Java Tutorial/File/DeflaterOutputStream

Create DeflaterOutputStream from FileOutputStream

   <source lang="java">

import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.zip.DeflaterOutputStream; public class MainClass {

 public final static String DEFLATE_SUFFIX = ".dfl";
 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] + DEFLATE_SUFFIX);
       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);
     }
   }
 }

}</source>

Use DeflaterOutputStream to zip

   <source lang="java">

import java.io.FileInputStream; import java.io.FileOutputStream; import java.util.zip.DeflaterOutputStream; public class FileDeflater {

 public static void main(String[] args) throws Exception {
   FileInputStream fin = new FileInputStream("a.dat");
   FileOutputStream fout = new FileOutputStream("b.dat");
   DeflaterOutputStream dos = new DeflaterOutputStream(fout);
   for (int c = fin.read(); c != -1; c = fin.read()) {
     dos.write(c);
   }
   dos.close();
   fin.close();
 }

}</source>