Credit card shopping points

BusCard

import java.math.BigDecimal;

public class BusCard {
    
    /** *  The account balance  */
    BigDecimal money;

    /** *  Account name  */
    String name;

    public BusCard() {
    
        this.money = new BigDecimal(10000);
        this.name = " Business card ";
    }

    public BigDecimal getMoney() {
    
        return money;
    }

    public void setMoney(BigDecimal money) {
    
        this.money = money;
    }

    public String getName() {
    
        return name;
    }

    public void withdraw(BigDecimal newMoney) {
    
        this.money = this.money.subtract(newMoney).setScale(2, BigDecimal.ROUND_DOWN);
    }

    @Override
    public String toString() {
    
        return "[ Card type ]" + name + ";" + "[ Remaining amount ]" + money;
    }
}

PublicCard

import java.math.BigDecimal;

public class PublicCard extends BusCard{
    

    /** *  integral  */
    Integer score;

    /** *  Magnification  */
    Integer multiple;

    public PublicCard() {
    
        this.money = new BigDecimal(10000);
        this.name = " Pujinka ";
        this.score = 0;
        this.multiple = 1;
    }

    public Integer getScore() {
    
        return score;
    }

    public void setScore(Integer score) {
    
        this.score = score;
    }

    @Override
    public void withdraw(BigDecimal newMoney) {
    
        super.withdraw(newMoney);
        this.score += newMoney.setScale(0, BigDecimal.ROUND_UP).intValue() * multiple;
    }

    @Override
    public String toString() {
    
        return "[ Card type ]" + name + ";" + "[ Remaining amount ]" + money +"[ integral ]" + score;
    }
}

BlackCard

import java.math.BigDecimal;

public class BlackCard extends PublicCard{
    

    static final Integer a = Integer.MAX_VALUE;
    String[] rights = {
    };

    public BlackCard() {
    
        this.money = new BigDecimal(a.toString());
        this.name = " Black gold card ";
        this.score = 0;
        this.multiple = 100;
        this.rights = new String[]{
    " Airport VIP lounge ", " Domestic shuttle "};
    }

    public String[] getRights() {
    
        return rights;
    }

    @Override
    public void withdraw(BigDecimal newMoney) {
    
        super.withdraw(newMoney);
    }

    public String showArray(String[] s) {
    
        String str = "";
        for (int i = 0; i < s.length; i++) {
    
            str += s[i];
            if(i != s.length -1) {
    
                str += ",";
            }
        }
        return str;
    }

    @Override
    public String toString() {
    
        return "[ Card type ]" + name + ";" + "[ Remaining amount ]" + Double.valueOf(money.toString()) +"[ integral ]" + score  +"[ Equity ]" +
                showArray(rights);
    }
}

User

import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;

public class User {
    
    List<BusCard> list = new ArrayList<>();

    public void pay(BusCard busCard, BigDecimal money) {
    
        busCard.withdraw(money);
    }

    public void addCard(BusCard busCard) {
    
        list.add(busCard);
    }
}

Main

import java.math.BigDecimal;

public class Main {
    
    public static void main(String[] args) {
    
        BusCard busCard = new BusCard();
        PublicCard publicCard = new PublicCard();
        BlackCard blackCard = new BlackCard();
        User user = new User();
        user.addCard(busCard);
        user.addCard(publicCard);
        user.addCard(blackCard);

        System.out.println(Integer.MAX_VALUE);
        System.out.println(publicCard.toString());
        user.pay(publicCard, new BigDecimal(500.5));
        System.out.println(publicCard.toString());

        System.out.println(busCard.toString());
        user.pay(busCard, new BigDecimal(888.88));
        System.out.println(busCard.toString());

        System.out.println(blackCard.toString());
        user.pay(blackCard, new BigDecimal(101111));
        System.out.println(blackCard.toString());



    }
}