Java tutorial
import java.io.FileInputStream; import java.io.FileOutputStream; import java.util.zip.GZIPOutputStream; public class Main { public static void main(String[] argv) throws Exception { String outFilename = "outfile.gzip"; GZIPOutputStream out = new GZIPOutputStream(new FileOutputStream(outFilename)); String inFilename = "infilename"; FileInputStream in = new FileInputStream(inFilename); byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) > 0) { out.write(buf, 0, len); } in.close(); out.finish(); out.close(); } }