题解 | #邮箱验证#

import java.util.Scanner;

public class Main { public static void main(String[] args) {

    Scanner scanner = new Scanner(System.in);
    String str = scanner.next();
    String emailMatcher="[a-zA-Z0-9]+@[a-zA-Z0-9]+\\.[a-zA-Z0-9]+";

    //write your code here......
    
   System.out.println(str.matches(emailMatcher)?"邮箱格式合法":"邮箱格式不合法");
}

}