源程序Bwriter.java,从键盘输入一系列字符串，写入到某磁盘文件中。

import java.io.*;public class Bwriter {  public static void main(String args[])  throws Exception   {   InputStreamReader i = new InputStreamReader(System.in);   BufferedReader b = new BufferedReader(i);   FileWriter f = new FileWriter("file1.txt");   BufferedWriter w = new BufferedWriter(f); String s; while(true)     {   System.out.print("input a string :");   System.out.flush();    s =b.readLine();    if(s.length() ==0)    break;    w.write(s);    w.newLine(); }  w.close();   }}

程序分析

编程后感

    多阅读，多思考，多动手，有利无害，事半功倍。