public final void clear() {
        for (int i = 0; i < subSets.length; i++) {
            synchronized (subSets[i]) {
                subSets[i].clear();
            } // synchronized (subSets[i]).
        }
    }
public final void clear ( ) { for ( int i = 0 ; i < subSets . length ; i ++ ) { synchronized ( subSets [ i ] ) { subSets [ i ] . clear ( ) ; } } }
/*
(non-Javadoc)

@see java.util.Collection#clear()