? extends JavaFileObject> getJavaFileObjects(String... names) {
+        return wrap2(fileManager.getJavaFileObjects(names));
+    }
+
+    /* This method is regrettably necessary because WrappingJavaFileManager.wrap takes
+     *          Iterable<JavaFileObject> fileObjects
+     * instead of
+     *          Iterable<? extends JavaFileObject> fileObjects
+     */
+    protected Iterable<JavaFileObject> wrap2(Iterable<? extends JavaFileObject> fileObjects) {
+        List<JavaFileObject> mapped = new ArrayList<JavaFileObject>();
+        for (JavaFileObject fileObject : fileObjects)
+            mapped.add(wrap(fileObject));
+        return Collections.unmodifiableList(mapped);
+    }
+
+    public void setLocation(Location location, Iterable<? extends File> path) throws IOException {
+        fileManager.setLocation(location, path);
+    }
+
+    public Iterable<? extends File> getLocation(Location location) {
+        return fileManager.getLocation(location);
+    }
+
+    class WrappedFileObject implements JavaFileObject {
+        WrappedFileObject(JavaFileObject fileObject) {
+            delegate = fileObject;
+        }
+
+        public Kind getKind() {
+            return delegate.getKind();
+        }
+
+        public boolean isNameCompatible(String simpleName, Kind kind) {
+            return delegate.isNameCompatible(simpleName, kind);
+        }
+
+        public NestingKind getNestingKind() {
+            return delegate.getNestingKind();
+        }
+
+        public Modifier getAccessLevel() {
+            return delegate.getAccessLevel();
+        }
+
+        public URI toUri() {
+            return delegate.toUri();
+        }
+
+        public String getName() {
+            return delegate.getName();
+        }
+
+        public InputStream openInputStream() throws IOException {
+            checkRead();
+            return delegate.openInputStream();
+        }
+
+        public OutputStream openOutputStream() throws IOException {
+            checkWrite();
+            return delegate.openOutputStream();
+        }
+
+        public Reader openReader(boolean ignoreEncodingErrors) throws IOException {
+            checkRead();
+            return delegate.openReader(ignoreEncodingErrors);
+        }
+
+        public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
+            checkRead();
+            return delegate.getCharContent(ignoreEncodingErrors);
+        }
+
+        public Writer openWriter() throws IOException {
+            checkWrite();
+            return delegate.openWriter();
+        }
+
+        public long getLastModified() {
+            return delegate.getLastModified();
+        }
+
+        public boolean delete() {
+            return delegate.delete();
+        }
+
+        void checkRead() throws IOException {
+            if (cantRead != null && cantRead.matcher(getName()).matches())
+                throw new IOException("FileManager: Can't read");
+        }
+
+        void checkWrite() throws IOException {
+            if (cantWrite != null && cantWrite.matcher(getName()).matches())
+                throw new IOException("FileManager: Can't write");
+        }
+
+        JavaFileObject delegate;
+    }
+}

