读到缓冲区，BufferedReader

public class IODemo {

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

  //创建一个读取对象和文件相关联

FileReader fr=new FileReader("G:\\dd.txt");

         BufferedReader bufr=new BufferedReader(fr);

   //String s1=bufr.readLine();//一行一行读

   String line=null;

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

   
 System.out.println(line);

   }

   bufr.close();


}

 }