java编写简单的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();
        }
}

代码仅供参考

运行结果如下

 

好了，小伙伴们可以自己做个atm机了^_^