Java（ATM机实验）（源程序）

来源：互联网发布：c语言入门程序代码编辑：程序博客网时间：2024/06/06 05:17
package ATM;import java.io.BufferedReader;import java.io.InputStreamReader;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 String getName() {    return name;}public String getPassword() {    return password;}public double getMoney() {    return money;}protected void sub_Balance(double mon){    money-=mon;}protected void add_Balance(double mon){    money+=mon;}}class ATM{    Account act;    public ATM()    {        act=new Account("000", "test", "111", 5000);    }    protected void Welcome()    {        String str="------------------------";        System.out.print(str+"\n");        System.out.println("1.取款。"+"\n"+        "2.查询。"+"\n"+        "3.存款."+"\n"+        "4.退出系统."+"\n");        System.out.println(str+"\n");    }    protected void Load_Sys() throws Exception    {        String card,pwd;        int counter=0;        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));        do {            System.out.println("请输入您的卡号");            card=br.readLine();            System.out.println("请输入您的密码");            pwd=br.readLine();            if(!isRight(card,pwd))            {                System.out.println("您的卡号或密码输入有误。");                counter++;            }            else                SysOpter();         } while (counter<3);        System.exit(1);    }    protected void SysOpter() throws Exception     {        int num;        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));        System.out.println("请选择您要操作的项目（1-4）:");        num=br.read();        switch(num)        {        case 49:GetBalance();break;        case 50:Inqu_Info();break;        case 51:AddBalance();break;        case 52:Exit_Sys();break;        }        System.exit(1);    }    protected void Inqu_Info()throws Exception    {        System.out.println("-------------------------\n"+    "账户:"+act.getNumber()+"\n"+    "姓名:"+act.getName()+"\n"+    "余额:"+act.getMoney()+"\n"+    "----------------------\n");        SysOpter();    }    public void GetBalance()throws Exception    {        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，请重新输入您要取的数目:");            }            else            {                act.sub_Balance(qu);                System.out.println("取款成功，您的账户余额为:"+act.getMoney());                Welcome();                SysOpter();            }        }while(true);    }    public void AddBalance()throws Exception    {        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_Balance(qu);            System.out.println("存款成功，您的账户余额为:"+act.getMoney());            Welcome();            SysOpter();        }while(true);    }    protected boolean isBalance()    {        if(act.getMoney()<0)        {            return false;        }        return true;    }    protected boolean isRight(String card,String pwd)    {        if(act.getNumber().equals(card)&&act.getPassword().equals(pwd))            return true;        else            return false;    }    protected void Exit_Sys(){        System.out.println("感谢您使用本系统，再见！");        System.exit(1);    }}public class Test {    public static void main(String[] args)throws Exception {        ATM atm=new ATM();        atm.Welcome();        atm.Load_Sys();     }}
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