package com.imooc.file;

import java.io.BufferedOutputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

public class BufferDemo {

public static void main(String[] args) {

try {

FileOutputStream one = new FileOutputStream("one.txt");

FileOutputStream one1 = new FileOutputStream("two.txt");

BufferedOutputStream two = new BufferedOutputStream(one1);

System.out.println("one.txt不使用缓冲流来写");

long startTime1 = System.currentTimeMillis();

for (int i = 1; i <= 10000; i++) {

one.write(1);

}

one.close();

long endTime1 = System.currentTimeMillis();

System.out.println("用时为" + (endTime1 - startTime1));

    long x=endTime1 - startTime1;

System.out.println("two.txt使用缓冲流来写");

long startTime2 = System.currentTimeMillis();

for (int i = 1; i <= 10000; i++) {

two.write(1);

}

two.close();

long endTime2 = System.currentTimeMillis();

System.out.println("用时为" + (endTime2 - startTime2));

long y=endTime2 - startTime2;

           System.out.println("节省时间："+(x-y));

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}