Java tutorial
//package com.java2s; /** * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF 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 * <p/> * http://www.apache.org/licenses/LICENSE-2.0 * <p/> * 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 com.google.common.io.ByteStreams; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.util.zip.GZIPInputStream; public class Main { public static byte[] decompress(byte[] compressed) throws IOException { if (compressed == null || compressed.length == 0) { return compressed; } ByteArrayInputStream sourceStream = new ByteArrayInputStream(compressed); ByteArrayOutputStream outputStream = new ByteArrayOutputStream(compressed.length * 2); try (GZIPInputStream compressor = new GZIPInputStream(sourceStream)) { ByteStreams.copy(compressor, outputStream); compressor.close(); } try { return outputStream.toByteArray(); } finally { sourceStream.close(); outputStream.close(); } } }