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