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https://issues.apache.org/jira/browse/NETBEANS-463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16410328#comment-16410328
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Rick Hegarty commented on NETBEANS-463:
---------------------------------------
Just to add that the *IllegalArgumentException* is not thrown in most cases of
invalid *var* declarations. The only two scenarios I could find were two *var*
declarations for instance variables like this:
*{color:#654982}var a = () -> "hello";{color}*
*{color:#654982}var e;{color}*
See the comments in the attached Java application below for more details.
NetBeans *Help -> About* details:
{color:#205081}*Product Version:* Apache NetBeans IDE Dev (Build
incubator-netbeans-linux-375-on-20180320){color}
{color:#205081}*Java:* 1.8.0_162; Java HotSpot(TM) 64-Bit Server VM
25.162-b12{color}
{color:#205081}*Runtime:* Java(TM) SE Runtime Environment 1.8.0_162-b12{color}
{color:#205081}*System:* Windows 10 version 10.0 running on amd64; Cp1252;
en_US (nb){color}
{color:#205081}*User directory:*
C:\Users\johndoe\AppData\Roaming\NetBeans\dev{color}
{color:#205081}*Cache directory:*
C:\Users\johndoe\AppData\Local\NetBeans\Cache\dev{color}
> IllegalArgumentExcedption thrown if var type used for instance variables
> ------------------------------------------------------------------------
>
> Key: NETBEANS-463
> URL: https://issues.apache.org/jira/browse/NETBEANS-463
> Project: NetBeans
> Issue Type: Bug
> Reporter: Reema Taneja
> Assignee: Reema Taneja
> Priority: Trivial
> Labels: JDK10-LVTI
> Attachments: JavaApplication4.java
>
>
> Var type can only be used for local variables but this exception should not
> be thrown. We should display appropriate hint for invalid var usage.
> java.lang.IllegalArgumentException: Unsupported type: none, kind: NONE
> at
> org.netbeans.modules.java.source.usages.ClassFileUtil.encodeType(ClassFileUtil.java:294)
> at
> org.netbeans.modules.java.source.usages.ClassFileUtil.createFieldDescriptor(ClassFileUtil.java:148)
> at
> org.netbeans.api.java.source.ElementHandle.createImpl(ElementHandle.java:476)
> at org.netbeans.api.java.source.ElementHandle.create(ElementHandle.java:397)
> at
> org.netbeans.modules.java.navigation.CaretListeningTask.updateNavigatorSelection(CaretListeningTask.java:296)
> at
> org.netbeans.modules.java.navigation.CaretListeningTask.run(CaretListeningTask.java:153)
> at
> org.netbeans.modules.java.navigation.CaretListeningTask.run(CaretListeningTask.java:55)
> [catch] at
> org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:273)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:561)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:786)
> at org.openide.util.lookup.Lookups.executeWith(Lookups.java:279)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.execute(TaskProcessor.java:702)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:663)
> at
> java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:514)
> at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
> at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
> at
> org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
> at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
> at
> org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)
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