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......
        if(str.matches(emailMatcher)){ //.matches:是判断该语法是否符合规则
            System.out.println("邮箱格式合法");
        }else{
             System.out.println("邮箱格式不合法");
        }

    }
}