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/*
* 功能：缓冲字符流
*/
package com.tt.IO;
import java.io.*;
public cla Demo7 {
public static void main(String[] args){// TODO Auto-generated method stub//先创建FileReader
FileReader fr=null;
BufferedReader br=null;
FileWriter fw=null;
BufferedWriter bw=null;
try {
fr=new FileReader(“d:1.txt”);br=new BufferedReader(fr);
fw=new FileWriter(“d:1_2.txt”);bw=new BufferedWriter(fw);
String s=“”;
//循环读取,当读完时返回null
while((s=br.readLine())!=null){
bw.write(s+“rn”);
}
} catch(Exception e){
// TODO Auto-generated catch blocke.printStackTrace();
}
finally
{
try {
br.close();
bw.close();
} catch(IOException e){
// TODO Auto-generated catch blocke.printStackTrace();
}
}
}
}
