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 SpringSource Issue Tracker by Tushar Kapila, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at org.eclipse.wst.json.ui.internal.preferences.JSONValidatorPreferencePage.shouldRevalidateOnSettingsChange(JSONValidatorPreferencePage.java:371)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.okPressed(FilteredPreferenceDialog.java:409)
at org.eclipse.jface.preference.PreferenceDialog.buttonPressed(PreferenceDialog.java:230)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:249)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5219)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4553)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:818)
at org.eclipse.ui.internal.OpenPreferencesAction.run(OpenPreferencesAction.java:63)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:473)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:565)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5219)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4553)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:670)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:609)
at org.eclipse.equinox.launcher.Main.run(Main.java:1516)

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.