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java編寫簡單的ATM存取系統(tǒng)

更新時間：2015年02月02日 09:41:37 投稿：hebedich

這篇文章主要介紹了java編寫簡單的ATM存取系統(tǒng)，附上思路和具體實現(xiàn)代碼，適合新人練手用，推薦給小伙伴們。

新手練手必備~

密碼賬戶為：

先創(chuàng)建賬戶類：

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;    

  }

}

然后建立操作類：

里面包含各種操作方法：

復(fù)制代碼代碼如下:

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);
    }
    /*************歡迎界面*********************/
    protected void Welcome(){
        String str="~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~";
        System.out.print(str+"\n");
        System.out.print(
                "1.取款"+"\n"+
                "2.查詢"+"\n"+
                "3.存款"+"\n"+
                "4.退出"+"\n"
                );
    System.out.print(str+"\n");
    }
    /************登陸系統(tǒng)********************/
    protected void Load_Sys() throws Exception{
        String card,pwd;
        int counter=0;
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        do{
            System.out.println("請輸入你的卡號");
            card=br.readLine();
            System.out.println("請輸入你的密碼");
            pwd=br.readLine();
            if (!isRight(card,pwd)) {
                System.out.println("你的卡號或密碼有誤");
                counter++;
            }
            else {
                Welcome();
                SysOpter();
            }
        }while(counter<5);
        System.exit(1);
    }
    /**********系統(tǒng)操作提示******************/
    protected void SysOpter() throws Exception {
        int num;
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        System.out.println("請選擇你要操作的項目(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;
        }
    }
    /**********信息查詢*******************/
    protected void Inqu_Iofo() throws Exception{
        // TODO Auto-generated method stub
        String str="~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~";
        System.out.print(str+"\n");
        System.out.print(
                "賬號"+act.getNumber()+"\n"+
                "姓名"+act.getName()+"\n"+
                "余額"+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("請輸入存款數(shù)目");
            str=br.readLine();
            double qu=Double.valueOf(str).doubleValue();
            act.add_Balancen(qu);
            System.out.println("存款成功，你的賬戶余額為"+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("請輸入取款數(shù)目");
            str=br.readLine();
            double qu=Double.valueOf(str).doubleValue();
            if(qu>act.getMoney()){
                System.out.println("余額不足請重新輸入");
            }
            else {
                act.sub_Balance(qu);
                System.out.println("取款成功你的賬戶余額未"+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);
    }

    /**********卡號和密碼是否正確********************/
    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();
        }
}