java编写简单的ATM存取系统

这篇文章主要介绍了java编写简单的ATM存取系统，附上思路和具体实现代码，适合新人练手用，推荐给小伙伴们。

新手练手必备~

密码账户为：

先创建账户类：

复制代码代码如下:

package cn.Atm;

/**

* @author 偶my耶

import java.io.*;

import com.project.project;

public class Account {

private String number=null;

private String name=null;

private String password=null;

private double money=0.0;

public Account(String number,String name,String password,double money){

this.number=number;

this.name=name;

this.password=password;

this.money=money;

}

public String getNumber() {

return number;

}

public void setNumber(String number) {

this.number = number;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getpassword() {

return password;

}

public void setPassword(String password) {

this.password = password;

}

public double getMoney() {

return money;

}

public void setMoney(double money) {

this.money = money;

}

protected void sub_Balance(double mon) {

money-=mon;

}

protected void add_Balancen(double mon) {

money+=mon;

}

然后建立操作类：

里面包含各种操作方法：

复制代码代码如下:

package cn.Atm;

/**

* @author 偶my耶

import java.io.*;import com.project.project;

public class ATM {

Account act;

public ATM(){

act=new Account("0000", "test", "0000", 2000);

}

/*************欢迎界面*********************/

protected void Welcome(){

String str="~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~";

System.out.print(str+"n");

System.out.print(

"1.取款"+"n"+

"2.查询"+"n"+

"3.存款"+"n"+

"4.退出"+"n"

);

System.out.print(str+"n");

}

/************登陆系统********************/

protected void Load_Sys() throws Exception{

String card,pwd;

int counter=0;

BufferedReader br=new BufferedReader(new InputStreamReader(system.in));

do{

System.out.println("请输入你的卡号");

card=br.readLine();

System.out.println("请输入你的密码");

pwd=br.readLine();

if (!isRight(card,pwd)) {

System.out.println("你的卡号或密码有误");

counter++;

}

else {

Welcome();

SysOpter();

}

}while(counter System.exit(1);

}

/**********系统操作提示******************/

protected void SysOpter() throws Exception {

int num;

BufferedReader br=new BufferedReader(new InputStreamReader(system.in));

System.out.println("请选择你要操作的项目(1--4)");

num=br.read();

switch (num) {

case 49:

GetBalance();

break;

case 50:

Inqu_Iofo();

break;

case 51:

AddBalance();

break;

case 52:

Exit_Sys();

break;

}

/**********信息查询*******************/

protected void Inqu_Iofo() throws Exception{

// Todo Auto-generated method stub

String str="~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~";

System.out.print(str+"n");

System.out.print(

"账号"+act.getNumber()+"n"+

"姓名"+act.getName()+"n"+

"余额"+act.getMoney()+"n"+

str+"n"

);

SysOpter();

}

/**********存款******************/

public void AddBalance() throws Exception{

// Todo Auto-generated method stub

String str=null,str1;

BufferedReader br=new BufferedReader(new InputStreamReader(system.in));

do {

System.out.println("请输入存款数目");

str=br.readLine();

double qu=Double.valueOf(str).doubleValue();

act.add_Balancen(qu);

System.out.println("存款成功，你的账户余额为"+act.getMoney());

Welcome();

SysOpter();

} while (true);

}

/**********取款********************/

public void GetBalance() throws Exception{

// Todo Auto-generated method stub

String str=null,str1;

BufferedReader br=new BufferedReader(new InputStreamReader(system.in));

do {

System.out.println("请输入取款数目");

str=br.readLine();

double qu=Double.valueOf(str).doubleValue();

if(qu>act.getMoney()){

System.out.println("余额不足请重新输入");

}

else {

act.sub_Balance(qu);

System.out.println("取款成功你的账户余额未"+act.getMoney());

Welcome();

SysOpter();

}

} while (true);

}

/*********退出******************/

protected void Exit_Sys () {

// Todo Auto-generated method stub

System.out.println("安全退出！");

System.exit(1);

}

/**********卡号和密码是否正确********************/

protected boolean isRight (String card, String pwd) {

// Todo Auto-generated method stub

if (act.getNumber().equals(card)&&act.getpassword().equals(pwd)) {

return true;

} else {

return false;

}

public static void main(String[] args) throws Exception {

ATM atm=new ATM();

// atm.Welcome();

atm.Load_Sys();

}

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