[NETBEANS-889] False positive of "Null Pointer Dereference" when invoking Lamda

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 8.2, 9.0
• Component/s: java - Hints
• External issue URL: https://netbeans.org/bugzilla/show_bug.cgi?id=271926
• Assignee: Unassigned
• Reporter: Austin Stephens
• Created: 30/May/18 21:59
• Updated: 08/Jun/18 04:05

Description

If the last line of a void Lamda is "field = null" and invoke the resulting (in this case) Runnable, Netbeans will tell you that you are dereferncing a null pointer.

// Some comments here
	String value = "";
	void nullDereference(){
		Runnable run = ()->{
			value = null;
		};
		run.run();//false positive
	}