import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.zip.ZipEntry;

import java.util.zip.ZipOutputStream;

 

public class Main {

    /**

     * Creates a zip file

     */

    public void createZipFile() {

        

        try {

            String inputFileName = "test.txt";

            String zipFileName = "compressed.zip";

            

            //Create input and output streams

            FileInputStream inStream = new FileInputStream(inputFileName);

            ZipOutputStream outStream = new ZipOutputStream(new FileOutputStream(zipFileName));

            

            // Add a zip entry to the output stream

            outStream.putNextEntry(new ZipEntry(inputFileName));

            

            byte[] buffer = new byte[1024];

            int bytesRead;

            

            //Each chunk of data read from the input stream 

            //is written to the output stream

            while ((bytesRead = inStream.read(buffer)) > 0) {

                outStream.write(buffer, 0, bytesRead);

            }

            //Close zip entry and file streams

            outStream.closeEntry();

            outStream.close();

            inStream.close();

            

        } catch (IOException ex) {

            ex.printStackTrace();

        }

    }

    

    

    /**

     * @param args the command line arguments

     */

    public static void main(String[] args) {

        new Main().createZipFile();

    }

    

}