Here you can find the source of uncompressObject(byte[] compressed)
public static Object uncompressObject(byte[] compressed) throws Exception
//package com.java2s; /*//w w w .j a va 2 s .com * Copyright (C) 2005 - 2014 TIBCO Software Inc. All rights reserved. * http://www.jaspersoft.com. * * Unless you have purchased a commercial license agreement from Jaspersoft, * the following license terms apply: * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.io.ByteArrayInputStream; import java.io.ObjectInputStream; import java.util.zip.GZIPInputStream; public class Main { public static Object uncompressObject(byte[] compressed) throws Exception { ByteArrayInputStream bais = new ByteArrayInputStream(compressed); GZIPInputStream gzis = new GZIPInputStream(bais); ObjectInputStream ois = new ObjectInputStream(gzis); return ois.readObject(); } }