java---简单的ATM存取系统,

新手练手必备~

密码账户为：

先创建账户类：

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：

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+"
");
        System.out.print(
                "1.取款"+"
"+
                "2.查询"+"
"+
                "3.存款"+"
"+
                "4.退出"+"
"
                );
    System.out.print(str+"
");
    }
    /************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<5);
        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+"
");
        System.out.print(
                "账号"+act.getNumber()+"
"+
                "姓名"+act.getName()+"
"+
                "余额"+act.getMoney()+"
"+
                str+"
"
                );
    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();
        }
}

代码仅供参考

运行结果如下