test/tools/javac/diags/README.examples.txt

+Diagnostics Examples.
+
+The "examples/ directory contains a collection of examples of Java code, each of
+which is designed to illustrate one or more diagnostics that can be generated by
+the JDK Java compiler, javac. These examples are represented by files or
+directories of files, each of which is designed to illustrate a specific
+diagnostic. Sometimes it is unavoidable that creating one issue will lead to
+downstream issues: this is especially true for lex errors, where the error
+recovery is fragile at best. Each example declares the diagnostics that it is
+expected to generate -- this allows the examples to be verified and facilitates
+searching for examples for specific messages.
+
+Normally, tests for javac errors avoid checking the actual error messages that
+get generated. Older tests simply verify that one or more warnings or errors
+are generated; more recent tests verify that specific messages are generated,
+but these tests typically avoid checking the localized text by using the
+-XDrawDiagnostics mechanism. In addition, the focus of such tests is often on
+completeness instead of simplicity.
+
+By contrast, the intent of these examples is to provide simple and easy to
+understand examples of the situations in which a diagnostic can arise, and the
+messages that may be displayed. This will aid in reviewing the output generated
+by javac and in localizing the resource bundle to other locales. In addition,
+the examples include simple meta-information so that the collection as a whole
+can be audited for coverage, thus encouraging new examples to be added when new
+diagnostics are added to javac.
+
+There are two utilities for processing these examples.
+
+The first utility is "CheckExamples" which checks various conditions for the
+examples:
+-- each example must generate exactly the set of keys that it is declared to
+   generate
+-- together, the examples must generate all the resource keys coming from javac
+   (except for resource keys that are registered in a "not yet" list)
+-- the "not yet" list should only contain those resource keys from javac that
+   are not covered by any example
+
+CheckExamples can be run standalone, and as a jtreg test, and will fail if any
+anomalous conditions are found.
+
+The second utility is "RunExamples" which runs selected examples or all of them.
+The examples can be run with -XDrawDiagnostics or without.   Examples can be
+selected by name or by resource key.   Most examples are simple to run directly
+anyway, but some use annotation processors or sourcepath or other options, and
+the framework handles all these requirements.
+
+RunExamples can be run standalone and as a jtreg test, in which case it
+generates a simple plain text report. In addition, the langtools/make/build.xml
+file has a target "diags-examples" that uses RunExamples to create an HTML
+report containing the output from all the examples.
+
+
+Adding examples.
+
+When new diagnostics are added to javac, CheckExamples will probably initially
+fail because the diagnostic will not have a corresponding example, nor will the
+resource key be registered in the "not yet" list. Avoid the temptation to
+simply add the resource key to the "not yet" list, except as a last resort.
+
+Examples should be as simple as possible to illustrate a diagnostic.  An example
+that is a single file is to be preferred over multiple files. An example that
+generates just the one intended diagnostic is to be preferred over one that
+generates multiple diagnostics. Examples should be a simple illustration of the
+conditions that give rise to the diagnostic and should be easy to understand by
+the reviewer and, potentially, by the localization folk, who have to understand
+the context in which these new messages can appear.
+
+
+Specification for writing examples.
+
+An example may a single file or a directory of files directly in the "examples"
+directory. One file within an example must contain meta-information such as the
+keys that it generates, any javac options that may be required, and additional
+info about how to run the test, if needed.
+
+If an example is represented by a directory of files, by default all files
+within that directory will be compiled together, putting all the files on the
+command line. However, some subdirectories are special:
+-- processors/
+    Files within this directory will be treated as annotation processors and
+    compiled ahead of time. Currently, annotation processors are made available
+    to javac using the -classpath option (not -processorpath). This is to avoid
+    explicit use of annotation processing options on the javac command line.
+    Any annotation processors found will be registered for access by the JDK
+    service loaded. Currently, annotation processors are assumed to be in the
+    unnamed package.
+-- sourcepath/
+    If present, this directory will be put passed to javac using the -sourcepath
+    option.
+-- classpath/
+    This name is reserved for future use. It is expected that this directory
+    will be used to provide classes to be compiled and passes to javac via the
+    -classpath option.
+-- support/
+    This name is reserved for future use. It is expected that this directory
+    will be used to provide classes that setup non-standard conditions for a
+    test, such as very large source files, or illegal class files.
+
+Meta-information is represented by simple comment lines in exactly one of the
+source files of the example.  The file must not be in one of the special
+subdirectories (processors/, sourcepath/, classpath/ or support/). Three
+different types of information may be given:
+// key: <resource-key>
+    One or more such lines must be provided, declaring the full resource keys
+    that will be used by javac when this example is run.
+// options: <javac-options>
+    This line may be given at most once, providing one or more options to be
+    passed to javac. It is not possible to use this to specify options that
+    require filenames or directories.
+// run: <mode> <optional-args>
+    This line may be given at most once, providing infomation about how to
+    run the example. Three different kinds are supported:
+    jsr199 -- The example will be run using the JSR 199 Compiler API.
+              This is the default if the tag is omitted. Messages generated
+              by the "rich diagnostic formatter" can not be accessed in this
+              way.  However, this mode does provide additional options for
+              simulating errors in the filesystem. (See the options below.)
+    simple -- The example will be run using the simple com.sun.tools.javac.Main
+              API. This mode is most like the normal command line invocation.
+    backdoor -- The example will be run using an internal "backdoor" API, that
+              interposes access to the main compiler message bundle. This mode
+              is required to detect and track messages that bypass the normal
+              diagnostic mechanisms, such as output generated by the -verbose
+              option.
+
+The "jsr199" run mode accepts the following options:
+    -cantRead:pattern
+    -cantWrite:pattern
+In both cases, the pattern is a standard Java regular expression (See the
+javadoc for java.util.regex.Pattern for a complete specification.) Attempts to
+read or write from files matching the corresponding pattern will cause an
+IOException to occur within javac.
+

