8014017: extra space in javadoc class heading

Reviewed-by: jjg

src/share/classes/com/sun/tools/doclets/internal/toolkit/builders/ClassBuilder.java

@@ -289,7 +289,8 @@ public class ClassBuilder extends AbstractBuilder {
      * @param classInfoTree the content tree to which the documentation will be added
      */
     public void buildClassSignature(XMLNode node, Content classInfoTree) {
-        StringBuilder modifiers = new StringBuilder(classDoc.modifiers() + " ");
+        StringBuilder modifiers = new StringBuilder(classDoc.modifiers());
+        modifiers.append(modifiers.length() == 0 ? "" : " ");
         if (isEnum) {
             modifiers.append("enum ");
             int index;

test/com/sun/javadoc/testPrivateClasses/TestPrivateClasses.java

 /*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2013, 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
@@ -23,7 +23,7 @@
 
 /*
  * @test
- * @bug      4780441 4874845 4978816
+ * @bug      4780441 4874845 4978816 8014017
  * @summary  Make sure that when the -private flag is not used, members
  *           inherited from package private class are documented in the child.
  *
@@ -33,17 +33,19 @@
  *
  *           Make sure that when a private interface method with generic parameters
  *           is implemented, the comments can be inherited properly.
+ *
+ *           Make sure when no modifier appear in the class signature, the
+ *           signature is displayed correctly without extra space at the beginning.
  * @author   jamieh
  * @library  ../lib/
- * @build    JavadocTester
- * @build    TestPrivateClasses
+ * @build    JavadocTester TestPrivateClasses
  * @run main TestPrivateClasses
  */
 
 public class TestPrivateClasses extends JavadocTester {
 
     //Test information.
-    private static final String BUG_ID = "4780441-4874845-4978816";
+    private static final String BUG_ID = "4780441-4874845-4978816-8014017";
 
     //Javadoc arguments.
     private static final String[] ARGS1 = new String[] {
@@ -234,8 +236,19 @@ public class TestPrivateClasses extends JavadocTester {
             "&nbsp;in interface&nbsp;<code>" +
             "<a href=\"../pkg2/I.html\" title=\"interface in pkg2\">I</a>" +
             "&lt;java.lang.String&gt;</code></dd>"},
+
+      //Make sure when no modifier appear in the class signature, the
+      //signature is displayed correctly without extra space at the beginning.
+      {BUG_ID + "-2" + FS + "pkg" + FS + "PrivateParent.html",
+            "<pre>class <span class=\"strong\">PrivateParent</span>"},
+
+      {BUG_ID + "-2" + FS + "pkg" + FS + "PublicChild.html",
+            "<pre>public class <span class=\"strong\">PublicChild</span>"},
+    };
+    private static final String[][] NEGATED_TEST2 = {
+        {BUG_ID + "-2" + FS + "pkg" + FS + "PrivateParent.html",
+            "<pre> class <span class=\"strong\">PrivateParent</span>"},
     };
-    private static final String[][] NEGATED_TEST2 = NO_TEST;
 
     /**
      * The entry point of the test.

test/com/sun/javadoc/testTypeAnnotations/TestTypeAnnotations.java

@@ -78,7 +78,7 @@ public class TestTypeAnnotations extends JavadocTester {
             "typeannos\">@ClassParamA</a> java.lang.String&gt;</span>"
         },
         {BUG_ID + FS + "typeannos" + FS + "ExtendsGeneric.html",
-            "<pre> class <span class=\"strong\">ExtendsGeneric&lt;K extends " +
+            "<pre>class <span class=\"strong\">ExtendsGeneric&lt;K extends " +
             "<a href=\"../typeannos/ClassParamA.html\" title=\"annotation in " +
             "typeannos\">@ClassParamA</a> <a href=\"../typeannos/Unannotated.html\" " +
             "title=\"class in typeannos\">Unannotated</a>&lt;<a href=\"" +
@@ -86,7 +86,7 @@ public class TestTypeAnnotations extends JavadocTester {
             "@ClassParamB</a> java.lang.String&gt;&gt;</span>"
         },
         {BUG_ID + FS + "typeannos" + FS + "TwoBounds.html",
-            "<pre> class <span class=\"strong\">TwoBounds&lt;K extends <a href=\"" +
+            "<pre>class <span class=\"strong\">TwoBounds&lt;K extends <a href=\"" +
             "../typeannos/ClassParamA.html\" title=\"annotation in typeannos\">" +
             "@ClassParamA</a> java.lang.String,V extends <a href=\"../typeannos/" +
             "ClassParamB.html\" title=\"annotation in typeannos\">@ClassParamB" +