java基础案例8-3模拟银行取钱

package com.itheima;

import java.util.Scanner;

//用户1
class User1 extends Thread{
    Scanner in = new Scanner(System.in);
    public void run(){
        try {
            int balance = 0;
            while(true) {
            System.out.println("(1)存钱   (2)取钱   (3)退出");
            System.out.println("请输入需要进行的操作(用户1):");
            int d = in.nextInt();

            if (d == 1) {
                System.out.println("请放入人民币");
                System.out.println("检查到人民币2000元,成功存入");
                balance += 2000;
                System.out.println("当前的余额为(用户1):" + balance + "元");
                Thread.sleep(5000);
            } else if (d == 2) {
                System.out.println("请输入需要的取出的金额(用户1):");
                d = in.nextInt();
                if (d > balance) {
                    System.out.println("余额不足");
                } else {
                    System.out.println("成功取出");
                    balance -= d;
                    System.out.println("当前的余额为(用户1):" + balance + "元");
                }
                Thread.sleep(5000);
            } else
                break;
        }
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

//用户2
class User2 extends Thread{
    Scanner in = new Scanner(System.in);
    public void run(){
        try {
            int balance = 0;
            while(true) {
            System.out.println("(1)存钱   (2)取钱   (3)退出");
            System.out.println("请输入需要进行的操作(用户2):");
            int d = in.nextInt();
            if (d == 1) {
                System.out.println("请放入人民币");
                System.out.println("检查到人民币2000元,成功存入");
                balance += 2000;
                System.out.println("当前的余额为(用户2):" + balance + "元");
                Thread.sleep(5000);
            } else if (d == 2) {
                System.out.println("请输入需要的取出的金额(用户2):");
                d = in.nextInt();
                if (d > balance) {
                    System.out.println("余额不足");
                } else {
                    System.out.println("成功取出");
                    balance -= d;
                    System.out.println("当前的余额为(用户2):" + balance + "元");
                }
                Thread.sleep(5000);
            } else
                break;
        }
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

public class Main {
    public static void main(String[] args)throws Exception{
        //两个线程
        new User1().start();
        new User2().start();
    }
}