BufferReader案例

package ioliu;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.Reader;

public class Testbuffer {

    public static void main(String[] args) throws Exception {
//    //1.定义一个文件
//        File f=new File("d:/cxf.txt");
//    //2.定义一个FileReader
//        Reader r=new FileReader(f);
//    //3.定义一个BufferReader
//        BufferedReader br=new BufferedReader(r);
//        
        BufferedReader br=new BufferedReader(new FileReader("d:/cxf.txt"));
    //4.读取文本
        for(String str=null;(str=br.readLine())!=null;){
            System.out.println(str);
        }
            
    //5.关闭资源    
        br.close();
    

    }

}