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https://issues.apache.org/jira/browse/NETBEANS-2029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16756525#comment-16756525
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Laszlo Kishalmi commented on NETBEANS-2029:
-------------------------------------------
It happens as the default Gradle distribution is not installed on your System.
Previously the Gradle support just downloaded it in the background at the IDE
start. That thing has to be replaced, so it get removed.
If you go to Tools > Options > Java > Gradle then press an Ok, it is going to
be installed. So these errors should go away.
I'm preparing a patch for the NPE-s now, but have to work on the installing
thing later today.
Thank you for filing this issue!
> Unloadable Spring Initializr gradle project
> -------------------------------------------
>
> Key: NETBEANS-2029
> URL: https://issues.apache.org/jira/browse/NETBEANS-2029
> Project: NetBeans
> Issue Type: Bug
> Components: projects - Gradle
> Affects Versions: 11.0
> Environment: Product Version: Apache NetBeans IDE Dev (Build
> incubator-netbeans-linux-987-on-20190129)
> Java: 1.8.0_201; Java HotSpot(TM) 64-Bit Server VM 25.201-b09
> Runtime: Java(TM) SE Runtime Environment 1.8.0_201-b09
> System: Linux version 4.15.0-43-generic running on amd64; UTF-8; it_IT (nb)
> User directory: /home/sasha/.netbeans/dev
> Cache directory: /home/sasha/.cache/netbeans/dev
> Reporter: Alessandro Falappa
> Assignee: Laszlo Kishalmi
> Priority: Major
> Labels: gradle
>
> I generated a basic Spring Boot gradle project on
> [http://start.spring.io|http://start.spring.io/] (choose gradle project type
> then press generate, unzip downloaded archive).
> I opened the generated project in NB11.
> The following exception pops-up almost immediately after opening:
> {code:java}
> java.lang.NullPointerException: The file parameter cannot be null
> at org.openide.util.Parameters.notNull(Parameters.java:64)
> at org.openide.filesystems.FileUtil.toFileObject(FileUtil.java:853)
> at
> org.netbeans.modules.gradle.queries.GradleSourceForBinary.findSourceRoots2(GradleSourceForBinary.java:59)
> at
> org.netbeans.api.java.queries.SourceForBinaryQuery.findSourceRoots2(SourceForBinaryQuery.java:101)
> at
> org.netbeans.modules.parsing.impl.indexing.PathRegistry.createResources(PathRegistry.java:728)
> at
> org.netbeans.modules.parsing.impl.indexing.PathRegistry.getSources(PathRegistry.java:275)
> at
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsWork.getDone(RepositoryUpdater.java:4888)
> at
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$InitialRootsWork.getDone(RepositoryUpdater.java:5821)
> [catch] at
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doTheWork(RepositoryUpdater.java:3420)
> at
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task._run(RepositoryUpdater.java:6183)
> at
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.access$4300(RepositoryUpdater.java:5834)
> at
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2$1.run(RepositoryUpdater.java:6099)
> at org.openide.util.lookup.Lookups.executeWith(Lookups.java:279)
> at
> org.netbeans.modules.parsing.impl.RunWhenScanFinishedSupport.performScan(RunWhenScanFinishedSupport.java:83)
> at
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2.call(RepositoryUpdater.java:6095)
> at
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2.call(RepositoryUpdater.java:6091)
> at
> org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:153)
> at
> org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:335)
> at
> org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:118)
> at
> org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:67)
> at
> org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.run(RepositoryUpdater.java:6091)
> 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: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)
> {code}
> The resulting project is unloadable and unbuildable.
> A notification is also generated with a warning telling:
> {code:java}
> null
> Could not run build action using Gradle installation 'null'{code}
> The latter may be a distinct problem.
> On the console there is also another exception thrown (reporting essential
> part):
> {code:java}
> SEVERE [org.openide.util.RequestProcessor]: Error in RequestProcessor
> org.netbeans.modules.parsing.ui.indexing.errors.ErrorAnnotator$1
> java.lang.NullPointerException
> at
> org.netbeans.modules.gradle.classpath.AbstractGradleScriptClassPath.getResources(AbstractGradleScriptClassPath.java:107)
> at org.netbeans.api.java.classpath.ClassPath.entries(ClassPath.java:363)
> at org.netbeans.api.java.classpath.ClassPath.getRoots(ClassPath.java:248)
> at org.netbeans.api.java.classpath.ClassPath.findOwnerRoot(ClassPath.java:544)
> at
> org.netbeans.modules.parsing.impl.indexing.errors.Utilities.getSourceClassPathFor(Utilities.java:65)
> at
> org.netbeans.modules.parsing.impl.indexing.errors.TaskCache.computePersistentFile(TaskCache.java:434)
> at
> org.netbeans.modules.parsing.impl.indexing.errors.TaskCache.getErrors(TaskCache.java:119)
> at
> org.netbeans.modules.parsing.impl.indexing.errors.TaskCache.isInError(TaskCache.java:359)
> at
> org.netbeans.modules.parsing.ui.indexing.errors.ErrorAnnotator$1.run(ErrorAnnotator.java:286)
> at org.openide.util.RequestProcessor$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$Processor.run(RequestProcessor.java:2033)
> Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to
> at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1459)
> at
> org.netbeans.modules.parsing.ui.indexing.errors.ErrorAnnotator.enqueue(ErrorAnnotator.java:230)
> {code}
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