public int hashCode() { return (groupid.hashCode() ^ classname.hashCode() ^ location.hashCode() ^ data.hashCode()); }
public int hashCode() { return groupid.hashCode() ^ classname.hashCode() ^ location.hashCode() ^ data.hashCode(); }
public int hashCode() {	return (groupid.hashCode() ^ classname.hashCode() ^ location.hashCode() ^ data.hashCode());}