public void initialize() {

    // openLevelFile images:
    try {
      boxSpriteSheet = ImageIO.read(new File("ItemContainer.png"));
      coinSpriteSheet = ImageIO.read(new File("Coin.png"));
    } catch (Exception e) {
    }

    if (openLevelFile == false) {
      try {
        loadLevel(initLevel);
      } catch (Exception e) {
        System.out.println(e);
      }
    } else {
      loadLevel(FileOpenDialog("Open ..."));
    }

    // create tile layer:
    renderTileLayer();

    // create bg layer:
    backgroundLayer = new VolatileImage[backgroundImage.length];

    // render layer:
    for (int i = 0; i < backgroundImage.length; i++) {
      renderBackgroundLayer(0);
      renderBackgroundLayer(1);
    }

    // create hardware accellerated rendering layer:
    renderImage =
        this.getGraphicsConfiguration()
            .createCompatibleVolatileImage(
                loadedLevel.getWidth() * 16,
                loadedLevel.getHeight() * 16,
                Transparency.TRANSLUCENT);
    Graphics2D g2d = renderImage.createGraphics();
    g2d.setComposite(AlphaComposite.Src);

    // Clear the image.
    g2d.setColor(new Color(0, 0, 0, 0));
    g2d.fillRect(0, 0, renderImage.getWidth(), renderImage.getHeight());
    g2d.setBackground(new Color(0, 0, 0, 0));
  }
  public static void loadLevel(File levelFile) {

    // clean up old loads:
    loadedLevel.clean();

    if (levelFile != null) {
      GameObject[] go = new GameObject[0];

      try {
        loadedLevel = new Level(levelFile.getPath());
        camera = loadedLevel.getCamera();
        go = loadedLevel.getGameObjects();
      } catch (Exception e) {
        System.out.println(e);
      }

      // Reset numberOf ...
      numberOfBoxes = 0;
      numberOfSprites = 0;
      numberOfTiles = 0;

      for (int i = 0; i < actor.length; i++) {
        actor[i] = null;
      }

      backgroundImage = new Image[2];

      try {
        tileSheet = ImageIO.read(new File(loadedLevel.levelName + "/tilesheet.png"));
        backgroundImage[0] = ImageIO.read(new File(loadedLevel.levelName + "/bg0.png"));
        backgroundImage[1] = ImageIO.read(new File(loadedLevel.levelName + "/bg1.png"));
      } catch (Exception e) {
        System.out.println("ERROR loading images: " + e);
      }

      int MapWidth = loadedLevel.getWidth();
      int MapHeight = loadedLevel.getHeight();

      for (int y = 0; y < MapHeight; y++) {
        for (int x = 0; x < MapWidth; x++) {
          // Number entered in the position represents tileNumber;
          // position of the sprite x*16, y*16

          // get char at position X/Y in the levelLoaded string
          char CharAtXY =
              loadedLevel.level.substring(MapWidth * y, loadedLevel.level.length()).charAt(x);

          // Load objects into the engine/game
          for (int i = 0; i < go.length; i++) {
            if (CharAtXY == go[i].objectChar) {
              try {
                invoke(
                    "game.objects." + go[i].name,
                    "new" + go[i].name,
                    new Class[] {Point.class},
                    new Object[] {new Point(x * 16, y * 16)});
              } catch (Exception e) {
                System.out.println("ERROR trying to invoke method: " + e);
              }
            }
          }

          // Load tiles into engine/game
          // 48 = '0' , 57 = '9'
          if ((int) CharAtXY >= 48 && (int) CharAtXY <= 57) {
            tileObject[gameMain.numberOfTiles] = new WorldTile(Integer.parseInt(CharAtXY + ""));
            tileObject[gameMain.numberOfTiles - 1].sprite.setPosition(x * 16, y * 16);
          }
        }
      }

      // clean up:
      loadedLevel.clean();

      // additional game-specific loading options:
      camera.forceSetPosition(new Point(mario.spawn.x, camera.prefHeight));
      pCoin = new PopupCoin(new Point(-80, -80));

      levelLoaded = true;
    } else {
      System.out.println("Loading cancelled...");
    }
  }