package hfkh.shiyonglei0920;

import java.util.Scanner;

public class Substring12 {
	public static void main(String[] args) {
		boolean fname = false;
		boolean email = false;
		System.out.println("----欢迎进如作业提交系统----");
		Scanner input = new Scanner(System.in);
		System.out.println("请输入Java文件名：");
		String fname1 = input.next();
		System.out.println("请输入你的邮箱：");
		String email1 = input.next();
		
		int index = fname1.lastIndexOf(".");
		if(index!=-1&&index!=0&&fname1.substring(index+1,fname1.length()).equals("Java")){
			fname = true;
		}else{
			System.out.println("文件名无效。");
		}
		if(email1.indexOf('@')!=-1&&email1.indexOf('.')>email1.indexOf('@')){
			email = true;
		}else{
			System.out.println("E-mail无效。");
		}
		if(fname&&email){
			System.out.println("作业提交成功！");
		}else{
			System.out.println("作业提交失败！");
		}
	}

}