Java tutorial
//package com.java2s; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.util.zip.GZIPOutputStream; public class Main { public static byte[] compressStringToByteArray(String uncompressedString) { ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); GZIPOutputStream gzipOutputStream; try { gzipOutputStream = new GZIPOutputStream(byteArrayOutputStream); gzipOutputStream.write(uncompressedString.getBytes("UTF-8")); gzipOutputStream.close(); } catch (IOException e) { e.printStackTrace(); } return byteArrayOutputStream.toByteArray(); } }