For the code below the javadoc tool will generate the same id attribute for a different elements. In the code take a look to the name of the method "public void EditorContainer()"

======================
package javadoc;

/**
 * Some description....
 */
public class SomeClass {

    /**
     * Some description....
     */
    public class EditorContainer {

        /**
         * Some description....
         */
        public EditorContainer() {
        }

        /**
         * Some description....
         */
        public void EditorContainer() {
        }
    }
}
======================


The link for convenience
http://cr.openjdk.java.net/~serb/tmp/reuse_id/doc/javadoc/SomeClass.EditorContainer.html

Note these html parts:

<h3>Constructor Detail</h3>
<a name="EditorContainer--">
<!-- -->
</a>

<h3>Method Detail</h3>
<a name="EditorContainer--">
<!-- -->
</a>


Of course this is the corner case, but it is exists in the Swing. So I cannot fully clean the tidy warnings.