[NETBEANS-4981] NPE when launching VSCode extension on JDK8

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 12.2
• Fix Version/s: 12.2
• Component/s: vscode
• Labels: pull-request-available
• Assignee: Jan Lahoda
• Reporter: Jaroslav Tulach
• Created: 03/Nov/20 07:29
• Updated: 05/Feb/21 21:21
• Resolved: 29/Nov/20 11:24

Description

When launching 12.2beta3 VSCode extension  with JDK8 following error is raised:

Exit code 0[Error - 8:23:34] Server initialization failed.  Message: Internal error.  Code: -32603 java.util.concurrent.CompletionException: java.lang.NullPointerException    at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:273)    at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:280)    at java.util.concurrent.CompletableFuture.uniRun(CompletableFuture.java:708)    at java.util.concurrent.CompletableFuture$UniRun.tryFire(CompletableFuture.java:687)    at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)    at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962)    at org.netbeans.modules.java.lsp.server.protocol.Server$LanguageServerImpl.asyncOpenSelectedProjects(Server.java:210)    at org.netbeans.modules.java.lsp.server.protocol.Server$LanguageServerImpl.lambda$initialize$1(Server.java:276)    at org.openide.util.RequestProcessor$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$Processor.run(RequestProcessor.java:2033)Caused by: java.lang.NullPointerException    at org.netbeans.modules.java.lsp.server.protocol.Server$LanguageServerImpl.showIndexingCompleted(Server.java:219)    at java.util.concurrent.CompletableFuture.uniRun(CompletableFuture.java:705) 

This is very likely due to missing nbjavac. Try:

netbeans/java/java.lsp.server/vscode$ npm run nbcode -- --jdkhome /jdk1.8.0/ -J-Dnetbeans.logger.console=true

followed by

netbeans/java/java.lsp.server/vscode$ code --extensionDevelopmentPath=`pwd` ~/tmp/withcontrol/

Issue Links

• links to: GitHub Pull Request #2517