private Vector appendVector(Vector vec,Vector appvec){
  if (appvec != null) {
    for (int count=0; count < appvec.size(); count++) {
      vec.addElement(appvec.elementAt(count));
    }
  }
  return vec;
}

private Vector appendVector ( Vector vec , Vector appvec ) { if ( appvec != null ) { for ( int count = 0 ; count < appvec . size ( ) ; count ++ ) { vec . addElement ( appvec . elementAt ( count ) ) ; } } return vec ; }
append two vectors , returning the result .