test/tools/javac/diags/examples.not-yet.txt

+compiler.err.already.annotated                          # internal compiler error?
+compiler.err.already.defined.this.unit                  # seems to be masked by compiler.err.duplicate.class
+compiler.err.annotation.value.not.allowable.type        # cannot happen: precluded by complete type-specific tests
+compiler.err.assignment.from.super-bound                # DEAD
+compiler.err.assignment.to.extends-bound                # DEAD
+compiler.err.cant.apply.symbol.1
+compiler.err.cant.read.file                             # (apt.JavaCompiler?)
+compiler.err.cant.select.static.class.from.param.type
+compiler.err.illegal.char.for.encoding
+compiler.err.internal.error.cant.instantiate            # Attr: should not happen
+compiler.err.io.exception                               # (javah.JavahTask?)
+compiler.err.limit.code                                 # Code
+compiler.err.limit.code.too.large.for.try.stmt          # Gen
+compiler.err.limit.dimensions                           # Gen
+compiler.err.limit.locals                               # Code
+compiler.err.limit.parameters                           # Gen
+compiler.err.limit.pool                                 # Gen,JavaCompiler
+compiler.err.limit.pool.in.class                        # UNUSED?
+compiler.err.limit.stack                                # Code
+compiler.err.limit.string                               # Gen
+compiler.err.limit.string.overflow                      # JavaCompiler
+compiler.err.name.reserved.for.internal.use             # UNUSED
+compiler.err.no.annotation.member
+compiler.err.no.encl.instance.of.type.in.scope          # cannot occur; always followed by assert false;
+compiler.err.no.match.entry                             # UNUSED?
+compiler.err.not.annotation.type                        # cannot occur given preceding checkType
+compiler.err.not.within.bounds.explain                  # UNUSED?
+compiler.err.prob.found.req.1                           # Check: DEAD, in unused method
+compiler.err.proc.bad.config.file                       # JavacProcessingEnvironment
+compiler.err.proc.cant.access                           # completion failure
+compiler.err.proc.cant.create.loader                    # security exception from service loader
+compiler.err.proc.no.service                            # JavacProcessingEnvironment: no service loader available
+compiler.err.proc.processor.bad.option.name             # cannot happen? masked by javac.err.invalid.A.key
+compiler.err.proc.processor.constructor.error
+compiler.err.proc.service.problem                       # JavacProcessingEnvironment: catch Throwable from service loader
+compiler.err.signature.doesnt.match.intf                # UNUSED
+compiler.err.signature.doesnt.match.supertype           # UNUSED
+compiler.err.source.cant.overwrite.input.file
+compiler.err.stack.sim.error
+compiler.err.type.var.more.than.once                    # UNUSED
+compiler.err.type.var.more.than.once.in.result          # UNUSED
+compiler.err.undetermined.type
+compiler.err.unexpected.type
+compiler.err.unknown.enum.constant                      # in bad class file
+compiler.err.unsupported.cross.fp.lit                   # Scanner: host system dependent
+compiler.misc.arg.length.mismatch
+compiler.misc.assignment.from.super-bound
+compiler.misc.assignment.to.extends-bound
+compiler.misc.bad.class.file.header                     # bad class file
+compiler.misc.bad.class.signature                       # bad class file
+compiler.misc.bad.const.pool.tag                        # bad class file
+compiler.misc.bad.const.pool.tag.at                     # bad class file
+compiler.misc.bad.enclosing.method                      # bad class file
+compiler.misc.bad.runtime.invisible.param.annotations   # bad class file
+compiler.misc.bad.signature                             # bad class file
+compiler.misc.bad.type.annotation.value
+compiler.misc.base.membership                           # UNUSED
+compiler.misc.ccf.found.later.version
+compiler.misc.ccf.unrecognized.attribute
+compiler.misc.class.file.not.found                      # ClassReader
+compiler.misc.class.file.wrong.class
+compiler.misc.fatal.err.cant.locate.ctor                # Resolve, from Lower
+compiler.misc.fatal.err.cant.locate.field               # Resolve, from Lower
+compiler.misc.fatal.err.cant.locate.meth                # Resolve, from Lower
+compiler.misc.file.does.not.contain.package
+compiler.misc.illegal.start.of.class.file
+compiler.misc.kindname.annotation
+compiler.misc.kindname.enum
+compiler.misc.kindname.package
+compiler.misc.kindname.static
+compiler.misc.kindname.type.variable
+compiler.misc.kindname.type.variable.bound
+compiler.misc.kindname.value
+compiler.misc.no.conforming.assignment.exists
+compiler.misc.non.denotable.type
+compiler.misc.no.unique.minimal.instance.exists
+compiler.misc.resume.abort                              # prompt for a response
+compiler.misc.source.unavailable                        # DiagnosticSource
+compiler.misc.token.bad-symbol
+compiler.misc.token.character
+compiler.misc.token.double
+compiler.misc.token.end-of-input
+compiler.misc.token.float
+compiler.misc.token.integer
+compiler.misc.token.long-integer
+compiler.misc.token.string
+compiler.misc.type.captureof
+compiler.misc.type.captureof.1
+compiler.misc.type.none
+compiler.misc.type.req.exact
+compiler.misc.type.variable.has.undetermined.type
+compiler.misc.unable.to.access.file                     # ClassFile
+compiler.misc.undecl.type.var                           # ClassReader
+compiler.misc.undetermined.type
+compiler.misc.unicode.str.not.supported                 # ClassReader
+compiler.misc.verbose.retro                             # UNUSED
+compiler.misc.verbose.retro.with                        # UNUSED
+compiler.misc.verbose.retro.with.list                   # UNUSED
+compiler.misc.version.not.available                     # JavaCompiler; implies build error
+compiler.misc.where.description.captured
+compiler.misc.where.description.intersection.1
+compiler.misc.where.typevar.1
+compiler.misc.wrong.version                             # ClassReader
+compiler.warn.annotation.method.not.found               # ClassReader
+compiler.warn.annotation.method.not.found.reason        # ClassReader
+compiler.warn.big.major.version                         # ClassReader
+compiler.warn.illegal.char.for.encoding
+compiler.warn.invalid.archive.file
+compiler.warn.override.bridge
+compiler.warn.position.overflow                         # CRTable: caused by files with long lines >= 1024 chars
+compiler.warn.proc.file.create.last.round               # See CR 6966604
+compiler.warn.proc.type.already.exists                  # JavacFiler: just mentioned in TODO
+compiler.warn.unchecked.assign                          # DEAD, replaced by compiler.misc.unchecked.assign
+compiler.warn.unchecked.cast.to.type                    # DEAD, replaced by compiler.misc.unchecked.cast.to.type
+compiler.warn.unexpected.archive.file                   # Paths: zip file with unknown extn

