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 GitHub by NumberFourAG
, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at eu.numberfour.n4js.validation.validators.N4JSAccessModifierValidator.polyfilledOrOwnCtor(N4JSAccessModifierValidator.java:614)
at eu.numberfour.n4js.validation.validators.N4JSAccessModifierValidator.filterFieldsInitializedViaSpecConstructor(N4JSAccessModifierValidator.java:505)
at eu.numberfour.n4js.validation.validators.N4JSAccessModifierValidator.checkFieldFinalInitialization(N4JSAccessModifierValidator.java:470)
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:497)
at org.eclipse.xtext.validation.AbstractDeclarativeValidator$MethodWrapper.invoke(AbstractDeclarativeValidator.java:118)
at eu.numberfour.n4js.validation.N4JSValidator$1.invoke(N4JSValidator.java:96)
at org.eclipse.xtext.validation.AbstractDeclarativeValidator.internalValidate(AbstractDeclarativeValidator.java:312)
at org.eclipse.xtext.validation.AbstractInjectableValidator.validate(AbstractInjectableValidator.java:71)
at org.eclipse.xtext.validation.CompositeEValidator.validate(CompositeEValidator.java:151)
at org.eclipse.emf.ecore.util.Diagnostician.doValidate(Diagnostician.java:171)
at eu.numberfour.n4js.utils.validation.PrePostDiagnostician.validate(PrePostDiagnostician.java:56)
at org.eclipse.xtext.validation.CancelableDiagnostician.doValidateContents(CancelableDiagnostician.java:70)
at eu.numberfour.n4js.utils.validation.PrePostDiagnostician.validate(PrePostDiagnostician.java:56)
at org.eclipse.xtext.validation.CancelableDiagnostician.doValidateContents(CancelableDiagnostician.java:70)
at eu.numberfour.n4js.utils.validation.PrePostDiagnostician.validate(PrePostDiagnostician.java:56)
at org.eclipse.xtext.validation.ResourceValidatorImpl.validate(ResourceValidatorImpl.java:146)
at eu.numberfour.n4js.validation.N4JSResourceValidator.validate(N4JSResourceValidator.java:57)
at org.eclipse.xtext.validation.ResourceValidatorImpl.validate(ResourceValidatorImpl.java:90)
at eu.numberfour.n4js.ui.validation.ManifestAwareResourceValidator.validate(ManifestAwareResourceValidator.java:43)
at org.eclipse.xtext.ui.validation.DefaultResourceUIValidatorExtension.addMarkers(DefaultResourceUIValidatorExtension.java:60)
at org.eclipse.xtext.ui.validation.DefaultResourceUIValidatorExtension.updateValidationMarkers(DefaultResourceUIValidatorExtension.java:46)
at org.eclipse.xtext.builder.builderState.MarkerUpdaterImpl.processDelta(MarkerUpdaterImpl.java:93)
at org.eclipse.xtext.builder.builderState.MarkerUpdaterImpl.updateMarkers(MarkerUpdaterImpl.java:63)
at org.eclipse.xtext.builder.builderState.AbstractBuilderState.updateMarkers(AbstractBuilderState.java:82)
at eu.numberfour.n4js.ui.building.N4JSGenerateImmediatelyBuilderState.updateMarkers(N4JSGenerateImmediatelyBuilderState.java:121)
at org.eclipse.xtext.builder.clustering.ClusteringBuilderState.doUpdate(ClusteringBuilderState.java:283)
at eu.numberfour.n4js.ui.building.N4JSGenerateImmediatelyBuilderState.doUpdate(N4JSGenerateImmediatelyBuilderState.java:116)
at org.eclipse.xtext.builder.builderState.AbstractBuilderState.update(AbstractBuilderState.java:116)
at org.eclipse.xtext.builder.impl.XtextBuilder.doBuild(XtextBuilder.java:287)
at eu.numberfour.n4js.ui.building.N4JSBuildTypeTrackingBuilder.doBuild(N4JSBuildTypeTrackingBuilder.java:58)
at org.eclipse.xtext.builder.impl.XtextBuilder.incrementalBuild(XtextBuilder.java:267)
at org.eclipse.xtext.builder.impl.XtextBuilder.build(XtextBuilder.java:161)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:205)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:245)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:303)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:359)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:382)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:144)

Users with the same issue

You are the first who have seen this exception. Write a tip to help other users and build your expert profile.

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