Java tutorial
//package com.java2s; import java.io.ByteArrayOutputStream; import java.util.zip.Deflater; import java.util.zip.DeflaterOutputStream; import org.apache.commons.codec.binary.Hex; public class Main { public static String compressString(String str, String encoding) { String compressedString = ""; try { byte[] input = str.getBytes(encoding); Deflater d = new Deflater(); d.setLevel(Deflater.BEST_COMPRESSION); ByteArrayOutputStream out = new ByteArrayOutputStream(); DeflaterOutputStream dout = new DeflaterOutputStream(out, d); dout.write(input); dout.close(); compressedString = new String(Hex.encodeHex(out.toByteArray())); } catch (Exception e) { e.printStackTrace(); } return compressedString; } }