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）

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源程序Bwriter.java

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;              //如果用户直接回车，代表结束
           w.write(s);
           w.newLine();
                }
           w.close();
           }
      }

输出结果：

编程后感：

1）看到不懂的问题问问同学或者上网百度；

2）老师教导，多敲代码，果真有效；