fileapp.java

针对越来越多的用户喜欢JAVA

import java.io.*;
class SaveFile
{
  private char ch;
  private int i='a'-'A';
  void save()
  {
    System.out.println("请输入一个字符串：");
    try {
      FileOutputStream out= new FileOutputStream("a.txt");
      while((ch=(char)System.in.read())!='#')
      {
        if(ch>='a'&&ch<= 'z' )
           ch= (char)((int)ch-i);
        out.write(ch);
      }
       out.close();
     } catch(IOException e){ };
  }
}
public class FileApp
{
  public static void main(String[ ] args)
  {
    SaveFile f= new SaveFile();
    f. save();
  }
}