java.lang.NullPointerException: This exception has no message.

Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Appcelerator JIRA by Rity Upadhyaya, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at com.appcelerator.titanium.ui.LaunchAppToolbarContribution$ProjectExplorerSelectionListener.selectionChanged(LaunchAppToolbarContribution.java:108)
at org.eclipse.ui.internal.e4.compatibility.SelectionService.notifyPostSelectionListeners(SelectionService.java:182)
at org.eclipse.ui.internal.e4.compatibility.SelectionService.access$4(SelectionService.java:170)
at org.eclipse.ui.internal.e4.compatibility.SelectionService$2.selectionChanged(SelectionService.java:86)
at org.eclipse.e4.ui.internal.workbench.SelectionAggregator.notifyPostListeners(SelectionAggregator.java:154)
at org.eclipse.e4.ui.internal.workbench.SelectionAggregator.access$8(SelectionAggregator.java:151)
at org.eclipse.e4.core.contexts.RunAndTrack.runExternalCode(RunAndTrack.java:56)
at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:110)
at org.eclipse.e4.core.internal.contexts.EclipseContext.processScheduled(EclipseContext.java:334)
at org.eclipse.e4.core.internal.contexts.EclipseContext.set(EclipseContext.java:348)
at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart$3.selectionChanged(CompatibilityPart.java:128)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:886)
at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1251)
at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:262)
at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:256)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3976)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
at org.eclipse.swt.widgets.Display.applicationNextEventMatchingMask(Display.java:4918)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:221)
at org.eclipse.swt.widgets.Widget.mouseDownSuper(Widget.java:1101)
at org.eclipse.swt.widgets.Tree.mouseDownSuper(Tree.java:2047)
at org.eclipse.swt.widgets.Widget.mouseDown(Widget.java:1093)
at org.eclipse.swt.widgets.Control.mouseDown(Control.java:2563)
at org.eclipse.swt.widgets.Tree.mouseDown(Tree.java:2012)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:221)
at org.eclipse.swt.widgets.Widget.windowSendEvent(Widget.java:2104)
at org.eclipse.swt.widgets.Shell.windowSendEvent(Shell.java:2318)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
at org.eclipse.swt.widgets.Display.applicationSendEvent(Display.java:5057)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method)
at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(NSApplication.java:128)
at com.appcelerator.titanium.rcp.IDEApplication.start(IDEApplication.java:125)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
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:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)

Users with the same issue

You are the first who have seen this exception.

Write tip

Know the solutions? Share your knowledge to help other developers to debug faster.