Question

Java Programing: Please help with the following assignment. Thank you.

1. Use the GiftExchange class you created in the previous question.
2. Complete the code below for the SecretSanta class .
3. Assume the Gift class is available and the constructor and toString method are working properly
4. Create a GiftExchange object.
5. Add each of the Gift object to the GiftExchange object.
6. Use the GiftExchange object to print all the Gifts in that object.
7. Ask the GiftExchange object to provide you with a random gift and print that gift's information.

The starter code for your answer, copy this into your answer and complete.

public static void main(String args[])
{
Gift truck = new Toy("Dump Truck",20.99);
Gift dress = new Clothing("Sun Dress", 42.86);
Gift oven = new Applance("KitchenAid Oven", 1298.89);

Answer 1

import java.util.ArrayList;
import java.util.Random;

class GiftExchange<T>{
    ArrayList<T> gifts;
    GiftExchange(){
        gifts = new ArrayList<>();
    }
    public void add(T gift){
        gifts.add(gift);
    }
    public T drawGift(){
        if(gifts.isEmpty()){
            return null;
        }
        Random r = new Random();
        int ind = r.nextInt(gifts.size());
        T ans = gifts.remove(ind);
        return ans;
    }

    @Override
    public String toString(){
        String ans = "Gifts : ";
        for(T t : gifts){
            ans = ans+t+" ";
        }
        return ans;
    }
}
class Gift{
    String name;
    double price;

    public Gift(String name, double price) {
        this.name = name;
        this.price = price;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }

    public String toString(){
        return "["+name+" : "+price+"]";
    }
}

class Toy extends Gift{

    public Toy(String name, double price) {
        super(name, price);
    }

    
}

class Clothing extends Gift{

    public Clothing(String name, double price) {
        super(name, price);
    }
}

class Appliance extends Gift{

    public Appliance(String name, double price) {
        super(name, price);
    }
}
class Main{
    public static void main(String[] args) {
        GiftExchange<Gift> cards = new GiftExchange<Gift>();

        Gift truck = new Toy("Dump Truck",20.99);
        Gift dress = new Clothing("Sun Dress", 42.86);
        Gift oven = new Appliance("KitchenAid Oven", 1298.89);

        cards.add(truck);
        cards.add(dress);
        cards.add(oven);

        System.out.println(cards);
        System.out.println("Gift drawn : "+cards.drawGift());
    }
}

OUTPUT :