#Error: Incompatible types

18 messages · Page 1 of 1 (latest)

carmine coveBOT
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tidal gust
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is Item a generic?

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oh you're trying to assign an array into the ArrayBag directly

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you need to construct the ArrayBag

light bramble
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is there a way to assign the array without constructing arraybag

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here's what im given:

public static final class ArrayBag<T>  {
    private T[] contents;
    private static final int MAX = 25;
    private int numberOfEntries;

    @SuppressWarnings("unchecked")
    public ArrayBag() {
        T[] tempBag = (T[])new Object[MAX];
        contents = tempBag;
        numberOfEntries = 0;
    }

    public ArrayBag(int desiredCapacity) {
        @SuppressWarnings("unchecked")
        // Unchecked cast
        T[] tempBag = (T[])new Object[desiredCapacity];
        contents = tempBag;
        numberOfEntries = 0;
    } // end constructor

    public boolean isEmpty() {
        return getCurrentSize() == 0;
    }

    public boolean add(T anEntry) {
        if (anEntry == null) {
            return false;
        }
        if (numberOfEntries < contents.length) {
            contents[numberOfEntries] = anEntry;
            numberOfEntries++;
            return true;
        }
        else {
            return false;
        }
    }
  }


public static class Item{
    private String name;
    private double price;
    private boolean onSale;

    public Item(String n, double p, boolean sale) {
        name = n;
        price = p;
        onSale = sale;
    }

    public String getName() {
        return name;
    }

    public double getPrice() {
        return price;
    }

    public boolean getOnSale() {
        return onSale;
    }

but I can't access any of the code directly

tidal gust
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because ArrayBag is not an array

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you can't get an instance of any object without constructing it

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that's how objects are created

light bramble
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dumb question, but how would i construct it inside this method:

public ArrayBag<Item> addSaleItems(Item[] items){

because thats the only place where i can put my code..

tidal gust
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new ArrayBag(items.length) or just new ArrayBag(), up to you

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those are the 2 constructors available

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ah no way it doesn't have extensions

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so just the former

light bramble
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Got it, thanks