public boolean checkComplete() {
	if ( spade.peek() == null ||
	     heart.peek() == null ||
	     club.peek() == null ||
	     diamond.peek() == null )
	    return false;
	if ( spade.peek().equals("SK") &&
	     heart.peek().equals("HK") &&
	     club.peek().equals("CK") &&
	     diamond.peek().equals("DK") )
	    return true;
	return false;
    }