import java.io.BufferedOutputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

public class FileDemo1 {

public static void main(String[] args) {

try {

FileOutputStream one = new FileOutputStream("/Users/dong/text.txt");

BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("/Users/dong/happy.txt"));

long onestr = System.currentTimeMillis();

for(int i =0;i<10000;i++) {

one.write(i);

}

one.flush();

one.close();

long oneend = System.currentTimeMillis();

System.out.print("one不用缓冲区来写用时为");

System.out.println(onestr-oneend);

long bosstr = System.currentTimeMillis();

for(int i =0;i<10000;i++) {

bos.write(i);

}

bos.flush();

bos.close();

long bosend = System.currentTimeMillis();

System.out.print("bos用缓冲区来写用时为：");

System.out.println(bosstr-bosend);

System.out.println("节约时间："+((bosstr-bosend)-(onestr-oneend)+"ms"));

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}