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Bug 254258

Summary:	NullPointerException when trying to preview expression evaluation in a tooltip
Product:	java	Reporter:	stwr
Component:	Hints	Assignee:	Svata Dedic <sdedic>
Status:	RESOLVED DUPLICATE
Severity:	normal
Priority:	P2
Version:	8.1
Hardware:	PC
OS:	Windows 7
Issue Type:	DEFECT	Exception Reporter:
Attachments:	IDE log

Description stwr 2015-08-11 07:40:02 UTC

Created attachment 155259 [details]
IDE log

Product Version: NetBeans IDE Dev (Build 201508100002)
Java: 1.8.0_60-ea; Java HotSpot(TM) 64-Bit Server VM 25.60-b23
Runtime: Java(TM) SE Runtime Environment 1.8.0_60-ea-b25
System: Windows 7 version 6.1 running on amd64; Cp1250; en_US (nb)
User directory: C:\Users\cendrowiczm\AppData\Roaming\NetBeans\dev
Cache directory: C:\Users\cendrowiczm\AppData\Local\NetBeans\Cache\dev

Test Case --> http://services.netbeans.org/synergy/client/app/#/case/1005/suite/1639/v/1

Please experiment with several code blocks (i.e. lines 92, 93, 96), select some code blocks and move mouse over this block in order to see the tooltip.

Actually the tooltip is displayed and contains correct value. However the NPE is being thrown (please see the IDE log for the stack trace).

Comment 1 Jiri Kovalsky 2015-08-11 12:16:24 UTC

Product Version: NetBeans IDE Dev (Build 201508100002)
Java: 1.8.0_51; Java HotSpot(TM) 64-Bit Server VM 25.51-b03
Runtime: Java(TM) SE Runtime Environment 1.8.0_51-b16
System: Linux version 3.13.0-37-generic running on amd64; UTF-8; cs_CZ (nb)
User directory: /home/cesilko/.netbeans/dev
Cache directory: /home/cesilko/.cache/netbeans/dev

Reproducible.

java.lang.NullPointerException
	at org.netbeans.modules.java.hints.introduce.IntroduceHint.addExpressionFixes(IntroduceHint.java:371)
	at org.netbeans.modules.java.hints.introduce.IntroduceHint.computeError(IntroduceHint.java:428)
	at org.netbeans.modules.java.hints.introduce.IntroduceHint.run(IntroduceHint.java:242)
	at org.netbeans.modules.java.hints.introduce.IntroduceHint.run(IntroduceHint.java:142)
[catch] at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:298)
	at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:584)
	at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:809)
	at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304)
	at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.execute(TaskProcessor.java:725)
	at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:686)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
	at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
	at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
	at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)

Comment 2 Svata Dedic 2015-08-26 12:57:22 UTC

Should be the same cause as #254170

*** This bug has been marked as a duplicate of bug 254170 ***