test/tools/javac/diags/examples/AbstractCantBeAccessed.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.abstract.cant.be.accessed.directly
+
+abstract class Base {
+    abstract void m();
+}
+
+class AbstractCantBeAccessed extends Base {
+    void m() {
+        super.m();
+    }
+}

test/tools/javac/diags/examples/AbstractCantBeInstantiated.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.abstract.cant.be.instantiated
+
+class AbstractCantBeInstantiated {
+    abstract class C { }
+
+    void m() {
+        new C();
+    }
+}

test/tools/javac/diags/examples/AbstractMethodCantHaveBody.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.abstract.meth.cant.have.body
+
+abstract class AbstractMethodCantHaveBody {
+    abstract void m() { }
+}

test/tools/javac/diags/examples/AlreadyDefined.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.already.defined
+
+class X {
+    int i;
+    int i;
+}

test/tools/javac/diags/examples/AlreadyDefinedImport.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.already.defined.single.import
+
+import java.awt.List;
+import java.util.List;
+
+class AlreadyDefinedImport { }

test/tools/javac/diags/examples/AlreadyDefinedStaticImport/AlreadDefinedStaticImport.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.already.defined.static.single.import
+
+import static p.E1.A;
+import static p.E2.A;

test/tools/javac/diags/examples/AlreadyDefinedStaticImport/p/E1.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package p;
+
+public enum E1 { A, B, C}

test/tools/javac/diags/examples/AlreadyDefinedStaticImport/p/E2.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package p;
+
+public enum E2 { A, B, C }

test/tools/javac/diags/examples/AnnoNotApplicable.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.annotation.type.not.applicable
+
+import java.lang.annotation.*;
+
+@Target(ElementType.METHOD)
+@interface Anno { }
+
+
+@Anno()
+class AnnoNotApplicable { }

test/tools/javac/diags/examples/AnnoNotValidForType.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.annotation.not.valid.for.type
+
+@interface Anno {
+    int value();
+}
+
+@Anno(@Deprecated)
+class AnnoNotValueForType { }

test/tools/javac/diags/examples/AnnoValueMustBeAnnotation.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.annotation.value.must.be.annotation
+
+@interface Anno1 {
+    String value();
+}
+
+@interface Anno2 {
+    Anno1 value();
+}
+
+@Anno2("3")
+class AnnoValueMustBeAnnotation { }

