How can zip file using java ?

Question

I would like to ask is that any package or example code allowing zipping serveral file using java ?

Answer 1

Here's a test program I wrote, which may help. As far as I know the jip/zar classes are interchangeable.
import java.io.*;
import java.util.jar.*;
public class ZipTest
    public static void main(String[] args) throws Exception
        /* create a file stream for the new zip file */
        FileOutputStream fileOutputStream=new FileOutputStream("test.zip");
        JarOutputStream zipOutputStream=new JarOutputStream(fileOutputStream);
        /* open file to add to zip file */
        File file=new File("test.dat");
        FileInputStream fileInputStream=new FileInputStream(file);
        /* create a buffer and read file into buffer */
        int length=(int)file.length();
        byte[] buffer=new byte[length];
        fileInputStream.read(buffer,0,length);
        /* create entry in zip file */
        JarEntry jarEntry=new JarEntry("test.dat");
        /* add it */
        zipOutputStream.putNextEntry(jarEntry);
        zipOutputStream.write(buffer,0,length);
        /* clean up and exit */
        fileInputStream.close();
        zipOutputStream.close();
}