Ep 86 spritesheet class

package com.solargames.silvenica.graphics;

import java.awt.image.BufferedImage;
import java.io.IOException;

import javax.imageio.ImageIO;

public class SpriteSheet {

    private String path;
    public final int SIZE;
    public final int WIDTH, HEIGHT;
    public int[] pixels;

    public static SpriteSheet tiles = new SpriteSheet("/textures/spritesheet.png", 256);
    public static SpriteSheet mage_projectile_fire = new SpriteSheet("/textures/projectiles/mageprojectiles.png", 48);
//  public static SpriteSheet mage_fire = new SpriteSheet("/textures/mage.png", 48);

    public static SpriteSheet player = new SpriteSheet("/textures/mage.png", 48, 48);
    public static SpriteSheet player_down = new SpriteSheet(player, 0, 0, 1, 3, 16); //problem occurs here

    public SpriteSheet(SpriteSheet sheet, int x, int y, int width, int height, int spriteSize) {
        int xx = x * spriteSize;
        int yy = y * spriteSize;
        int w = width * spriteSize;
        int h = height * spriteSize;
        if (width == height) SIZE = width;
        else SIZE = -1;
        WIDTH = w;
        HEIGHT = h;
        pixels = new int[w * h];
        for (int y0 = 0; y0 < h; y++) {
            int yp = yy + y0;
            for (int x0 = 0; x0 < w; x++) {
                int xp = xx + x0;
                pixels[x0 + y0 * w] = sheet.pixels[xp + yp * sheet.WIDTH];
            }
        }
        load();
    }

    public SpriteSheet(String path, int size) {
        this.path = path;
        SIZE = size;
        WIDTH = size;
        HEIGHT = size;
        pixels = new int[SIZE * SIZE];
        load();
    }


    public SpriteSheet(String path, int width, int height) {
        this.path = path;
        SIZE = -1;
        WIDTH = width;
        HEIGHT = height;
        pixels = new int[WIDTH * HEIGHT];
        load();
    }

    private void load() {
        try {
            BufferedImage image = ImageIO.read(SpriteSheet.class.getResource(path));
            int w = image.getWidth();
            int h = image.getHeight();
            image.getRGB(0, 0, w, h, pixels, 0, w);
        }catch (IOException e) {
            e.printStackTrace();
        }
    }


}