Here you can find the source of copy(BitSet bs)
public static BitSet copy(BitSet bs)
//package com.java2s; /* $RCSfile$/* ww w .ja v a 2 s . co m*/ * $Author: egonw $ * $Date: 2005-11-10 09:52:44 -0600 (Thu, 10 Nov 2005) $ * $Revision: 4255 $ * * Copyright (C) 2003-2005 The Jmol Development Team * * Contact: jmol-developers@lists.sf.net * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. */ import java.util.BitSet; public class Main { public static BitSet copy(BitSet bs) { return bs == null ? null : (BitSet) bs.clone(); } public static BitSet copy(BitSet a, BitSet b) { if (a == null || b == null) return null; b.clear(); b.or(a); return b; } }