Java Zip压缩

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class JavaMain ...{

    public static void main(String[] args) throws Exception ...{
        String zip = "pac.zip";
        String one = "one.txt";
        String two = "two.txt";
        FileOutputStream fos = new FileOutputStream(zip);
        ZipOutputStream zos = new ZipOutputStream(fos);
        BufferedOutputStream bos = new BufferedOutputStream(zos);

        zos.setComment("About Java Zipping");
        
        FileInputStream fisOne = new FileInputStream(one);
        BufferedInputStream bisOne = new BufferedInputStream(fisOne);
        zos.putNextEntry(new ZipEntry("one.txt"));
        int value = -1;
        while ((value = bisOne.read()) != -1) ...{
            bos.write(value);
        }
        bos.flush();
        bisOne.close();
        
        FileInputStream fisTwo = new FileInputStream(two);
        BufferedInputStream bisTwo = new BufferedInputStream(fisTwo);        
        zos.putNextEntry(new ZipEntry("two.txt"));
        value = -1;
        while ((value = bisTwo.read()) != -1) ...{
            bos.write(value);
        }
        bos.flush();
        bisTwo.close();
        
        bos.close();
    }
    
}