BundleException

[Marta Luna Serrano]

Hi everybody!!
I have programmed an applet, but when I open the applet from the browser. I
have this error in the Java Console:
java.lang.NoClassDefFoundError: org/osgi/framework/BundleException
    at java.lang.Class.getDeclaredConstructors0(Native Method)
    at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
    at java.lang.Class.getConstructor0(Unknown Source)
    at java.lang.Class.newInstance0(Unknown Source)
    at java.lang.Class.newInstance(Unknown Source)
    at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
    at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown
Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException:
org.osgi.framework.BundleException
    at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClassInternal(Unknown Source)
    ... 8 more
Could anyone help me?? Any idea??
Thanks in advanced