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In the New Project... wizard, select Java Project with Existing Sources and click Next. Now, click Finish (*not* Next -- meaning that the source folders are still unspecified). You get the following exception: java.lang.reflect.UndeclaredThrowableException at $Proxy14.actionPerformed(Unknown Source) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234) at java.awt.Component.processMouseEvent(Component.java:5488) at javax.swing.JComponent.processMouseEvent(JComponent.java:3093) at java.awt.Component.processEvent(Component.java:5253) at java.awt.Container.processEvent(Container.java:1966) at java.awt.Component.dispatchEventImpl(Component.java:3955) at java.awt.Container.dispatchEventImpl(Container.java:2024) at java.awt.Component.dispatchEvent(Component.java:3803) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822) at java.awt.Container.dispatchEventImpl(Container.java:2010) at java.awt.Window.dispatchEventImpl(Window.java:1766) at java.awt.Component.dispatchEvent(Component.java:3803) at java.awt.EventQueue.dispatchEvent(EventQueue.java:463) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:153) at java.awt.Dialog$1.run(Dialog.java:515) at java.awt.Dialog.show(Dialog.java:536) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:800) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:843) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:831) at org.openide.util.Mutex$1.run(Mutex.java:1058) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199) at java.awt.EventQueue.dispatchEvent(EventQueue.java:461) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149) at java.awt.EventDispatchThread.run(EventDispatchThread.java:110) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:383) ... 36 more Caused by: java.lang.NullPointerException at org.netbeans.modules.java.j2seproject.J2SEProjectGenerator$1.run(J2SEProjectGenerator.java:88) at org.openide.util.Mutex.writeAccess(Mutex.java:310) at org.netbeans.modules.java.j2seproject.J2SEProjectGenerator.createProject(J2SEProjectGenerator.java:78) at org.netbeans.modules.java.j2seproject.ui.wizards.NewJ2SEProjectWizardIterator.instantiate(NewJ2SEProjectWizardIterator.java:109) at org.openide.loaders.TemplateWizard$Brigde2Iterator.instantiate(TemplateWizard.java:969) at org.openide.loaders.TemplateWizard.handleInstantiate(TemplateWizard.java:557) at org.openide.loaders.TemplateWizard.instantiateNewObjects(TemplateWizard.java:396) at org.openide.loaders.TemplateWizardIterImpl.instantiate(TemplateWizardIterImpl.java:218) at org.openide.WizardDescriptor.callInstantiate(WizardDescriptor.java:1425) at org.openide.WizardDescriptor.access$900(WizardDescriptor.java:63) at org.openide.WizardDescriptor$Listener.actionPerformed(WizardDescriptor.java:1327) [catch] ... 41 more ==> java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:383) at $Proxy14.actionPerformed(Unknown Source) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234) at java.awt.Component.processMouseEvent(Component.java:5488) at javax.swing.JComponent.processMouseEvent(JComponent.java:3093) at java.awt.Component.processEvent(Component.java:5253) at java.awt.Container.processEvent(Container.java:1966) at java.awt.Component.dispatchEventImpl(Component.java:3955) at java.awt.Container.dispatchEventImpl(Container.java:2024) at java.awt.Component.dispatchEvent(Component.java:3803) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822) at java.awt.Container.dispatchEventImpl(Container.java:2010) at java.awt.Window.dispatchEventImpl(Window.java:1766) at java.awt.Component.dispatchEvent(Component.java:3803) at java.awt.EventQueue.dispatchEvent(EventQueue.java:463) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:153) at java.awt.Dialog$1.run(Dialog.java:515) at java.awt.Dialog.show(Dialog.java:536) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:800) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:843) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:831) at org.openide.util.Mutex$1.run(Mutex.java:1058) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199) at java.awt.EventQueue.dispatchEvent(EventQueue.java:461) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149) at java.awt.EventDispatchThread.run(EventDispatchThread.java:110) Caused by: java.lang.NullPointerException at org.netbeans.modules.java.j2seproject.J2SEProjectGenerator$1.run(J2SEProjectGenerator.java:88) at org.openide.util.Mutex.writeAccess(Mutex.java:310) at