Updating classpath container java lang nullpointerexception
J2EEModule Virtual References(J2EEModule Virtual Component.java:207) at org.eclipse.m2Web Project Configurator Delegate.configure Classpath(Web Project Configurator Delegate.java:386) at org.eclipse.m2At a minimum, include the stacktrace in the question, and mark the important line numbers in the code. If you count the lines in the file above, line 4 is the one that I labeled with the "HERE" comment.
I've been fighting an internal Eclipse error for two days.
This question’s answers are a collaborative effort. because it's a programmer error and the programmer will need that information for debugging purposes.
If you see something that can be improved, just edit the answer to improve it! Alternatively, there may be cases where the purpose of the method is not solely to operate on the passed in object, and therefore a null parameter may be acceptable.
Build Path Classpath(Build Path Manager.java:371) at org.eclipse.m2internal.
Build Path Manager.update Classpath(Build Path Manager.java:191) at org.eclipse.m2internal.