Here you can find the source of ungzip(InputStream ins)
public static InputStream ungzip(InputStream ins) throws IOException
//package com.java2s; /******************************************************************************* * Copyright (c) 2014,2015 Hideki Yatomi * All rights reserved. This program and the accompanying materials are made * available under the terms of the Eclipse Public License v1.0 which * accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html ******************************************************************************/ import java.io.*; import java.util.zip.*; public class Main { public static InputStream ungzip(InputStream ins) throws IOException { return new GZIPInputStream(ins); }/* ww w.ja va 2s . com*/ }