多态

    

import java.util.*;
public class ATMRe {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        //如果使用的是Account类数组，可以使用以下方式直接add添加
        //目前其中只有获得余额的方法
        Vector<Information> ac=new Vector<Information>();
        
        Scanner in=new Scanner(System.in);
        Manage test=new Manage("Tom","6212260402013456234","123456",1000);
        int c1,c2;
        System.out.println("请输入密码");
        String p=in.next();
        if(p.equals(test.getpassword()))
        {
            while(true)
            {
                test.window();
                System.out.println("请选择");
                c1=in.nextInt();
                test.setchoice(c1);
                if(test.getchoice()==1)
                {
                    System.out.println("请输入存款金额");
                    double x=in.nextDouble();
                    test.deposit(x);
                    System.out.println("用户余额为"+test.getbalance()+"元");
                }
                if(test.getchoice()==2)
                {
                    test.withdrawwindow();
                    System.out.println("请选择");
                    c2=in.nextInt();
                    if(c2==8)
                        break;
                    else
                    {
                        test.withdraw(c2);
                        System.out.println("用户余额为"+test.getbalance()+"元");
                    }
                }
                if(test.getchoice()==3)
                {
                    System.out.println("请输入转账卡号、转账金额");
                    String n=in.next();
                    double m=in.nextDouble();
                    test.transfer(n, m);
                    System.out.println("用户余额为"+test.getbalance()+"元");
                }
                if(test.getchoice()==4)
                {
                    System.out.println("请输入修改的密码（6位）");
                    String z=in.next();
                    test.setpassword(z);
                    if((test.getpassword()).equals(z))
                        System.out.println("修改成功");
                    else 
                    {
                        System.out.println("修改失败，请重新选择修改密码操作");
                    }
                }
                if(test.getchoice()==5)
                {
                    System.out.println("用户余额为"+test.getbalance()+"元");
                }
            }
        }
        else
        {
            System.out.println("用户输入错误密码，该卡已被锁定，无法操作！");
        }
    }

}
class Information
{
    public void outputbalance(Vector<Account> ac)
    {
        for(Account a:ac)
        {
            a.getbalance();
        }
    }
}
class Manage extends Account
{
    Manage(String n,String i,String p,double b)
    {
        name=n;
        id=i;
        password=p;
        balance=b;
    }
    public void window()
    {
        System.out.println("************");
        System.out.println("主窗口");
        System.out.println("1.存款");
        System.out.println("2.取款");
        System.out.println("3.转账汇款");
        System.out.println("4.修改密码");
        System.out.println("5.查询余额");
        System.out.println("************");
    }
    public void withdrawwindow()
    {
        System.out.println("************");
        System.out.println("取款窗口");
        System.out.println("1.100");
        System.out.println("2.500");
        System.out.println("3.1000");
        System.out.println("4.1500");
        System.out.println("5.2000");
        System.out.println("6.5000");
        System.out.println("7.其他金额");
        System.out.println("8.退卡");
        System.out.println("9.返回");
        System.out.println("************");
    }
    public void withdraw(int c)
    {
        choice=c;
        if(choice==1) balance=balance-100;
        if(choice==2) balance=balance-500;
        if(choice==3) balance=balance-1000;
        if(choice==4) balance=balance-1500;
        if(choice==5) balance=balance-2000;
        if(choice==6) balance=balance-5000;
        if(choice==7)
        {
            System.out.println("请输入存款金额");
            double x=input.nextDouble();
            balance=balance-x;
        }
        if(choice==9)
            window();
    }
    public void deposit(double d)
    {
        balance=balance+d;
    }
    public void transfer(String a,double t)
    {
        if(balance>=t)
        {
            balance=balance-t;
            System.out.println("转账成功");
        }
        else
        {
            System.out.println("余额不足，无法转账");
        }
    }
}
class Account
{
    Scanner input=new Scanner(System.in);
    public String id;
    public String name;//姓名
    public int choice;//操作
    public String password;//密码
    public double balance;//余额
    Account(){}
    public double getbalance()
    {
        return balance;
    }
    public void setchoice(int c)
    {
        choice=c;
    }
    public int getchoice()
    {
        return choice;
    }
    public String getpassword()
    {
        return password;
    }
    public void setpassword(String p)
    {
        password=p;
    }
}