Here you can find the source of decompressGZIP(byte[] data)
public static byte[] decompressGZIP(byte[] data) throws IOException
//package com.java2s; /*//from ww w . j ava 2s . com * Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. * * WSO2 Inc. licenses this file to you 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.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.zip.GZIPInputStream; public class Main { public static byte[] decompressGZIP(byte[] data) throws IOException { byte[] uncompressedBytes = new byte[1000000]; InputStream inputStream = new ByteArrayInputStream(data); ByteArrayOutputStream out = new ByteArrayOutputStream(); GZIPInputStream gzip = new GZIPInputStream(inputStream); int len; while ((len = gzip.read(uncompressedBytes)) > 0) { out.write(uncompressedBytes, 0, len); } gzip.close(); inputStream.close(); return out.toByteArray(); } }