I'm new to processing and I was doing some tutorials. First of all, I must say that I'm enjoying this but I'm having some problems. I'm running processing through Netbeans programming Java (I've imported the core.jar library). Everytime I try to use P2D and P3D it gives me an error:

2. java.lang.NoClassDefFoundError: javax/media/opengl/GLException
3. at processing.opengl.PGraphicsOpenGL.<init>(PGraphicsOpenGL.java:471)
4. at processing.opengl.PGraphics2D.<init>(PGraphics2D.java:39)
5. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
6. at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
7. at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
8. at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
9. at processing.core.PApplet.makeGraphics(PApplet.java:1736)
10. at processing.core.PApplet.size(PApplet.java:1588)
11. at processing.core.PApplet.size(PApplet.java:1559)
12. at processingexamples.Example1.setup(Example1.java:11)
13. at processing.core.PApplet.handleDraw(PApplet.java:2103)
14. at processing.core.PGraphicsJava2D.requestDraw(PGraphicsJava2D.java:190)
15. at processing.core.PApplet.run(PApplet.java:2006)
16. at java.lang.Thread.run(Thread.java:662)
17. Caused by: java.lang.ClassNotFoundException: javax.media.opengl.GLException
18. at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
19. at java.security.AccessController.doPrivileged(Native Method)
20. at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
21. at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
22. at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
23. at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
24. ... 14 more
25. Exception in thread "Animation Thread" java.lang.RuntimeException: javax/media/opengl/GLException
26. at processing.core.PApplet.makeGraphics(PApplet.java:1761)
27. at processing.core.PApplet.size(PApplet.java:1588)
28. at processing.core.PApplet.size(PApplet.java:1559)
29. at processingexamples.Example1.setup(Example1.java:11)
30. at processing.core.PApplet.handleDraw(PApplet.java:2103)
31. at processing.core.PGraphicsJava2D.requestDraw(PGraphicsJava2D.java:190)
32. at processing.core.PApplet.run(PApplet.java:2006)
33. at java.lang.Thread.run(Thread.java:662)

I've already tried to do the same in processing interface but it gives me the same error. I'm trying to run a simple program, but even If I only use setup with P2D or P3D it gives me an error.

Can someone help?

Thanks.