JESS: NoClassDefFoundError: jess/JessException

[Vanmoerkerke Frederik]

Hello,   I want to try running an applet. The compiling has no problem but when i try to run it in Internet Explorer as an applet, it gives me the following error.   java.lang.NoClassDefFoundError: jess/JessException  at java.lang.Class.getDeclaredConstructors0(Native Method)  at java.lang.Class.privateGetDeclaredConstructors(Class.java:1576)  at java.lang.Class.getConstructor0(Class.java:1748)  at java.lang.Class.newInstance0(Class.java:266)  at java.lang.Class.newInstance(Class.java:249)  at sun.applet.AppletPanel.createApplet(AppletPanel.java:548)  at sun.plugin.AppletViewer.createApplet(AppletViewer.java:1621)  at sun.applet.AppletPanel.runLoader(AppletPanel.java:477)  at sun.applet.AppletPanel.run(AppletPanel.java:290)  at java.lang.Thread.run(Thread.java:536) I've already set the classpath good because everything else for jess works.   Here is a small example of an applet that doesn't want to run on my computer   import jess.*; import java.awt.*; import java.applet.*;   public class Applet1 extends Applet {  public void init()  {   try{    Rete engine = new Rete();    engine.executeCommand("(reset)");   }   catch (JessException je) {}  } }   Vanmoerkerke Frederik