Java（多态）动手动脑

import java.util.Scanner;
abstract class atma{
    public abstract void QuKuan();
    public abstract void CunKuan();
    public abstract void ZhuanZhang();
    public abstract void updataMima(String str);
    public abstract void showMoney();
}
public class ATM {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Account A = new Account();
        A.display();
    }

}
class Account extends atma
{
    String account;
    String name;
    String data;
    int leixing;
    String mima;
    double money;
    Account(){}
    Account(String account,String name,String data,String mima,double money)
    {
        this.account = account;
        this.name = name;
        this.data = data;
        this.mima = mima;
        this.money = money;
    }
    public String getMima()
    {
        return mima;
    }
    
    public void Mune()
    {
        System.out.println("1.取款");
        System.out.println("2.存款");
        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("6.退卡");
    }
    public void QuKuan()
    {
        System.out.println("100元");
        System.out.println("500元");
        System.out.println("1000元");
        System.out.println("1500元");
        System.out.println("2000元");
        System.out.println("5000元");
        System.out.println("其他金额");
        System.out.println("返回");
        Scanner in = new Scanner(System.in);
        System.out.println("请输入取款金额：");
        int M = in.nextInt();
        if(M <= money)
        {
            System.out.println("正在取款请稍后。。。");
            money = money - M;
            System.out.println("取款成功！");
        }
        else
        {
            System.out.println("余额不足，取款失败！");
        }
    }
    public void CunKuan()
    {
        Scanner in = new Scanner(System.in);
        System.out.println("请输入存款金额：");
        int M = in.nextInt();
        money = money + M;
        System.out.println("存款成功！");
    }
    public void ZhuanZhang()
    {
        Scanner in = new Scanner(System.in);
        System.out.println("请输入转账行号：");
        String H = in.next();
        System.out.println("你要转账的人的姓名是否为xxx?0:是,1:否");
        int X=in.nextInt();
        if(X==0)
        {
            System.out.println("请输入转账金额：");
            int M = in.nextInt();
            if(money >= M)
            {
                System.out.println("转账成功！");
                money = money - M;
            }
            else
            {
                System.out.println("余额不足，转账失败！");
            }
        }
        if(X==1)
        {
            System.out.println("卡号错误！");
        }
    }
    public void updataMima(String str)
    {
        if(str.equals(mima))
        {
            System.out.println("新密码不得与旧密码重复！");
        }
        else
        {
            mima = str;
            System.out.println("修改成功！");
        }
    }
    public void showMoney()
    {
        System.out.println("您的账户余额为："+money);
    }
    public void display()
    {
        Scanner in = new Scanner(System.in);
        Account[] a = new Account[100];
        a[0] = new Account("123456789101","ctt","2016/11/15","123456",1000);
        System.out.println( "请输入密码：" );
        String input = in.next();
        boolean flag = false;
        for(int i  = 0;i<50;i++)
        {
            if(a[i].getMima().equals(input)&& a[i]!=null)
                flag = true;
            break;
        }
        int s1;
        if(flag)
        {
            boolean p = true;
            while(p)
            {
            Mune();
            System.out.println( "请输入要执行的操作：" );
            s1 = in.nextInt();
            if(s1 == 1)
            {
                QuKuan();
                continue;
            }
            if(s1 == 2)
            {
                CunKuan();
                continue;
            }
            if(s1 == 3)
            {
                ZhuanZhang();
                continue;
            }
            if(s1 == 4)
            {
                System.out.println("请输入新密码：");
                String str = in.next();
                updataMima(str);
                continue;
            }
            if(s1 == 5)
            {
                showMoney();
                continue;
            }
            else
            {
                p = false;
                System.out.println("已退出！");
            }
        }
        }
        
        else
        {
            System.out.println("输入错误！");
        }
    }
}