In our testing environment we are seeing this error sometimes...
java.lang.ClassCastException: org.eclipse.jdt.internal.core.ClassFile cannot be cast to org.eclipse.jdt.core.ICompilationUnit
at org.eclipse.wst.xml.search.editor.java.hyperlink.Java2XHyperLinkDetectetor.detectHyperlinks(Java2XHyperLinkDetectetor.java:46)
at org.eclipse.ui.texteditor.HyperlinkDetectorRegistry$HyperlinkDetectorDelegate.detectHyperlinks(HyperlinkDetectorRegistry.java:80)
at org.eclipse.jface.text.hyperlink.HyperlinkManager.findHyperlinks(HyperlinkManager.java:289)
at org.eclipse.jface.text.hyperlink.HyperlinkManager.findHyperlinks(HyperlinkManager.java:261)
at org.eclipse.jface.text.hyperlink.HyperlinkManager.mouseMove(HyperlinkManager.java:469)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:212)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4454)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1388)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3799)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3409)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
In our testing environment we are seeing this error sometimes...