Here you can find the source of unzip(byte[] data)
public static byte[] unzip(byte[] data) throws IOException
//package com.java2s; /*************************************************************************** * Filename: Util.java/* w ww. jav a 2 s.c om*/ * Author: artjom.lind@ut.ee *************************************************************************** * Copyright (C) 2009 by Ulrich Norbisrath * devel@mail.ulno.net * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Library General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *************************************************************************** * Description: * For handling the serialization and compression ***************************************************************************/ import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.List; import java.util.zip.GZIPInputStream; public class Main { public static byte[] unzip(byte[] data) throws IOException { InputStream is = new ByteArrayInputStream(data); GZIPInputStream gz = new GZIPInputStream(is); List<Byte> l = new ArrayList<Byte>(); while (gz.available() != 0) l.add((byte) gz.read()); // last byte is unnecessary (it is -1) byte[] uncmp = new byte[l.size() - 1]; for (int i = 0; i < l.size() - 1; i++) uncmp[i] = l.get(i); return uncmp; } }