test/tools/javac/diags/examples/AnnoValueMustBeClassLiteral.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.annotation.value.must.be.class.literal
+
+@interface Anno {
+    Class value();
+}
+
+@Anno(Class.forName("java.lang.Object"))
+class AnnoValueMustBeClassLiteral { }

test/tools/javac/diags/examples/AnnosWithoutProcessors/AnnosWithoutProcessors.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.warn.proc.annotations.without.processors
+// options: -Xlint:processing -processor AnnoProc -proc:only
+
+@interface Anno { }
+
+@Anno
+class AnnosWithoutProcessors { }

test/tools/javac/diags/examples/AnnosWithoutProcessors/processors/AnnoProc.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.util.*;
+import javax.annotation.processing.*;
+import javax.lang.model.*;
+import javax.lang.model.element.*;
+
+@SupportedAnnotationTypes("NotAnno")
+public class AnnoProc extends AbstractProcessor {
+    public boolean process(Set<? extends TypeElement> elems, RoundEnvironment renv) {
+        return true;
+    }
+
+    public SourceVersion getSupportedSourceVersion() {
+        return SourceVersion.latest();
+    }
+}

test/tools/javac/diags/examples/AnnotationMissingValue.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.annotation.missing.default.value
+
+@interface Anno {
+    String value();
+}
+
+@Anno
+class AnnotationMissingValue { }

test/tools/javac/diags/examples/AnnotationMustBeNameValue.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.annotation.value.must.be.name.value
+
+@interface Anno {
+    String name() default "anon";
+    String address() default "here";
+}
+
+@Anno(name == "fred", address = "there")
+class X { }

test/tools/javac/diags/examples/AnnotationsNotSupported.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.annotations.not.supported.in.source
+// options: -source 1.4
+
+@Deprecated
+class AnnotationsNotSupported { }

test/tools/javac/diags/examples/AnonClassImplInterfaceNoArgs.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.anon.class.impl.intf.no.args
+
+class AnonClassInterfaceNoArgs {
+    Runnable r = new Runnable(3) {
+        public void run() { }
+    };
+}

test/tools/javac/diags/examples/AnonClassImplInterfaceNoQualForNew.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.anon.class.impl.intf.no.qual.for.new
+
+class AnonClassImplInterfaceNoQualForNew {
+    interface Intf {}
+    AnonClassImplInterfaceNoQualForNew x;
+
+    Object o = x.new Intf() { };
+}

test/tools/javac/diags/examples/AnonClassImplInterfaceNoTypeArgs.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.anon.class.impl.intf.no.typeargs
+
+class AnonClassInterfaceNoArgs {
+    Runnable r = new<Integer> Runnable() {
+        public void run() { }
+    };
+}

test/tools/javac/diags/examples/AnonymousClass.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.misc.anonymous.class
+// key: compiler.warn.missing.SVUID
+// options: -Xlint:serial
+// run: simple
+
+class AnonymousClass {
+    Exception m() {
+        return new Exception() { };
+    }
+}

test/tools/javac/diags/examples/ArrayAndVarargs.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.array.and.varargs
+
+class ArrayAndVarags {
+    void m(int[] array) { }
+    void m(int... args) { }
+}

test/tools/javac/diags/examples/ArrayDimMissing.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.array.dimension.missing
+
+class ArrayDimMissing {
+    int[] array = new int[];
+}

test/tools/javac/diags/examples/ArrayRequired.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.array.req.but.found
+
+class X {
+    int i;
+    int j = i[0];
+}

test/tools/javac/diags/examples/AssertAsIdentifier.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.warn.assert.as.identifier
+// options: -source 1.3
+
+class AssertAsIdentifier {
+    int assert;
+}

test/tools/javac/diags/examples/AssertAsIdentifier2.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.assert.as.identifier
+
+class AssertAsIdentifier {
+    int assert;
+}

test/tools/javac/diags/examples/AttrMustBeConstant.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.attribute.value.must.be.constant
+
+@interface Anno {
+    String value();
+}
+
+@Anno(System.getProperty("user.dir"))
+class AttrMustBeConstant { }

test/tools/javac/diags/examples/BadSourceFileHeader/BadSourceFileHeader.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.misc.bad.source.file.header
+// key: compiler.misc.file.doesnt.contain.class
+// key: compiler.err.cant.access
+
+class BadSourceFileHeader {
+    p.A a;
+}

test/tools/javac/diags/examples/BadSourceFileHeader/sourcepath/p/A.java

+/*
+ * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package q;
+
+class A { }

