Java tutorial
import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.zip.DeflaterOutputStream; public class Main { public static void main(String[] args) { for (int i = 0; i < args.length; i++) { try { FileInputStream fin = new FileInputStream(args[i]); FileOutputStream fout = new FileOutputStream(args[i] + "dfl"); DeflaterOutputStream dos = new DeflaterOutputStream(fout); for (int c = fin.read(); c != -1; c = fin.read()) { dos.write(c); } dos.close(); fin.close(); } catch (IOException ex) { System.err.println(ex); } } } }