ImageLibrary.java

public enum ImageLibrary {
    
    INFANTRY_SPRITE("infantry.png"),
    TANK_SPRITE("tank.png");
    
    BufferedImage img;
    
    ImageLibrary(String filepath) {
        try {
            img = ImageIO.read(new File(filepath));
        } catch (IOException e) {
            throw new RuntimeException("Could not load a file: " + e);
        }
    }
    
    public BufferedImage getImage() {
        return img;
    }
}