Java编写的模拟ATM取款机程序-JAVA91知识库

Java编写的模拟ATM取款机程序

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/**********实现具体取款机功能*********/

class ATM {
    Account act;
    // private String name;
    // private String pwd;
    public ATM() {
        act = new Account("000000", "Devil", "123456", 50000);
    }

/***********欢迎界面***********/
    protected void Welcome() {
        String str = "---------------------------------";
        System.out.print(str + "n" + "欢迎使用Angel模拟自动取款机程序.n" + str + "n");
        System.out.print(" 1.>取款." + "n" + " 2.>查询信息." + "n" + " 3.>密码设置." + "n" + " 4.>退出系统." + "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("请输入您的信用卡号:");
            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 );
        Lock_Sys();
    }

/**********系统操作**********/
    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(); //num为ASICC码转换的整数
        switch (num) {
        case 49:
            BetBalance();
            break;
        case 50:
            Inqu_Info();
            break;
        case 51:
            Set_Password();
            break;
        case 52:
            Exit_Sys();
            break;
        }
        System.exit(1);
    }

/**********信息查询**********/
    protected void Inqu_Info() {
        System.out.print("---------------------n" + act.get_Code() + "n" + act.get_Name() + "n" + act.get_Money() + "n" + "-----------------------");
    }

/**********取款**********/
    public void BetBalance() throws Exception {
        String str = null,
        str1;
        BufferedReader br = new BufferedReader(new InputStreamReader(System. in ));
        do {
            System.out.println("请输入您要取的数目:");
            str = br.readLine();
            str1 = String.valueOf(act.get_Money());
            if (str.compareTo(str1) > 0) {
                System.out.println("超过已有的钱数,请重新输入您要取的数目:");
            } else {
                /*操作成功*/
                //    act.set_Balance(str);
                System.out.println("取款成功,请收好您的钱.");
                Welcome();
                SysOpter();
            }
        } while ( true );

}

/**********判断卡内是否有钱**********/
    protected boolean isBalance() {
        if (act.get_Money() < 0) {
            //   System.out.println("对不起,您的钱数不够或卡已透支.");
            return false;
        }
        return true;
    }

/********卡号密码是否正确******/
    protected boolean isRight(String card, String pwd) {
        if (act.get_Code().equals(card) && act.get_Password().equals(pwd)) return true;
        else return false;
    }

/**********密码修改**********/
    protected void Set_Password() throws Exception {
        String pwd = null;
        int counter = 0;
        BufferedReader br = new BufferedReader(new InputStreamReader(System. in ));
        do {
            System.out.println("请输入旧密码:");
            pwd = br.readLine();
            if (act.get_Password().equals(pwd)) {
                do {
                    System.out.println("请输入新密码:");
                    String pwd1 = br.readLine();
                    System.out.println("请再次输入新密码:");
                    String pwd2 = br.readLine();
                    if (!pwd1.equals(pwd2)) {
                        System.out.println("两次输入不一致,请再次输入.");
                    } else {
                        System.out.println("密码修改成功,请使用新密码.");
                        Welcome();
                        SysOpter();
                    }
                } while ( true );
            }
        } while ( counter > 3 );

}

/**********锁定机器**********/
    protected void Lock_Sys() {
        System.out.println("对不起,您的操作有误,卡已被没收.");
        System.exit(1);
    }

/**********结束系统**********/
    protected void Exit_Sys() {
        System.out.println("感谢您使用本系统,欢迎下次在来,再见!");
        System.exit(1);
    }

}