incognitoTheta opened a new issue, #4668:
URL: https://github.com/apache/netbeans/issues/4668
### Apache NetBeans version
Apache NetBeans 15
### What happened
` Stream.of(
new Student("Fred", 87, "Math", "Physics"),
).collect(Collectors.groupingBy(s-> letterGrade(s),
Collectors.mapping(s->))) `
For this particular code, everytime I add the lambda arrow into
Collectors.mapping method I receive this Netbeans error:
UnexpectedException details:
Annotation: An error occurred during parsing of
'C:\Users\Radu\Documents\NetBeansProjects\Stream\src\main\java\stream\pearson\DownstreamCollecting2.java'.
Please report a bug against java/source and attach dump file
'C:\Users\Radu\AppData\Roaming\NetBeans\15\var\log\DownstreamCollecting2_59.dump'.
An error occurred during parsing of
'C:\Users\Radu\Documents\NetBeansProjects\Stream\src\main\java\stream\pearson\DownstreamCollecting2.java'.
Please report a bug against java/source and attach dump file
'C:\Users\Radu\AppData\Roaming\NetBeans\15\var\log\DownstreamCollecting2_59.dump'.
Caused by: java.lang.IllegalStateException: java.lang.ClassCastException
at com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:383)
at
org.netbeans.modules.java.source.parsing.JavacParser.moveToPhase(JavacParser.java:770)
at
org.netbeans.modules.java.source.parsing.JavacParser.getResult(JavacParser.java:540)
at
org.netbeans.modules.java.source.parsing.JavacParser.getResult(JavacParser.java:141)
at
org.netbeans.modules.parsing.impl.TaskProcessor.callGetResult(TaskProcessor.java:608)
at
org.netbeans.modules.parsing.impl.SourceCache.getResult(SourceCache.java:241)
at
org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:775)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:279)
at
org.netbeans.modules.parsing.impl.TaskProcessor$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:515)
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)
Caused by: java.lang.ClassCastException
An error occurred during parsing of
'C:\Users\Radu\Documents\NetBeansProjects\Stream\src\main\java\stream\pearson\DownstreamCollecting2.java'.
Please report a bug against java/source and attach dump file
'C:\Users\Radu\AppData\Roaming\NetBeans\15\var\log\DownstreamCollecting2_59.dump'.
### How to reproduce
` Stream.of(
new Student("Fred", 87, "Math", "Physics"),
).collect(Collectors.groupingBy(s-> letterGrade(s),
Collectors.mapping(s-))) `
To reproduce the error just add ">" after "-" in mapping argument
### Did this work correctly in an earlier version?
No / Don't know
### Operating System
Windows 11
### JDK
open jdk 11
### Apache NetBeans packaging
Apache NetBeans provided installer
### Anything else
This problem occures everytime.
### Are you willing to submit a pull request?
No
### Code of Conduct
Yes
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