javaee字节流文件复制

package Zy;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class Zy {
      //1.用字节流完成eclipse.zip的复制
    public static void main(String[] args) throws IOException {
        long time1=System.currentTimeMillis();
        FileInputStream fis=new FileInputStream("e:\\eclipse.zip");
        FileOutputStream fos=new FileOutputStream("e:\\java\\eclipse.zip");
        byte[] bytes=new byte[1024];
        int len=0;
        while((len=fis.read(bytes))!=-1){
            fos.write(bytes,0,len);
        }
        fis.close();
        fos.close();
        long time2=System.currentTimeMillis();
        System.out.println((time2-time1)/1000);
    }
}