n java.util">contains</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/util/Set.html?is-external=true#containsAll(java.util.Collection)" title="class or interface in java.util">containsAll</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/util/Set.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.util">equals</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/util/Set.html?is-external=true#hashCode()" title="class or inter