import java.io.BufferedReader;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

public class BrAndBwOrPwDemo {

public static void main(String[] args) throws IOException{

//对文件进行读写操作 

BufferedReader br = new BufferedReader(

new InputStreamReader(

new FileInputStream("e:\\javaio\\imooc.txt")));

/*BufferedWriter bw = new BufferedWriter(

new OutputStreamWriter(

new FileOutputStream("e:\\javaio\\imooc3.txt")));*/

PrintWriter pw = new PrintWriter("e:\\javaio\\imooc4.txt");

//PrintWriter pw1 = new PrintWriter(outputStream,boolean autoFlush);

String line ;

while((line = br.readLine())!=null){

System.out.println(line);//一次读一行，并不能识别换行

/*bw.write(line);

//单独写出换行操作

bw.newLine();//换行操作

bw.flush();*/

pw.println(line);

pw.flush();

}

br.close();

//bw.close();

pw.close();

}

}

利用文件读写方式将其读取后包装到数据报或直接通过TCP进行数据传递