8182601: Improve usage messages

Reviewed-by: alanb, ahgross, ksrini, mchung, dfuchs

src/share/classes/java/util/ResourceBundle.java

 /*
- * Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2017, 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
@@ -485,7 +485,7 @@ public abstract class ResourceBundle {
     }
 
     /**
-     * A wrapper of ClassLoader.getSystemClassLoader().
+     * A wrapper of Extension Class Loader
      */
     private static class RBClassLoader extends ClassLoader {
         private static final RBClassLoader INSTANCE = AccessController.doPrivileged(
@@ -494,7 +494,16 @@ public abstract class ResourceBundle {
                             return new RBClassLoader();
                         }
                     });
-        private static final ClassLoader loader = ClassLoader.getSystemClassLoader();
+        private static final ClassLoader loader;
+        static {
+            // Find the extension class loader.
+            ClassLoader ld = ClassLoader.getSystemClassLoader();
+            ClassLoader parent;
+            while ((parent = ld.getParent()) != null) {
+                ld = parent;
+            }
+            loader = ld;
+        }
 
         private RBClassLoader() {
         }

src/share/classes/java/util/logging/Level.java

 /*
- * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2017, 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
@@ -262,11 +262,17 @@ public class Level implements java.io.Serializable {
     }
 
     private String computeLocalizedLevelName(Locale newLocale) {
-        ResourceBundle rb = ResourceBundle.getBundle(resourceBundleName, newLocale);
-        final String localizedName = rb.getString(name);
+        // If this is a custom Level, load resource bundles on the
+        // classpath and return.
+        if (!defaultBundle.equals(resourceBundleName)) {
+            return ResourceBundle.getBundle(resourceBundleName, newLocale,
+                       ClassLoader.getSystemClassLoader()).getString(name);
+        }
 
-        final boolean isDefaultBundle = defaultBundle.equals(resourceBundleName);
-        if (!isDefaultBundle) return localizedName;
+        // The default bundle "sun.util.logging.resources.logging" should only
+        // be loaded from the runtime; so use the extension class loader;
+        final ResourceBundle rb = ResourceBundle.getBundle(defaultBundle, newLocale);
+        final String localizedName = rb.getString(name);
 
         // This is a trick to determine whether the name has been translated
         // or not. If it has not been translated, we need to use Locale.ROOT

src/share/classes/java/util/logging/Logger.java

 /*
- * Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2017, 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
@@ -1817,8 +1817,7 @@ public class Logger {
             public ResourceBundle run() {
                 try {
                     return ResourceBundle.getBundle(SYSTEM_LOGGER_RB_NAME,
-                                                    locale,
-                                                    ClassLoader.getSystemClassLoader());
+                                                    locale);
                 } catch (MissingResourceException e) {
                     throw new InternalError(e.toString());
                 }

src/share/classes/javax/swing/UIDefaults.java

 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2017, 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
@@ -305,7 +305,8 @@ public class UIDefaults extends Hashtable<Object,Object>
                     if (c != null) {
                         b = ResourceBundle.getBundle(bundleName, l, c);
                     } else {
-                        b = ResourceBundle.getBundle(bundleName, l);
+                        b = ResourceBundle.getBundle(bundleName, l,
+                                ClassLoader.getSystemClassLoader());
                     }
                     Enumeration keys = b.getKeys();