Game Creating
start constructor
inside if statement
player created
cards added
Exception in thread "Animation Thread" java.lang.NullPointerException
    at processing.core.PApplet.image(PApplet.java:12783)
    at blackjack.Image.displayCard(Image.java:15)
    at blackjack.ImageManager.displayImage(ImageManager.java:30)
    at blackjack.Deck.displaySmall(Deck.java:21)
    at blackjack.Player.displayHandSmall(Player.java:24)
    at blackjack.Game.display(Game.java:32)
    at blackjack.Blackjack.draw(Blackjack.java:33)
    at processing.core.PApplet.handleDraw(PApplet.java:2386)
    at processing.core.PGraphicsJava2D.requestDraw(PGraphicsJava2D.java:240)
    at processing.core.PApplet.run(PApplet.java:2256)
    at java.lang.Thread.run(Unknown Source)

package blackjack;


import processing.core.PApplet;
import processing.core.*;


public class Blackjack extends PApplet {

    PImage table;
    float tableW = (float) (917*1.52);
    float tableH = (float) (461*1.52);
    // normal image dimensions are 360W by 540H
    float zoomCardW = 270;
    float zoomCardH = 405;
    float smallCardW = (float) (360/4);
    float smallCardH = (float) (540/4);
    String numPlayers = "";
    Game game;

    public void setup() {
        size(1400, 900);
        background(255);
        fill(0);
        textSize(44);
        text("Welcome to the Blackjack table!\nEnter the number of players (1, 2, or 3):", 200, 200);
        table = loadImage("blackjack_table.png");
        ImageManager.getInstance();
    }

    public void draw() {
        if (game != null) {
            game.display();
        }
    }

    public void keyPressed() {
        println("Game Creating");
        game = new Game(1);
    }

    public void mousePressed() {
        if (mouseX > 1000 && mouseY > 800) {
            game = null;
        }
    }
}



package blackjack;

import processing.core.PApplet;
import processing.core.*;

public class Game extends PApplet {
    private int numPlayers;
    private Player[] players;

    public Game(int gNumPlayers) {
        println("start constructor");
        numPlayers = gNumPlayers;
        players = new Player[numPlayers+1];
        players[0] = new Player(660, 100);
        if (numPlayers == 1) {
            println("inside if statement");
            players[1] = new Player(660, 500);
            println("player created");
            players[1].addCard("diamonds", "J");
            players[1].addCard("spades", "Q");
            println("cards added");
        } else {
            fill(0);
            textSize(45);
            text("DERP! Please click restart, AKA the bottom bit.", 60, 60);
        }
    }

    public void display() {
        //background(255);
        for (int i=0; i<players.length; i++) {
            players[i].displayHandSmall();
        }
    }
}




package blackjack;

public class ImageManager {
    private static ImageManager instance;
    private static Image[] cards;

    private ImageManager() {
        this.cards = new Image[52];
        String[] suits = {"clubs", "diamonds", "hearts", "spades"};
        String[] ids = {"2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A"};
        int index = 0;

        for (int i=0; i<4; i++) {
            for (int j=0; j<13; j++) {
                this.cards[index] = new Image(ids[j] + "-" + suits[i] + ".png");
                index++;
            }
        }
    }

    public static ImageManager getInstance() {
        if (instance == null) {
            instance = new ImageManager();
        }

        return instance;
    }

    public void displayImage(int card, int x, int y, int w, int h) {
        this.cards[card].displayCard(x, y, w, h);
    }
}




package blackjack;

import processing.core.PImage;
import processing.core.PApplet;

public class Image extends PApplet{

    PImage image;

    public Image (String path) {
        image = loadImage(path);
    }

    public void displayCard(int x, int y, int w, int h) {
        image(image, x, y, w, h);
    }
}