ATM机的实现java

具体实现

//基本变量

public class Bean {
static int  balance=1000;//余额
int arr[][]={
         
  {
         
  123,123},{
         
  111,111}};

public int getBalance() {

return balance;
}
public void setBalance(int balance) {
this.balance = balance;
}

//显示当前余额
public int balance(){
return this.balance;
}
//取钱操作
public int takemoney(int takemoney1){
this.balance-=takemoney1;
return balance;
}
//存钱操作
public int savemoney(int savemoney1){
this.balance+=savemoney1;
return balance;
}
}

//具体实现方法

import java.util.Scanner;

public class Achieve {
public static void achieve(){
Bean bean=new Bean();
Scanner scanner=new Scanner(System.in);
System.out.println("欢迎进入当前用户,请输入您的操作");
System.out.println("1.查询当前余额");
System.out.println("2.取款");
System.out.println("3.存款");
System.out.println("0.返回主界面");
int input = scanner.nextInt();
switch (input) {
case 0:
achieve();
break;
case 1:
System.out.println("当前余额为："+bean.balance);
System.out.println("按任意键返回主页");
int input0=scanner.nextInt();
achieve();
break;
case 2:
System.out.println("请输入取款金额：");
int takemoney1=scanner.nextInt();
bean.takemoney(takemoney1);
System.out.println("当前余额为："+bean.balance);
System.out.println("**************");
achieve();
break;
case 3:
System.out.println("请输入存款金额：");
int savemoney1=scanner.nextInt();
bean.savemoney(savemoney1);
System.out.println("当前余额为："+bean.balance);
System.out.println("*************");
achieve();
break;
default:
System.out.println("输入无效，请重新输入");
int input1=scanner.nextInt();
achieve();
break;
}
}
public static void start(){
Bean bean=new Bean();
Scanner scanner=new Scanner(System.in);
System.out.println("欢迎进入银行系统！");
System.out.println("*************");
System.out.println("请输入卡号：");
Integer CardNumer = scanner.nextInt();
System.out.println("请输入密码：");
Integer judgePin = scanner.nextInt();
for (int i = 0; i < bean.arr.length; i++) {
if (CardNumer==bean.arr[i][0]){
if (judgePin == bean.arr[i][1]) {
achieve();
}
} else {
System.out.println("当前用户名或密码不正确，返回主界面请按0");
int input=scanner.nextInt();
if(input==0){
start();
}else {
System.out.println("输入错误");
}
}
}
}
}



//主方法
public class ATMmain {
public static void main(String[] args) {
Achieve achieve=new Achieve();
achieve.start();
}
}