useregularexprssion.java

该系统使用极其简便

import java.io.*;
public class UseRegularExprssion  {
       public static void main(String[] args) throws IOException{
         BufferedReader reader =new BufferedReader(new InputStreamReader (System.in));

            
       System.out.println("abcdefgabcabc ".replaceAll(".bc","###"));
         

        String phoneEL="[0-9]{4}-[0-9]{6}";
         String urlEL="<a.+href*=*['\"]?.*?['\"]?.*?>";
         String emailEL="^[_a-z0-9-]+(.[_a-z0-9-]+)*"+"@[a-z0-9-]+([.][a-z0-9-]+)*$";
       
        System.out.print("write the phone number:");
           String input = reader.readLine();
          

          if(input.matches(phoneEL))
             System.out.println("geshizhengque");
          else
              System.out.println("geshiwrong");
          

             System.out.print("shuru href biaoqian:");
               input = reader.readLine();

           

           if(input.matches(urlEL))
                System.out.println("geshizhengque");
          else
              System.out.println("geshiwrong");
       
         
         System.out.print("write the email:");
          input = reader.readLine();
          

          if(input.matches(emailEL))
                System.out.println("geshizhengque");
           else
              System.out.println("geshiwrong");
        }
}