控制台输出模拟注册登录幸运抽奖

package com.fnd.twoDayFour;

import java.util.Random;
import java.util.Scanner;

public class work2 {

public static void main(String[] args) {
	// TODO Auto-generated method stub
	Scanner sc = new Scanner(System.in);
	String[] inits={"1.注册","2.登录","3.抽奖"};	
	String str = null;
		do {
			System.out.println("*********欢迎进入奖课富翁系统*************");
			for (String string : inits) {
				System.out.println("		" + string);
			}
			System.out.println("************************************");
			String name;
			String pwd;
			int id;
			id =new Random().nextInt(9999);//生成4位会员卡号
			System.out.print("请选择菜单:");
			int num;
			num = sc.nextInt();
			switch (num) {
			case 1:
				System.out.println("[<奖课富翁系统>注册]");
				System.out.println("请填写个人注册信息:");
				System.out.print("用户名:");
				name = sc.next();
				System.out.print("密码:");
				pwd = sc.next();
				System.out.println("注册成功,请记好您的会员卡号");
				System.out.println("用户名	" + "密码	" + "会员卡号");
				System.out.println(name + "	" + pwd + "	" + id);
				break;
			case 2:
				System.out.println("[<奖课富翁系统>登录]");
				System.out.print("请输入用户名");
				name = sc.next();
				System.out.print("请输入密码");
				pwd = sc.next();
				if (name.equals("admin")&&pwd.equals("123456")) {
					System.out.println("欢迎您"+name);
				} 
				break;
			case 3:
				System.out.println("[<奖课富翁系统>抽奖]");
				System.out.print("请输入您的卡号:"+id);
				id = sc.nextInt();//输入之前生成的会员卡号
				int id1 =new Random().nextInt(9999);
				int id2 =new Random().nextInt(9999);
				int id3 =new Random().nextInt(9999);
				int id4 =new Random().nextInt(9999);
				int id5 =new Random().nextInt(9999);
				System.out.print("本日的幸运数字为:"+id1+" "+id2+" "+id3+" "+id4+" "+id5);
				if(id1==id||id2==id||id3==id||id4==id||id5==id){
					System.out.println("您是今日的幸运会员");
				}else {
					System.out.println("很抱歉,您不是今日的幸运会员");
				}
				break;
			default:
				System.out.println("您的输入有误");
			}
			System.out.print("继续吗?(y/n)");
			str = sc.next();
		} while (str.equals("y"));
		if(str.equals("n")){
			System.out.println("系统退出,谢谢使用!");
		}
}

}