Here you can find the source of ungzip(byte[] buff)
private static byte[] ungzip(byte[] buff) throws IOException
//package com.java2s; /*// w ww. j a va2 s. c om * Copyright 2012 Krzysztof Otrebski * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.io.*; import java.util.zip.GZIPInputStream; public class Main { private static byte[] ungzip(byte[] buff) throws IOException { GZIPInputStream gzipInputStream = new GZIPInputStream(new ByteArrayInputStream(buff)); byte[] ungzippedRead = new byte[buff.length]; int read = gzipInputStream.read(ungzippedRead); byte[] ungzipped = new byte[read]; System.arraycopy(ungzippedRead, 0, ungzipped, 0, read); return ungzipped; } }