Java tutorial
import java.io.ByteArrayOutputStream; import java.util.Arrays; import java.util.zip.Deflater; public class Main { public static void main(String[] argv) throws Exception { byte[] input = "www.java2s.com".getBytes(); Deflater compressor = new Deflater(); compressor.setLevel(Deflater.BEST_COMPRESSION); compressor.setInput(input); compressor.finish(); ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length); byte[] buf = new byte[1024]; while (!compressor.finished()) { int count = compressor.deflate(buf); bos.write(buf, 0, count); } bos.close(); byte[] compressedData = bos.toByteArray(); System.out.println(Arrays.toString(compressedData)); } }