java复制文件到另一个目录，然后删除，一直删除不了是因为有流没有关闭

package com.zfsoft.util;

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

public class Test {
    public static void main(String[] args) {
        try {
                File f = new File("F:/TestFile/aa.mp4")；
                File f2 = new File("D:/f.getName()");
                InputStream input = new FileInputStream(f);
                FileOutputStream output = new FileOutputStream(f2);
                FileInputStream fis = new FileInputStream(f2);
                bis.close();
                zos.close();
                output.close();
                //f2.delete();//删除
        } catch (IOException e) {
            e.printStackTrace();
        }
    }




}