字符缓冲流复制文本

                BufferedReader bs = new BufferedReader(new FileReader("fos.txt"));
		BufferedWriter bw = new BufferedWriter(new FileWriter("fox.txt"));
		String line = null;
		while((line=bs.readLine())!=null){
			bw.write(line);
			bw.newLine();
			bw.flush();
		}
		bs.close();
		bw.close();