java12周（2）第一题

import java.util.*;
public class fuxi_2 {
 Scanner input = new Scanner(System .in);
 String email;
 fuxi_2(){
  System.out.println("请输入你的Email地址");
  email=input.next();
  if (email.indexOf('@') != -1&& email.indexOf('.') > email.indexOf('@')) {
   System.out.println("邮箱地址合法！");
  } else {
   System.out.println("邮箱地址无效。");

  }
 }
 public static void main(String[] args) {

  new fuxi_2();
 }

}