updated javadoc comments.

git-svn-id: http://anonsvn.jboss.org/repos/javassist/trunk@222 30ef5769-5b8d-40dd-aea6-55b5d6557bb3

src/main/javassist/bytecode/AnnotationsAttribute.java

@@ -90,8 +90,12 @@ import javassist.bytecode.annotation.*;
  * a.addMemberValue("name", new StringMemberValue("Chiba", cp));
  * attr.setAnnotation(a);
  * cf.addAttribute(attr);
+ * cf.setVersionToJava5();
  * </pre></ul>
  *
+ * <p>The last statement is necessary if the class file was produced by
+ * Javassist or JDK 1.4.  Otherwise, it is not necessary.
+ *
  * @see AnnotationDefaultAttribute
  * @see javassist.bytecode.annotation.Annotation
  */

src/main/javassist/bytecode/ClassFile.java

@@ -675,7 +675,7 @@ public final class ClassFile {
     }
 
     /**
-     * Set the Major version.
+     * Set the major version.
      * 
      * @param major
      *            the major version
@@ -685,7 +685,7 @@ public final class ClassFile {
     }
 
     /**
-     * Get the Minor version.
+     * Get the minor version.
      * 
      * @return the minor version
      */
@@ -694,7 +694,7 @@ public final class ClassFile {
     }
 
     /**
-     * Set the Minor version.
+     * Set the minor version.
      * 
      * @param minor
      *            the minor version
@@ -702,4 +702,16 @@ public final class ClassFile {
     public void setMinorVersion(int minor) {
         this.minor = minor;
     }
+
+    /**
+     * Sets the major and minor version to Java 5.
+     *
+     * If the major version is older than 49, Java 5
+     * extensions such as annotations are ignored
+     * by the JVM.
+     */
+    public void setVersionToJava5() {
+        this.major = 49;
+        this.minor = 0;
+    }
 }