java压缩文件，zip打包

package test;

import java.io.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class Zip {
    static final int BUFFER = 2048;

    public static void main(String argv[]) {
        try {
            BufferedInputStream origin = null;
            FileOutputStream dest = new FileOutputStream("f:\\test\\myfiles.zip 

");
            ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(
                    dest));
out.setEncoding("gbk");
            byte data[] = new byte[BUFFER];
            File f = new File("f:\\test\\");
            File files[] = f.listFiles(new FilenameFilter() {
                @Override
                public boolean accept(File dir, String name) {
                    return !name.toLowerCase().endsWith(".zip");
                }
            });

            for (int i = 0; i < files.length; i++) {
                FileInputStream fi = new FileInputStream(files[i]);
                origin = new BufferedInputStream(fi, BUFFER);