Java实现多用户注册登录的幸运抽奖
本文实例为大家分享了Java实现简单幸运抽奖的具体代码，供大家参考，具体内容如下
代码模块：
User类：
package test1;
public class User {
private String userName;
private String password;
private int vipID;
public User(String userName,String password,int vipID) {
this.userName = userName;
this.password = password;
this.vipID = vipID;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public int getVipID() {
return vipID;
}
public void setVipID(int vipID) {
this.vipID = vipID;
}
}
main函数：
package test1;
import java.util.ArrayList;
import java.util.Random;
import java.util.Scanner;
public class TestUser {
private static Scanner in;
public static void main(String[] args) {
// TODO Auto-generated method stub
ArrayList<User> user = new ArrayList<User>();
User u = null;
String conf = null;
String userName = null;
String userPassword = null;
String n;
boolean flag = false;
boolean flag0 = false;
int[][] a = new int[2][5];
in = new Scanner(System.in);
for(int i=0;i<2;i++) {
for(int j=0;j<5;j++) {
Random rand = new Random();
a[i][j] = rand .nextInt(9999) + 1000;
}
}
do {
System.out.println("****************欢迎进入奖客富翁系统*******************");
System.out.println(" 1、注册");
System.out.println(" 2、登录");
System.out.println(" 3、抽奖");
System.out.println("*******************************************************");
System.out.print("请选择菜单:");
n = in.next();
switch(n) {
//用户注册
case "1": {
userName = null;
userPassword = null;
System.out.println("(奖客富翁系统 >注册):");
System.out.print("用户名：");
String name = in.next();
System.out.print("密 码：");
String password = in.next();
System.out.print("确认密码：");
String rePassword = in.next();
if(password.equals(rePassword)) {
Random rand = new Random();
int randNumber = rand .nextInt(9000) + 1000;
u = new User(name,password,randNumber);
user.add(u);
System.out.println("注册成功，请记住您的会员卡号:");
System.out.println("用户名 密码 会员卡号");
System.out.println(u.getUserName()+" "+u.getPassword()+" "+u.getVipID());
}
else {
System.out.println("对不起，您输入的密码不一致！");
}
System.out.print("\n继续吗？y/n：");
String confirm = null;
boolean fir = false;
while(fir == false) {
confirm = in.next();
if(confirm.equals("Y")||confirm.equals("y")||confirm.equals("N")||confirm.equals("n")) {
fir = true;
break;
}
else {
System.out.print("您的输入为非法输入，请重新输入:");
fir = false;
}
}
conf = confirm;
if(conf.equals("n")||conf.equals("N")) {
System.out.println("系统退出，谢谢使用！");
}
}
break;
//用户登录
case "2": {
String eName = null;
String ePassword = null;
userName = null;
userPassword = null;
boolean fla = false;
int eVipID = 0;
System.out.println("(奖客富翁系统 >登录):");
while(fla == false){
System.out.print("用户名：");
userName = in.next();
System.out.print("密 码：");
userPassword = in.next();
if(user.isEmpty()) {
System.out.println("您还没有注册，请先注册！");
flag0 = true;
fla = true;
}else {
for(User e: user) {
if(userName.equals(e.getUserName())) {
if(userName.equals(e.getUserName())&&userPassword.equals(e.getPassword())) {
eName = e.getUserName();
ePassword = e.getPassword();
eVipID = e.getVipID();
fla = true;
System.out.println("欢迎您："+eName);
}else {
System.out.println("您输入的账号或密码有误，请重新输入:");
}
flag0 = true;
break;
}
}
if(flag0 == false) {
System.out.println("您还没有注册，请先注册！");
}
}
}
if(flag0 == true) {
System.out.print("继续吗？y/n：");
String confirm = in.next();
conf = confirm;
if(conf.equals("Y")||conf.equals("y")) {
u= new User(eName,ePassword,eVipID);
}
else if(conf.equals("n")||conf.equals("N")) {
System.out.println("系统退出，谢谢使用！");
}
}else {
String confirm = null;
boolean fir = false;
while(fir == false) {
confirm = in.next();
if(confirm.equals("Y")||confirm.equals("y")||confirm.equals("N")||confirm.equals("n")) {
fir = true;
break;
}
else {
System.out.print("您的输入为非法输入，请重新输入:");
}
}
conf = confirm;
if(conf.equals("n")||conf.equals("N")) {
System.out.println("系统退出，谢谢使用！");
}
}
}
break;
//抽奖
case "3": {
System.out.println("(奖客富翁系统 >抽奖):");
if(u == null||(userName==null&&userPassword==null)){
System.out.println("您还没有登录，请重新登录！");
System.out.print("继续吗？y/n：");
String confirm = null;
boolean fir = false;
while(fir == false) {
confirm = in.next();
if(confirm.equals("Y")||confirm.equals("y")||confirm.equals("N")||confirm.equals("n")) {
fir = true;
break;
}
else {
System.out.print("您的输入为非法输入，请重新输入:");
fir = false;
}
}
conf = confirm;
if(conf.equals("n")||conf.equals("N"))
System.out.println("系统退出，谢谢使用！");
}
else{
System.out.println("欢迎"+u.getUserName()+"来到幸运抽奖！");
System.out.println("您的会员卡号为："+u.getVipID());
for(int i=0;i<2;i++) {
for(int j=0;j<5;j++) {
System.out.print(a[i][j]+" ");
if(u.getVipID() == a[i][j]) {
flag = true;
break;
}else {
flag=false;
}
}
if(flag == true)
break;
}
if(flag == true) {
System.out.println("\n恭喜你成为本日的幸运会员！");
}
else {
System.out.println("\n抱歉，您不是本日的幸运会员！");
}
System.out.print("继续吗？y/n：");
String confirm = null;
boolean fir = false;
while(fir == false) {
confirm = in.next();
if(confirm.equals("Y")||confirm.equals("y")||confirm.equals("N")||confirm.equals("n")) {
fir = true;
break;
}
else {
System.out.print("您的输入为非法输入，请重新输入:");
fir = false;
}
}
conf = confirm;
if(conf.equals("n")||conf.equals("N"))
System.out.println("系统退出，谢谢使用！");
}
break;
}
default:{
System.out.println("您的输入为非法输入，请重新输入:");
System.out.print("继续吗？y/n：");
String confirm = null;
boolean fir = false;
while(fir == false) {
confirm = in.next();
if(confirm.equals("Y")||confirm.equals("y")||confirm.equals("N")||confirm.equals("n")) {
fir = true;
break;
}
else {
System.out.print("您的输入为非法输入，请重新输入:");
fir = false;
}
}
conf = confirm;
if(conf.equals("n")||conf.equals("N"))
System.out.println("系统退出，谢谢使用！");
break;
}
}
}while((conf.equals("Y")||conf.equals("y"))&&(!(n.equals("1"))||!(n.equals("2"))||!(n.equals("3"))));
}
}
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