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Open Project Properties/Add Module Dependency for first time on a new module project. Type "Lookup" in the text field. Realize that is going to get all sorts of false positives and you should change it to the more specific "AbstractLookup". While it's searching, press Home. Type the letter A just as it's about to return results for "Lookup". Looks like something needs to be synchronized that isn't. java.lang.ArrayStoreException at java.lang.System.arraycopy(Native Method) at org.netbeans.modules.apisupport.project.ui.customizer.AddModulePanel.getSelecte dDependencies(AddModulePanel.java:218) at org.netbeans.modules.apisupport.project.ui.customizer.AddModulePanel.showDescri ption(AddModulePanel.java:169) at org.netbeans.modules.apisupport.project.ui.customizer.AddModulePanel.access$100 (AddModulePanel.java:54) at org.netbeans.modules.apisupport.project.ui.customizer.AddModulePanel$1.valueCha nged(AddModulePanel.java:74) at javax.swing.JList.fireSelectionValueChanged(JList.java:1678) at javax.swing.JList$ListSelectionHandler.valueChanged(JList.java:1692) at javax.swing.DefaultListSelectionModel.fireValueChanged (DefaultListSelectionModel.java:187) at javax.swing.DefaultListSelectionModel.fireValueChanged (DefaultListSelectionModel.java:167) at javax.swing.DefaultListSelectionModel.fireValueChanged (DefaultListSelectionModel.java:214) at javax.swing.DefaultListSelectionModel.changeSelection (DefaultListSelectionModel.java:408) at javax.swing.DefaultListSelectionModel.changeSelection (DefaultListSelectionModel.java:417) at javax.swing.DefaultListSelectionModel.setSelectionInterval (DefaultListSelectionModel.java:441) at javax.swing.JList.setSelectedIndex(JList.java:2093) at javax.swing.plaf.basic.BasicListUI$Actions.changeSelection (BasicListUI.java:2157) at javax.swing.plaf.basic.BasicListUI$Actions.actionPerformed (BasicListUI.java:1873) at org.netbeans.modules.apisupport.project.ui.customizer.AddModulePanel$3.actionPe rformed(AddModulePanel.java:131) at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1633) at javax.swing.JComponent.processKeyBinding(JComponent.java:2866) at javax.swing.JComponent.processKeyBindings(JComponent.java:2901) at javax.swing.JComponent.processKeyEvent(JComponent.java:2829) at java.awt.Component.processEvent(Component.java:5734) at java.awt.Container.processEvent(Container.java:1960) at java.awt.Component.dispatchEventImpl(Component.java:4365) at java.awt.Container.dispatchEventImpl(Container.java:2018) at java.awt.Component.dispatchEvent(Component.java:4195) at java.awt.KeyboardFocusManager.redispatchEvent (KeyboardFocusManager.java:1828) at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent (DefaultKeyboardFocusManager.java:693) at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent (DefaultKeyboardFocusManager.java:952) at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions (DefaultKeyboardFocusManager.java:824) at java.awt.DefaultKeyboardFocusManager.dispatchEvent (DefaultKeyboardFocusManager.java:657) at java.awt.Component.dispatchEventImpl(Component.java:4237) at java.awt.Container.dispatchEventImpl(Container.java:2018) at java.awt.Window.dispatchEventImpl(Window.java:2300) at java.awt.Component.dispatchEvent(Component.java:4195) [catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) at java.awt.EventDispatchThread.pumpOneEventForFilters (EventDispatchThread.java:273) at java.awt.EventDispatchThread.pumpEventsForFilter (EventDispatchThread.java:183) at java.awt.EventDispatchThread.pumpEventsForFilter (EventDispatchThread.java:177) at java.awt.Dialog$1.run(Dialog.java:1032) at java.awt.Dialog$2.run(Dialog.java:1078) at java.security.AccessController.doPrivileged(Native Method) at java.awt.Dialog.show(Dialog.java:1076) at org.netbeans.core.windows.services.NbPresenter.superShow (NbPresenter.java:813) at org.netbeans.core.windows.services.NbPresenter.doShow (NbPresenter.java:856) at org.netbeans.core.windows.services.NbPresenter.run (NbPresenter.java:844) at org.openide.util.Mutex.doEventAccess(Mutex.java:1172) at org.openide.util.Mutex.readAccess(Mutex.java:209) at org.netbeans.core.windows.services.NbPresenter.show (NbPresenter.java:829) at java.awt.Component.show(Component.java:1406) at java.awt.Component.setVisible(Component.java:1359) at java.awt.Window.setVisible(Window.java:695) at java.awt.Dialog.setVisible(Dialog.java:972) at org.netbeans.modules.apisupport.project.ui.customizer.CustomizerLibraries.addMo duleDependency(CustomizerLibraries.java:461) at org.netbeans.modules.apisupport.project.ui.customizer.CustomizerLibraries.acces s$400(CustomizerLibraries.java:45) at org.netbeans.modules.apisupport.project.ui.customizer.CustomizerLibraries$4.act ionPerformed(CustomizerLibraries.java:171) at javax.swing.AbstractButton.fireActionPerformed (AbstractButton.java:1957) at javax.swing.AbstractButton$Handler.actionPerformed (AbstractButton.java:2280) at javax.swing.DefaultButtonModel.fireActionPerformed (DefaultButtonModel.java:377) at javax.swing.DefaultButtonModel.setPressed (DefaultButtonModel.java:232) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased (BasicButtonListener.java:234) at java.awt.Component.processMouseEvent(Component.java:5957) at javax.swing.JComponent.processMouseEvent(JComponent.java:3282) at java.awt.Component.processEvent(Component.java:5722) at java.awt.Container.processEvent(Container.java:1960) at java.awt.Component.dispatchEventImpl(Component.java:4365) at java.awt.Container.dispatchEventImpl(Container.java:2018) at java.awt.Component.dispatchEvent(Component.java:4195) at java.awt.LightweightDispatcher.retargetMouseEvent (Container.java:4222) at java.awt.LightweightDispatcher.processMouseEvent (Container.java:3886) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3816) at java.awt.Container.dispatchEventImpl(Container.java:2004) at java.awt.Window.dispatchEventImpl(Window.java:2300) at java.awt.Component.dispatchEvent(Component.java:4195) at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) at java.awt.EventDispatchThread.pumpOneEventForFilters (EventDispatchThread.java:273) at java.awt.EventDispatchThread.pumpEventsForFilter (EventDispatchThread.java:183) at java.awt.EventDispatchThread.pumpEventsForHierarchy (EventDispatchThread.java:173) at java.awt.EventDispatchThread.pumpEvents (EventDispatchThread.java:168) at java.awt.EventDispatchThread.pumpEvents (EventDispatchThread.java:160) at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
Seems that I'll have to look at it soon. BTW you surely know that it is much easier to read stacktraces as attachments ;) *** This issue has been marked as a duplicate of 70700 ***
verified duplicate
Sorry, I usually only paste in stack traces if they're short, I didn't notice the length of this one.