15.2.2 字符串的提取和查询

来源：互联网发布：手机吉他软件模拟编辑：程序博客网时间：2024/06/03 06:13

import java.util.Scanner;public class weng2 {public static void main(String[] args) {boolean fileCorrect = false;boolean emailCorrect = false;System.out.println("----欢迎进入作业提交系统----");Scanner input = new Scanner(System.in);System.out.println("请输入Java文件名：");String fileName = input.next();System.out.println("请输入你的邮箱");String email = input.next();int index = fileName.lastIndexOf(".");if (index != -1&& index != 0&& fileName.substring(index + 1, fileName.length()).equals("java")) {fileCorrect = true;} else {System.out.println("文件名无效。");}if (email.indexOf('@') != -1 && email.indexOf('.') > email.indexOf('@')) {emailCorrect = true;} else {System.out.println("E~mail无效。");}if (fileCorrect && emailCorrect) {System.out.println("作业提交成功！");} else {System.out.println("作业提交失败！");}}}

0 0