java用缓冲区读取文件

 

FileInputStream
fis = new FileInputStream(111.txt);

InputStreamReader
isr = new InputStreamReader(fis);   

//字节流转换成InputStreamReader

BufferedReader
br = new BufferedReader(isr);   

//InputStreamReader 转换成带缓存的bufferedReader  

String
ss = new String();   

String s;   

while((s = br.readLine())!=null){   

       
ss += s;   

}   

System.out.println(ss);