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+"\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<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+"\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();
         }
 }

ATM

代码仅供参考

运行结果如下