NullPointerException when trying to use field array as an argument

Question

So I'm trying to test to see if my deckOfCards Array is going to print out properly. Here is the code

public class Deck {
    private static final String face[] = {"Ace", "Two", "Three", "Four", "Five", "Six", "Seven", 
                                            "Eight", "Nine", "Ten", "Jack", "Queen", "King"};
    private static final String suit[] = {"Spade", "Club", "Diamond", "Heart"};
    private static final Card deckOfCards[] = new Card [52];

    public Deck(){
        int suitCount = 0;
        int faceCount = 0;
        int faceValue = 0;
        for(int i = 1; i < deckOfCards.length; i++){
            deckOfCards[i].setSuit(suit[suitCount]);
            deckOfCards[i].setFace(face[faceCount], faceValue);
            suitCount++;
            faceCount++;
            faceValue++;
            if(suitCount == 3){
                suitCount = 0;
            }
            if(faceCount == 12){
                faceCount = 0;
            }
            if(faceValue == 13){
                faceValue = 1;
            }
        }
    }

As you can see I've defined the face and suit in an array, and I want to assign them to their proper value, however when I try to run it, I get a nullPointerException at the line deckOfCards[i].setSuit(suit[suitCount]);

I cannot seem to figure out why it giving me this error, when I debug it, it seems to initialize all the fields, yet when it gets there it crashes.

score 2 · Accepted Answer · answered Dec 10 '16 at 00:34

2

You initialize the array, but not the elements in it. You can do that in the loop:

deckOfCards[i] = new Card();
deckOfCards[i].setSuit(suit[suitCount]);

answered Dec 10 '16 at 00:34

C. L.

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NullPointerException when trying to use field array as an argument

1 Answers1