test/tools/javac/diags/examples/BreakOutsideSwitchLoop.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.break.outside.switch.loop
+
+class BreakOutsideSwitchLoop {
+    void m() {
+        break;
+    }
+}

test/tools/javac/diags/examples/CallMustBeFirst.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.call.must.be.first.stmt.in.ctor
+
+class CallMustBeFirst {
+    CallMustBeFirst() {
+        int i = 0;
+        super();
+    }
+}

test/tools/javac/diags/examples/CannotCreateArrayWithTypeArgs.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cannot.create.array.with.type.arguments
+
+class X {
+    Object[] array = new<Integer> Object[3];
+}

test/tools/javac/diags/examples/CantApplyDiamond.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cant.apply.diamond
+// key: compiler.misc.diamond
+
+class CantApplyDiamond<T extends Number> {
+    CantApplyDiamond(T t) { }
+    <U> CantApplyDiamond(T t, U u) { }
+
+    void m() {
+        CantApplyDiamond<?> x = new CantApplyDiamond<>("");
+    }
+}

test/tools/javac/diags/examples/CantAssignToFinal.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cant.assign.val.to.final.var
+
+class CantAssignToFinal {
+    final int i = 0;
+
+    void m() {
+        i = 3;
+    }
+}

test/tools/javac/diags/examples/CantDeref.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cant.deref
+
+class X {
+    int m(int i) {
+        return i.x;
+    }
+}

test/tools/javac/diags/examples/CantExtendIntfAnno.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cant.extend.intf.annotation
+
+@interface Anno { }
+
+@interface CantExtendIntfAnno extends Anno { }

test/tools/javac/diags/examples/CantImplement.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.misc.cant.implement
+// key: compiler.err.override.weaker.access
+
+interface Interface {
+    void m();
+}
+
+class CantImplement implements Interface {
+    void m() { }
+}

test/tools/javac/diags/examples/CantInheritDiffArg.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cant.inherit.diff.arg
+
+import java.util.*;
+
+class CantInheritDiffArg extends ArrayList<String> implements List<Integer> { }

test/tools/javac/diags/examples/CantRefBeforeConstr.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cant.ref.before.ctor.called
+
+class Base {
+    Base(int i) { }
+}
+
+class CantRefBeforeConstr extends Base {
+    int i;
+
+    CantRefBeforeConstr() {
+        super(i);
+    }
+}

test/tools/javac/diags/examples/CantResolve.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cant.resolve
+
+class CantResolve<T extends Object & java.io.Serializable> {
+    T t;
+    void m() {
+        Object o = t.v;
+    }
+}

test/tools/javac/diags/examples/CantResolveArgs.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cant.resolve.args
+
+import java.util.*;
+
+class CantResolveArgs {
+    void m() {
+        new Runnable() {
+            { unknown(); }
+            public void run() { }
+        };
+    }
+}

test/tools/javac/diags/examples/CantResolveArgsParams.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cant.resolve.args.params
+
+class CantResolveArgsParams<T extends Object & java.io.Serializable> {
+    T t;
+    void m() {
+        t.<Integer,Double>m2(1, "");
+    }
+}

test/tools/javac/diags/examples/CantResolveLocation.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cant.resolve.location
+
+class CantResolveLocation {
+    Unknown y;
+}

test/tools/javac/diags/examples/CantResolveLocationArgs.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cant.resolve.location.args
+
+class X {
+    void m() {
+        unknown(1);
+    }
+}

test/tools/javac/diags/examples/CantResolveLocationArgsParams.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cant.resolve.location.args.params
+
+import java.util.*;
+
+class X {
+    void m() {
+        Object o = List.<String>unknown();
+    }
+}

test/tools/javac/diags/examples/CantReturnValueForVoid.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cant.ret.val.from.meth.decl.void
+
+class CantReturnValueForVoid {
+    void m() {
+        return 3;
+    }
+}

test/tools/javac/diags/examples/CatchWithoutTry.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.catch.without.try
+// key: compiler.err.expected
+// key: compiler.err.not.stmt
+
+class CatchWithoutTry {
+    void m() {
+        catch (Exception e) {
+        }
+    }
+}

test/tools/javac/diags/examples/ClashesWith.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.misc.clashes.with
+// key: compiler.err.override.incompatible.ret
+
+interface Base {
+    int m();
+}
+
+interface ClashesWith extends Base {
+    String m();
+}

test/tools/javac/diags/examples/ClassCantWrite.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.class.cant.write
+// run: jsr199 -filemanager cantWrite:.*/ClassCantWrite.class
+
+class ClassCantWrite { }