org.netbeans.modules.java.j2seproject.J2SEProjectGenerator.createProject(J2SEProjectGenerator.java:78) at org.netbeans.modules.java.j2seproject.ui.wizards.NewJ2SEProjectWizardIterator.instantiate(NewJ2SEProjectWizardIterator.java:109) at org.openide.loaders.TemplateWizard$Brigde2Iterator.instantiate(TemplateWizard.java:969) at org.openide.loaders.TemplateWizard.handleInstantiate(TemplateWizard.java:557) at org.openide.loaders.TemplateWizard.instantiateNewObjects(TemplateWizard.java:396) at org.openide.loaders.TemplateWizardIterImpl.instantiate(TemplateWizardIterImpl.java:218) at org.openide.WizardDescriptor.callInstantiate(WizardDescriptor.java:1425) at org.openide.WizardDescriptor.access$900(WizardDescriptor.java:63) at org.openide.WizardDescriptor$Listener.actionPerformed(WizardDescriptor.java:1327) [catch] ... 41 more ==> java.lang.NullPointerException at org.netbeans.modules.java.j2seproject.J2SEProjectGenerator$1.run(J2SEProjectGenerator.java:88) at org.openide.util.Mutex.writeAccess(Mutex.java:310) at org.netbeans.modules.java.j2seproject.J2SEProjectGenerator.createProject(J2SEProjectGenerator.java:78) at org.netbeans.modules.java.j2seproject.ui.wizards.NewJ2SEProjectWizardIterator.instantiate(NewJ2SEProjectWizardIterator.java:109) at org.openide.loaders.TemplateWizard$Brigde2Iterator.instantiate(TemplateWizard.java:969) at org.openide.loaders.TemplateWizard.handleInstantiate(TemplateWizard.java:557) at org.openide.loaders.TemplateWizard.instantiateNewObjects(TemplateWizard.java:396) at org.openide.loaders.TemplateWizardIterImpl.instantiate(TemplateWizardIterImpl.java:218) at org.openide.WizardDescriptor.callInstantiate(WizardDescriptor.java:1425) at org.openide.WizardDescriptor.access$900(WizardDescriptor.java:63) at org.openide.WizardDescriptor$Listener.actionPerformed(WizardDescriptor.java:1327) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:383) at $Proxy14.actionPerformed(Unknown Source) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234) at java.awt.Component.processMouseEvent(Component.java:5488) at javax.swing.JComponent.processMouseEvent(JComponent.java:3093) at java.awt.Component.processEvent(Component.java:5253) at java.awt.Container.processEvent(Container.java:1966) at java.awt.Component.dispatchEventImpl(Component.java:3955) at java.awt.Container.dispatchEventImpl(Container.java:2024) at java.awt.Component.dispatchEvent(Component.java:3803) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822) at java.awt.Container.dispatchEventImpl(Container.java:2010) at java.awt.Window.dispatchEventImpl(Window.java:1766) at java.awt.Component.dispatchEvent(Component.java:3803) at java.awt.EventQueue.dispatchEvent(EventQueue.java:463) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:153) at java.awt.Dialog$1.run(Dialog.java:515) at java.awt.Dialog.show(Dialog.java:536) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:800) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:843) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:831) at org.openide.util.Mutex$1.run(Mutex.java:1058) [catch] at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199) at java.awt.EventQueue.dispatchEvent(EventQueue.java:461) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149) at java.awt.EventDispatchThread.run(EventDispatchThread.java:110) The path I was using to try to create the project does not have a src subfolder -- in case that makes a difference. If I click on Next and select a source folder, everything works fine. Perhaps a simple fix would be to disable the Finish button for the second wizard screen.
This looks more serious than a P3. I've seen a report of the same problem from another user. ->P2
The J2SEProjectGenerator::createProject gets the null value of sourceFolders. The sources panel should init it even when no sources are defined.
Checking in j2seproject/src/org/netbeans/modules/java/j2seproject/ui/wizards/NewJ2SEProjectWizardIterator.java; /cvs/java/j2seproject/src/org/netbeans/modules/java/j2seproject/ui/wizards/NewJ2SEProjectWizardIterator.java,v <-- NewJ2SEProjectWizardIterator.java new revision: 1.28; previous revision: 1.27 done Checking in j2seproject/src/org/netbeans/modules/java/j2seproject/ui/wizards/PanelSourceFolders.java; /cvs/java/j2seproject/src/org/netbeans/modules/java/j2seproject/ui/wizards/PanelSourceFolders.java,v <-- PanelSourceFolders.java new revision: 1.41; previous revision: 1.40 done
*** Issue 63429 has been marked as a duplicate of this issue. ***