Here you can find the source of unzip(byte[] compressedData)
public static byte[] unzip(byte[] compressedData)
//package com.java2s; /*/* www .ja va2 s. co m*/ * Werkzeug * * Copyright (C) 2012 Patrick Kochlik + Dennis Paul * * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * {@link http://www.gnu.org/licenses/lgpl.html} * */ import java.io.ByteArrayOutputStream; import java.io.IOException; import java.util.zip.DataFormatException; import java.util.zip.Inflater; public class Main { public static byte[] unzip(byte[] compressedData) { // Create the decompressor and give it the data to compress final Inflater decompressor = new Inflater(); decompressor.setInput(compressedData); // Create an expandable byte array to hold the decompressed data final ByteArrayOutputStream bos = new ByteArrayOutputStream(compressedData.length); // Decompress the data byte[] buf = new byte[1024]; while (!decompressor.finished()) { try { int count = decompressor.inflate(buf); bos.write(buf, 0, count); } catch (DataFormatException e) { } } try { bos.close(); } catch (IOException e) { e.printStackTrace(); } // Get the decompressed data final byte[] decompressedData = bos.toByteArray(); return decompressedData; } }