题解 | #邮箱验证#

import java.util.Scanner;
import java.util.regex.Pattern;

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......
        boolean result = Pattern.matches(emailMatcher, str);
        if (result){
            System.out.println("邮箱格式合法");
        }
        else{
            System.out.println("邮箱格式不合法");
        }
    }
}