Java学习之输入＋文本输出

import java.io.*;public class jl{public static void main(String args[]) throws Exception{BufferedReader br=new BufferedReader(new InputStreamReader(System.in));BufferedWriter bw=new BufferedWriter(new FileWriter("line.txt"));String s;while(true){System.out.print("输入一个字符串：");System.out.flush();s=br.readLine();if(s.length()==0) break;bw.write(s);bw.newLine();}bw.close();}}