public boolean isBcontains(BitSet H){
  BitSet M=((BitSet)B.clone());
  M.and(H);
  return M.cardinality() == H.cardinality();
}

public boolean isBcontains ( BitSet H ) { BitSet M = ( ( BitSet ) B . clone ( ) ) ; M . and ( H ) ; return M . cardinality ( ) == H . cardinality ( ) ; }
does b part contain set h ?
