java.lang.IllegalArgumentException: http://www.jarvana.com/jarvana/view/org/apache/pdfbox/pdfbox/1.6.0/pdfbox-1.6.0-javadoc.jar!/index.html is not a valid classpath entry; it must end with a slash.
   at org.netbeans.modules.java.classpath.SimplePathResourceImplementation.verify(SimplePathResourceImplementation.java:107)
   at org.netbeans.modules.java.classpath.SimplePathResourceImplementation.verify(SimplePathResourceImplementation.java:67)
   at org.netbeans.modules.java.classpath.SimplePathResourceImplementation.<init>(SimplePathResourceImplementation.java:125)
   at org.netbeans.spi.java.classpath.support.ClassPathSupport.createResource(ClassPathSupport.java:79)
   at org.netbeans.spi.java.classpath.support.ClassPathSupport.createClassPath(ClassPathSupport.java:153)
   at org.netbeans.modules.javadoc.search.JavadocRegistry.getDocRoots(JavadocRegistry.java:132)
   at org.netbeans.modules.javadoc.search.IndexBuilder.refreshIndex(IndexBuilder.java:205)
   at org.netbeans.modules.javadoc.search.IndexBuilder.run(IndexBuilder.java:132)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1411)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1991)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.IllegalArgumentException: http://www.jarvana.com/jarvana/view/org/apache/pdfbox/pdfbox/1.6.0/pdfbox-1.6.0-javadoc.jar!/index.html is not a valid classpath entry; it must end with a slash.
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1452)
   at org.netbeans.modules.javadoc.search.IndexBuilder.scheduleTask(IndexBuilder.java:317)
   at org.netbeans.modules.javadoc.search.IndexBuilder.getDefault(IndexBuilder.java:126)
   at org.netbeans.modules.javadoc.search.IndexOverviewAction$IndexMenu.getPopupMenu2(IndexOverviewAction.java:145)
   at org.netbeans.modules.javadoc.search.IndexOverviewAction$IndexMenu$1.stateChanged(IndexOverviewAction.java:118)
   at javax.swing.DefaultButtonModel.fireStateChanged(DefaultButtonModel.java:349)
   at javax.swing.DefaultButtonModel.setSelected(DefaultButtonModel.java:232)
   at javax.swing.JMenu.setSelected(JMenu.java:311)
   at javax.swing.JMenu.menuSelectionChanged(JMenu.java:1190)
   at javax.swing.MenuSelectionManager.setSelectedPath(MenuSelectionManager.java:118)
   at javax.swing.plaf.basic.BasicMenuUI$Handler.mouseEntered(BasicMenuUI.java:511)
   at javax.swing.plaf.basic.BasicMenuUI$MouseInputHandler.mouseEntered(BasicMenuUI.java:364)
   at com.sun.java.swing.plaf.windows.WindowsMenuUI$WindowsMouseInputHandler.mouseEntered(WindowsMenuUI.java:255)
   at java.awt.Component.processMouseEvent(Component.java:6513)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
   at java.awt.Component.processEvent(Component.java:6269)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4860)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4686)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4832)
   at java.awt.LightweightDispatcher.trackMouseEnterExit(LightweightDispatcher.java:4620)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4474)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4422)
   at java.awt.Container.dispatchEventImpl(Container.java:2273)
   at java.awt.Window.dispatchEventImpl(Window.java:2713)
   at java.awt.Component.dispatchEvent(Component.java:4686)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707)
   at java.awt.EventQueue.access$000(EventQueue.java:101)
   at java.awt.EventQueue$3.run(EventQueue.java:666)
   at java.awt.EventQueue$3.run(EventQueue.java:664)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:680)
   at java.awt.EventQueue$4.run(EventQueue.java:678)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:677)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:162)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)