字节流复制视频以及对比时长

package com.czie.iot1913.lps.IO.BufferStream;

import java.io.*;

/**
 * FileName: CopyAviDemo01
 * Author:   lps
 * Date:     2022/3/24 20:25
 * Sign:刘品水 Q：1944900433
 */
public class CopyAviDemo01 {
    public static void main(String[] args) throws Exception {
        //开始时间
        long startTime = System.currentTimeMillis();
        //method01();//用时：7毫秒  一次读写一个字节数组
        //method02();//用时：5184毫秒 一次读取一个字节
        //method03();//用时：3毫秒 字节缓冲流一次读取一个字节数组
        method04();//用时：3462毫秒  字节缓冲流一次读取一个字节
        long endTime = System.currentTimeMillis();
        System.out.println("用时：" + (endTime - startTime) + "毫秒");


    }

    public static void method01() throws IOException {
        FileInputStream fis = new FileInputStream("E:\\itcast\\字节流复制图片.avi");
        FileOutputStream fos = new FileOutputStream("F:\\JavaCode\\字节流复制图片.avi");
        byte[] bys = new byte[1024];
        int len;
        while ((len = fis.read(bys)) != -1) {
            fos.write(bys, 0, len);
        }
        fis.close();
        fos.close();

        fis.close();
        fos.close();
    }

    public static void method02() throws IOException {
        FileInputStream fis = new FileInputStream("E:\\itcast\\字节流复制图片.avi");
        FileOutputStream fos = new FileOutputStream("F:\\JavaCode\\字节流复制图片.avi");
        int by;
        while ((by = fis.read()) != -1) {
            System.out.println((char) by);
        }
        fis.close();
        fos.close();

    }

    public static void method03() throws IOException {

        BufferedInputStream bis = new BufferedInputStream(new FileInputStream("E:\\itcast\\字节流复制图片.avi"));
        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("F:\\JavaCode\\字节流复制图片.avi"));

        byte[] bys = new byte[1024];
        int len;
        while ((len = bis.read(bys)) != -1) {
            bos.write(bys, 0, len);
        }
        bis.close();
        bos.close();
    }

    public static void method04() throws IOException {

        BufferedInputStream bis = new BufferedInputStream(new FileInputStream("E:\\itcast\\字节流复制图片.avi"));
        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("F:\\JavaCode\\字节流复制图片.avi"));

        int by;
        while ((by = bis.read()) != -1) {
            System.out.println((char) by);
        }
        bis.close();
        bos.close();
    }
}