字符缓冲流

实例演示

BufferedReader bufferedReader = new BufferedReader(new FileReader("D:\\a.txt"));        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter("F:\\a.txt"));        String line=null;        while((line = bufferedReader.readLine())!=null){        bufferedWriter.write(line);        }        bufferedWriter.close();        bufferedReader.close();    }

BufferedWriter的好处就是拓展了Writer方法，newLine()方法方便换行；
BufferedReader的好处就是拓展Reader方法，readLine()可以怡行为单位读取数据。