IO

import java.io.InputStreamReader;

public class Student {

 public static void main(String[] args) throws IOException {
  // TODO Auto-generated method stub
  String str="12345abcdef@#%&*软件工程";
  File file=new File("data.txt");
   FileWriter fw=new FileWriter(file);
   BufferedWriter bw = new BufferedWriter(fw);   //
   BufferedReader bin = new BufferedReader(new InputStreamReader(System.in));
   String str1 = bin.readLine();    //接受从控制台输入的一行字符串
   while (!(str1.equals("!!!")))    //如果输入"!!!"则代表输入结束
   {
       bw.write(str1);              //将从控制台输入的字符串写入到文件中
       bw.newLine();               //换新行
       str1 = bin.readLine();       //再从控制台接受输入
   }
   //关闭所有已经打开的流
   bw.close();
   fw.close();
   bin.close();
 }}