test/tools/javac/diags/examples/ClassPublicInFile.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.class.public.should.be.in.file
+
+public class C { }

test/tools/javac/diags/examples/ConcreteInheritanceConflict.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.concrete.inheritance.conflict
+
+class Base<T> {
+    void m(T t) {  }
+    void m(String s) { }
+}
+
+class ConcreteInheritanceConflict extends Base<String> { }

test/tools/javac/diags/examples/ConstExprRequired.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.const.expr.req
+
+class ConstExprRequired {
+    int i = 3;
+
+    String m(int arg) {
+        switch (arg) {
+            case 0: return "zero";
+            case 1: return "one";
+            case i: return "i";
+        }
+    }
+}

test/tools/javac/diags/examples/ConstantSVUID.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.warn.constant.SVUID
+// options: -Xlint:serial
+
+import java.io.Serializable;
+
+class ConstantSVUID implements Serializable {
+    private static final long serialVersionUID = Integer.parseInt("0");
+}

test/tools/javac/diags/examples/ContinueOutsideLoop.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cont.outside.loop
+
+class ContinueOutsideLoop {
+    void m() {
+        continue;
+    }
+}

test/tools/javac/diags/examples/CountError.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.misc.count.error
+// key: compiler.err.unreported.exception.need.to.catch.or.throw
+// run: backdoor
+
+class CountError {
+    void m() { throw new Exception(); }
+}

test/tools/javac/diags/examples/CountErrorPlural.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.misc.count.error.plural
+// key: compiler.err.unreported.exception.need.to.catch.or.throw
+// run: backdoor
+
+class CountErrorPlural {
+    void m1() { throw new Exception(); }
+    void m2() { throw new Exception(); }
+}

test/tools/javac/diags/examples/CountWarn.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.misc.count.warn
+// key: compiler.warn.warning
+// key: compiler.warn.prob.found.req
+// key: compiler.misc.unchecked.assign
+// options: -Xlint:unchecked
+// run: backdoor
+
+import java.util.*;
+
+class CountWarn {
+    List<String> list = new ArrayList();
+}

test/tools/javac/diags/examples/CountWarnPlural.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.misc.count.warn.plural
+// key: compiler.warn.warning
+// key: compiler.warn.prob.found.req
+// key: compiler.misc.unchecked.assign
+// options: -Xlint:unchecked
+// run: backdoor
+
+import java.util.*;
+
+class CountWarn {
+    List<String> list1 = new ArrayList();
+    List<String> list2 = new ArrayList();
+}

test/tools/javac/diags/examples/CyclicAnnoElement.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cyclic.annotation.element
+
+@interface X {
+    X value();
+}

test/tools/javac/diags/examples/CyclicInheritance.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.cyclic.inheritance
+
+class CyclicInheritance extends CyclicInheritance { }

test/tools/javac/diags/examples/DefaultAllowedInIntfAnnotationMember.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.default.allowed.in.intf.annotation.member
+
+interface DefaultAllowedInIntfAnnotationMember {
+    String value() default "";
+}

test/tools/javac/diags/examples/DeprecatedFilename.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.note.deprecated.filename
+// key: compiler.note.deprecated.recompile
+
+class DeprecatedFilename {
+    DeprecatedClass d;
+}
+
+@Deprecated
+class DeprecatedClass { }

test/tools/javac/diags/examples/DeprecatedFilenameAdditional.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.note.deprecated.filename.additional
+// key: compiler.warn.has.been.deprecated
+// options: -Xlint:deprecation -Xmaxwarns 1
+
+class DeprecatedFilename {
+    DeprecatedClass d;
+}
+
+class DeprecatedFilenameAdditional {
+    DeprecatedClass d;
+}
+
+@Deprecated
+class DeprecatedClass { }

test/tools/javac/diags/examples/DeprecatedPlural/DeprecatedClass.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+@Deprecated
+class DeprecatedClass { }

test/tools/javac/diags/examples/DeprecatedPlural/DeprecatedFilename.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+class DeprecatedFileName {
+    DeprecatedClass d;
+}

test/tools/javac/diags/examples/DeprecatedPlural/DeprecatedPlural.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.note.deprecated.plural
+// key: compiler.note.deprecated.recompile
+
+class DeprecatedPlural {
+    DeprecatedClass d;
+}

test/tools/javac/diags/examples/DeprecatedPluralAdditional/DeprecatedClass.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+@Deprecated
+class DeprecatedClass { }

