Java IO流读取txt输出到控制台

File f =new File("C:\\Users\\15747\\Desktop\\Out.txt");
        FileReader fr=new FileReader(f);
        BufferedReader buffer=new BufferedReader(fr);
        String s=buffer.readLine();
            while (s!=null){
                System.out.println(s);
                s =buffer.readLine();
                System.out.println("1");
            }
            buffer.close();