Java奖客富翁系统

抽奖类

import java.util.Scanner;

public class choujiangmxdx {
	Scanner input = new Scanner(System.in);
	int sj = 1000;
	int sjs = 9999;
	String jxm = "n";
	String yhm = "";
	String mima = "";
	int shuij;
	String yn;
	public void mal() {
		System.out.println("*****欢迎进入奖客富翁系统*****");
		System.out.println("t1.注册nt2.登录nt3.抽奖");
		System.out.println("*****************************");
		System.out.print("请选择菜单：");
		int xz = input.nextInt();
		if(xz==1){
			zhuce();
		}else if(xz==2){
			denglu();
		}else if(xz==3){
			chongjiang();
		}
	}
	public void zhuce(){
		System.out.println("[奖客富翁系统>注册]");
		System.out.println("请填写个人注册信息：");
		shuij = (int) (Math.random() * (sjs - sj)) + sj;
		System.out.print("用户名：");
		yhm = input.next();
		System.out.print("密码：");
		mima = input.next();
		System.out.println("n注册成功，请记住您的会员卡号");
		System.out.println("用户名t密码t会员卡号");
		System.out.println(yhm + "t" + mima + "t" + shuij);
		System.out.print("继续吗？(y/n)：");
		yn=input.next();
		if("y".equals(yn)){
			mal();
		}else{
			System.out.println("系统退出，谢谢使用！");
		}
	}
	public void denglu(){
		System.out.println("[奖客富翁系统>登录]");
		for (int i = 0; i < 3; i++) {
			System.out.print("请输入用户名：");
			String mingz = input.next();
			System.out.print("请输入密码：");
			String mi = input.next();
			if (mingz.equals(yhm) && mi.equals(mima)) {	
				System.out.println("欢迎你！" + mingz);
				break;
			} else {
				System.out.println("用户或密码错误，你还有" + (2 - i) + "次机会");
			}
		}
		System.out.println("继续吗？(y/n)：");
		yn=input.next();
		if("y".equals(yn)){
			mal();
		}else{
			System.out.println("系统退出，谢谢使用！");
		}
	}
	public void chongjiang(){
		System.out.println("[奖客富翁系统>抽奖]");
		System.out.print("请输入你的卡号：");
		int ma = input.nextInt();
		System.out.println("n本日的幸运数字为：");
		int l = 0;
		for (int i = 0; i < 6; i++) {
			int shuij1 = (int) (Math.random() * (sjs - sj)) + sj;
			System.out.print(shuij1 + "t");
			if (ma == shuij1) {
				l = 1;
			}
		}
		if (l == 1) {
			System.out.println("你是本日的会员！");
		} else {
			System.out.println("n抱歉！你不是本日的会员！");
		}
		System.out.println("继续吗？(y/n)：");
		yn=input.next();
		if("y".equals(yn)){
			mal();
		}else{
			System.out.println("系统退出，谢谢使用！");
		}
	}
		}

调试类

import java.util.*;

public class shangj1 {
	public static void main(String[] args) {
		String jxm = "n";
		String yhm = "";
		String mima = "";
		int sj = 1000;
		int sjs = 9999;
		int shuij;
		do {
			Scanner input = new Scanner(System.in);
			System.out.println("*****欢迎进入奖客富翁系统*****");
			System.out.println("t1.注册nt2.登录nt3.抽奖");
			System.out.println("*****************************");
			System.out.print("请选择菜单：");
			int xz = input.nextInt();
			switch (xz) {
			case 1:
				System.out.println("[奖客富翁系统>注册]");
				System.out.println("请填写个人注册信息：");
				shuij = (int) (Math.random() * (sjs - sj)) + sj;
				System.out.print("用户名：");
				yhm = input.next();
				System.out.print("密码：");
				mima = input.next();
				System.out.println("n注册成功，请记住您的会员卡号");
				System.out.println("用户名t密码t会员卡号");
				System.out.println(yhm + "t" + mima + "t" + shuij);
				break;
			case 2:
				System.out.println("[奖客富翁系统>登录]");
				for (int i = 0; i < 3; i++) {
					System.out.println("请输入用户名：");
					String mingz = input.next();
					System.out.println("请输入密码：");
					String mi = input.next();
					if (mingz.equals(yhm) && mi.equals(mima)) {	
						System.out.println("欢迎你！" + mingz);
						break;
					} else {
						System.out.println("用户或密码错误，你还有" + (2 - i) + "次机会");
					}
				}
				break;
			case 3:
				System.out.println("[奖客富翁系统>抽奖]");
				System.out.println("请输入你的卡号：");
				int ma = input.nextInt();
				System.out.println("n本日的幸运数字为：");
				int l = 0;
				for (int i = 0; i < 6; i++) {
					int shuij1 = (int) (Math.random() * (sjs - sj)) + sj;
					System.out.print(shuij1 + "t");
					if (ma == shuij1) {
						l = 1;
					}
				}
				if (l == 1) {
					System.out.println("你是本日的会员！");
				} else {
					System.out.println("n抱歉！你不是本日的会员！");
				}
				break;
			default:
				break;
			}
			System.out.println("继续吗？(y/n)");
			jxm = input.next();
		} while ("y".equals(jxm));
		System.out.println("n系统退出，谢谢使用！");
	}
}