test/tools/javac/diags/examples/DeprecatedPluralAdditional/DeprecatedFilename.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+class DeprecatedFileName {
+    DeprecatedClass d;
+}

test/tools/javac/diags/examples/DeprecatedPluralAdditional/DeprecatedPlural.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+class DeprecatedPlural {
+    DeprecatedClass d;
+}

test/tools/javac/diags/examples/DeprecatedPluralAdditional/DeprecatedPluralAdditional.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.note.deprecated.plural.additional
+// key: compiler.warn.has.been.deprecated
+// options: -Xlint:deprecation -Xmaxwarns 1
+
+class DeprecatedPluralAdditional {
+    DeprecatedClass d;
+}

test/tools/javac/diags/examples/DiamondInvalidArg.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.misc.diamond.invalid.arg
+// key: compiler.misc.diamond
+// key: compiler.err.cant.apply.diamond.1
+
+class DiamondInvalidArg {
+    static class Foo<X extends Number & Comparable<Number>> { }
+    Foo<?> foo = new Foo<>();
+}

test/tools/javac/diags/examples/DiamondInvalidArgs.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.misc.diamond.invalid.args
+// key: compiler.misc.diamond
+// key: compiler.err.cant.apply.diamond.1
+
+class DiamondInvalidArgs {
+    static class Foo<X extends Number & Comparable<Number>,
+                           Y extends Number & Comparable<Number>> { }
+    Foo<?,?> foo = new Foo<>();
+}

test/tools/javac/diags/examples/DiamondNotSupported.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.diamond.not.supported.in.source
+// options: -source 6
+
+import java.util.*;
+
+class DiamondNotSupported {
+    void m() {
+        List<String> list = new ArrayList<>();
+    }
+}

test/tools/javac/diags/examples/DirPathElementNotFound.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.warn.dir.path.element.not.found
+// options: -Xlint:path -extdirs DoesNotExist
+// run: simple
+
+class DirPathElementNotFound { }

test/tools/javac/diags/examples/DivZero.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.warn.div.zero
+// options: -Xlint:divzero
+
+class DivZero {
+    int m(int a) {
+        return a / 0 ;
+    }
+}

test/tools/javac/diags/examples/DoesNotOverride.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.does.not.override.abstract
+
+abstract class Base {
+    abstract void m();
+}
+
+class DoesNotOverride extends Base { }

test/tools/javac/diags/examples/DoesntExist.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.doesnt.exist
+
+import DoesntExist.*;

test/tools/javac/diags/examples/DotClassExpected.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.dot.class.expected
+
+class DotClassExpected {
+    int f = int[] + 3;
+}

test/tools/javac/diags/examples/DuplicateAnnotation.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.duplicate.annotation
+
+@interface Anno { }
+
+@Anno
+@Anno
+class DuplicateAnnotation { }

test/tools/javac/diags/examples/DuplicateAnnotationMemberValue.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.duplicate.annotation.member.value
+
+@interface Anno {
+    int value();
+}
+
+@Anno(value=1, value=2)
+class DuplicateAnnotationMemberValue { }

test/tools/javac/diags/examples/DuplicateCaseLabel.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.duplicate.case.label
+
+class DuplicateCaseLabel {
+    String m(int arg) {
+        switch (arg) {
+            case 0: return "zero";
+            case 1: return "one";
+            case 1: return "one";
+        }
+    }
+}

test/tools/javac/diags/examples/DuplicateClass.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.duplicate.class
+
+class DuplicateClass { }
+
+class DuplicateClass { }

test/tools/javac/diags/examples/DuplicateDefaultLabel.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.duplicate.default.label
+
+class DuplicateCaseLabel {
+    String m(int arg) {
+        switch (arg) {
+            case 0:  return "zero";
+            case 1:  return "one";
+            default: return "??";
+            default: return "??";
+        }
+    }
+}

test/tools/javac/diags/examples/ElseWithoutIf.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.else.without.if
+
+class ElseWithoutIf {
+    void m() {
+        else {
+        }
+    }
+}

test/tools/javac/diags/examples/EmptyBytecodeIdent.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.empty.bytecode.ident
+
+class EmptyBytecodeIdent {
+    int #"" = 3;
+}

test/tools/javac/diags/examples/EmptyCharLiteral.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+// key: compiler.err.empty.char.lit
+// key: compiler.err.unclosed.char.lit
+// key: compiler.err.expected
+// key: compiler.err.premature.eof
+
+class X {
+    char c = '';
+}