[FIXED] Run error [FIXED]

import com.jme.app.*;
import com.jme.bounding.BoundingBox;
import com.jme.image.Texture;
import com.jme.input.KeyBindingManager;
import com.jme.input.KeyInput;
import com.jme.math.Vector3f;
import com.jme.renderer.Camera;
import com.jme.renderer.ColorRGBA;
import com.jme.scene.Node;
import com.jme.scene.shape.Sphere;
import com.jme.scene.state.TextureState;
import com.jme.system.DisplaySystem;
import com.jme.system.JmeException;
import com.jme.util.TextureManager;
import com.jme.util.Timer;

public class Syphasias extends BaseGame {
   public static void main(String[] args) {
      Syphasias app = new Syphasias();
      private int width, height, depth, freq;
      private boolean fullscreen;
      private Camera cam;
      protected Timer timer;
      protected void update(float interpolation) {
       interpolation = timer.getTimePerFrame();
       //if escape was pressed, we exit
       if (KeyBindingManager.getKeyBindingManager().isValidCommand("exit")) {
          finished = true;
   protected void render(float interpolation) {
       //Clear the screen

   protected void initSystem() {
   protected void initGame() {
      scene = new Node("Scene graph node"); //Create our Sphere
      Sphere s = new Sphere("Sphere", 30, 30, 25);
      s.setLocalTranslation(new Vector3f(0, 0, -40));
      s.setModelBound(new BoundingBox());
      ts = display.getRenderer().createTextureState();
               getClassLoader().getResource("FlagRush.png"), Texture.MinificationFilter.BilinearNearestMipMap, Texture.MagnificationFilter.Bilinear));
      //update the scene graph for rendering
      scene.updateGeometricState(0.0f, true);
      //store the properties information
      width = this.settings.getWidth();
      height = this.settings.getHeight();
      depth = this.settings.getDepth();
      freq = this.settings.getFrequency();
      fullscreen = this.settings.isFullscreen();
      try {
         display = DisplaySystem.getDisplaySystem(this.getNewSettings().getRenderer());
         display.createWindow(width, height, depth, freq, fullscreen);
         cam = display.getRenderer().createCamera(width, height);
      } catch (JmeException e) {
      //set the background to black
      //initialize the camera
      cam.setFrustumPerspective(45.0f, (float)width / (float)height, 1, 1000);
      Vector3f loc = new Vector3f(0.0f, 0.0f, 25.0f);
      Vector3f left = new Vector3f(-1.0f, 0.0f, 0.0f);
      Vector3f up = new Vector3f(0.0f, 1.0f, 0.0f);
      Vector3f dir = new Vector3f(0.0f, 0f, -1.0f);
      // Move our camera to a correct place and orientation.
      cam.setFrame(loc, left, up, dir);
      /** Signal that we've changed our camera's location/frustum. */
      /** Get a high resolution timer for FPS updates. */
                timer = Timer.getTimer();
   //the root node of the scene graph
   private Node scene;
   //TextureState to show the monkey on the sphere.
   private TextureState ts;
   protected void reinit() {
       display.recreateWindow(width, height, depth, freq, fullscreen);

   protected void cleanup() {


That is the code, but I get this error while trying to run it:

Jan 13, 2009 3:56:36 PM com.jme.app.BaseGame start
INFO: Application started.
Jan 13, 2009 3:56:36 PM com.jme.system.PropertiesGameSettings <init>
INFO: PropertiesGameSettings created
Jan 13, 2009 3:56:36 PM com.jme.system.PropertiesGameSettings load
INFO: Read properties
Jan 13, 2009 3:56:45 PM com.jme.system.PropertiesGameSettings save
INFO: Saved properties
Jan 13, 2009 3:56:45 PM com.jme.app.AbstractGame assertDisplayCreated
SEVERE: Display system is null.
Jan 13, 2009 3:56:45 PM class Syphasias start()
SEVERE: Exception in game loop
com.jme.system.JmeException: Window must be created during initialization.
   at com.jme.app.AbstractGame.assertDisplayCreated(AbstractGame.java:142)
   at com.jme.app.BaseGame.start(BaseGame.java:72)
   at Syphasias.main(Syphasias.java:24)
Exception in thread "main" java.lang.NullPointerException
   at Syphasias.cleanup(Syphasias.java:119)
   at com.jme.app.BaseGame.start(BaseGame.java:102)
   at Syphasias.main(Syphasias.java:24)

It's suppose to show the sphere, or at least that is what the tutorial says, after the logo.

:D Fixed. The code is correct, but the properties wasn't.

Welcome to the forums and nice job helping yourself :slight_smile: