HtmlUnit Class Problem

[Sarmad.as]

first of all sorry for bad english
i put the following code in button
final WebClient webClient = new WebClient();
but when i press the button i got the following error
I'm using linux lubuntu
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: org/w3c/dom/ElementTraversal
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java :760)
at java.security.SecureClassLoader.defineClass(Secure ClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader .java:455)
at java.net.URLClassLoader.access$100(URLClassLoader. java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java: 367)
at java.net.URLClassLoader$1.run(URLClassLoader.java: 361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:4 24)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 57)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java :760)
at java.security.SecureClassLoader.defineClass(Secure ClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader .java:455)
at java.net.URLClassLoader.access$100(URLClassLoader. java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java: 367)
at java.net.URLClassLoader$1.run(URLClassLoader.java: 361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:4 24)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 57)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java :760)
at java.security.SecureClassLoader.defineClass(Secure ClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader .java:455)
at java.net.URLClassLoader.access$100(URLClassLoader. java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java: 367)
at java.net.URLClassLoader$1.run(URLClassLoader.java: 361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:4 24)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 57)
at vist4earn.Login.jButton1ActionPerformed(Login.java :89)
at vist4earn.Login.access$000(Login.java:21)
at vist4earn.Login$1.actionPerformed(Login.java:45)
at javax.swing.AbstractButton.fireActionPerformed(Abs tractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed (AbstractButton.java:2346)
at javax.swing.DefaultButtonModel.fireActionPerformed (DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultB uttonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseRe leased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.jav a:6527)
at javax.swing.JComponent.processMouseEvent(JComponen t.java:3321)
at java.awt.Component.processEvent(Component.java:629 2)
at java.awt.Container.processEvent(Container.java:223 4)
at java.awt.Component.dispatchEventImpl(Component.jav a:4883)
at java.awt.Container.dispatchEventImpl(Container.jav a:2292)
at java.awt.Component.dispatchEvent(Component.java:47 05)
at java.awt.LightweightDispatcher.retargetMouseEvent( Container.java:4898)
at java.awt.LightweightDispatcher.processMouseEvent(C ontainer.java:4533)
at java.awt.LightweightDispatcher.dispatchEvent(Conta iner.java:4462)
at java.awt.Container.dispatchEventImpl(Container.jav a:2278)
at java.awt.Window.dispatchEventImpl(Window.java:2739 )
at java.awt.Component.dispatchEvent(Component.java:47 05)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.j ava:746)
at java.awt.EventQueue.access$400(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:697)
at java.awt.EventQueue$3.run(EventQueue.java:691)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPri vilege(ProtectionDomain.java:75)
at java.security.ProtectionDomain$1.doIntersectionPri vilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:719)
at java.awt.EventQueue$4.run(EventQueue.java:717)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPri vilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java: 716)
at java.awt.EventDispatchThread.pumpOneEventForFilter s(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(E ventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarch y(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThre ad.java:82)
Caused by: java.lang.ClassNotFoundException: org.w3c.dom.ElementTraversal
at java.net.URLClassLoader$1.run(URLClassLoader.java: 372)
at java.net.URLClassLoader$1.run(URLClassLoader.java: 361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:4 24)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 57)
... 75 more
i'm stuck here for 2 days Don't know where is the problem . i set the permmissins for the lib file of html unit but nothing is working

[Tolls]

Presumably WebClient uses ElementTraversal somewhere, and you either have the wrong version on your classpath or you don't have it at all.

[Sarmad.as]

Presumably WebClient uses ElementTraversal somewhere, and you either have the wrong version on your classpath or you don't have it at all.

Thanks i was not using the dependency libs :)