where to get help with errors, please?

Hi, new - where do I get help with errors onload?
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please email me the answer, PLZ??
mail4barney@gmail.com
Thanks
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Alice version: 2.2 09/10/2010Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException at javax.swing.LayoutComparator.compare(Unknown Source) at java.util.Arrays.mergeSort(Unknown Source) at java.util.Arrays.sort(Unknown Source) at java.util.Collections.sort(Unknown Source) at javax.swing.SortingFocusTraversalPolicy.enumerateA ndSortCycle(Unknown Source) at javax.swing.SortingFocusTraversalPolicy.getFirstCo mponent(Unknown Source) at javax.swing.LayoutFocusTraversalPolicy.getFirstCom ponent(Unknown Source) at javax.swing.SortingFocusTraversalPolicy.getDefault Component(Unknown Source) at java.awt.FocusTraversalPolicy.getInitialComponent( Unknown Source) at java.awt.DefaultKeyboardFocusManager.dispatchEvent (Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Window.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.SequencedEvent.dispatch(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilter s(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(U nknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarch y(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source)