ClassDef not found when creating standard game

Hey there, when I try and create a standard game i get this.  on line 19 the code is:



GameSettingsPanel.prompt(game.getSettings());



Exception in thread "main" java.lang.NoClassDefFoundError: [Lorg/lwjgl/opengl/DisplayMode;

at java.lang.Class.getDeclaredMethods0(Native Method)

at java.lang.Class.privateGetDeclaredMethods(Unknown Source)

at java.lang.Class.getDeclaredMethod(Unknown Source)

at java.awt.Component.isCoalesceEventsOverriden(Unknown Source)

at java.awt.Component.access$100(Unknown Source)

at java.awt.Component$2.run(Unknown Source)

at java.awt.Component$2.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

at java.awt.Component.checkCoalescing(Unknown Source)

at java.awt.Component.<init>(Unknown Source)

at java.awt.Container.<init>(Unknown Source)

at javax.swing.JComponent.<init>(Unknown Source)

at javax.swing.JPanel.<init>(Unknown Source)

at javax.swing.JPanel.<init>(Unknown Source)

at javax.swing.JPanel.<init>(Unknown Source)

at com.jmex.editors.swing.settings.GameSettingsPanel.<init>(Unknown Source)

at com.jmex.editors.swing.settings.GameSettingsPanel.prompt(Unknown Source)

at com.jmex.editors.swing.settings.GameSettingsPanel.prompt(Unknown Source)

at managment.BeyondRPG.main(BeyondRPG.java:19)



Thanks

You probably forgot to add the lwjgl.jar to the class path.

oops silly me, thanks for your help