Java tutorial
//package com.java2s; /** * * jerry - Common Java Functionality * Copyright (c) 2012-2015, Sandeep Gupta * * http://sangupta.com/projects/jerry * * 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.ByteArrayOutputStream; import java.io.IOException; import java.util.zip.GZIPOutputStream; public class Main { /** * GZip a given byte-array in-memory. * * @param bytes * the uncompressed bytes * * @return the GZipped byte stream * * @throws IOException * if something fails */ public static byte[] gzipByteArray(byte[] bytes) throws IOException { ByteArrayOutputStream baos = new ByteArrayOutputStream(bytes.length); GZIPOutputStream gzip = new GZIPOutputStream(baos); gzip.write(bytes); gzip.close(); return baos.toByteArray(); } }