LSP4IJ 0.19.0 Release

[angelozerr]

We are about to release LSP4IJ 0.19.0. Highlights of this release include some bugs fixes and some performance improvement.

More details in the changelog.

Please give a try to the latest nightly build.

Unless you report a blocking issue, we'll proceed with the release next Thursday 12/04/2025. If you need to have more time, please tell me.

cc @CppCXY @InSyncWithFoo @seachicken @KUGDev @AlexWeinstein92 @aparnamichael @MituuZ @turkeylurkey @mrglavas @koxudaxi @FalsePattern @onriv @kristofvb @kdvolder @rcjsuen @jansorg @SCWells72 @ericdallo @nikunjarora12345 @DetachHead @sergeysavchuk @bzoracler @bratorange

[angelozerr]

/cc @vitallium

[mrglavas]

Unless you report a blocking issue, we'll proceed with the release next Thursday 12/04/2025. If you need to have more time, please tell me.

@angelozerr Did you mean next Thursday or tomorrow?

[angelozerr]

Unless you report a blocking issue, we'll proceed with the release next Thursday 12/04/2025. If you need to have more time, please tell me.

@angelozerr Did you mean next Thursday or tomorrow?

Tomorrow

[angelozerr]

Unless you report a blocking issue, we'll proceed with the release next Thursday 12/04/2025. If you need to have more time, please tell me.

@angelozerr Did you mean next Thursday or tomorrow?

Tomorrow

My bad I did a mistake with the date. I would like to do the release tomorrow but if it is not possible for you please tell me.

[mrglavas]

Thanks for clarifying. I will be testing it today.

[mrglavas]

@angelozerr I tested the 0.18.1-20251130-170807 build with Liberty Tools today and did not encounter any new issues. The language server features we use were working well.

[angelozerr]

Thanks @mrglavas for your feedback!

[angelozerr]

LSP4IJ 0.19.0 is now available on JetBrains marketplace!

[dessina-devasia]

@angelozerr While testing with LSP4IJ 0.19.0, I encountered a MicroProfile error when using Goto → Type Declaration. It wont affect the functionality, but shows as an IntelliJ exception.

Dec 05, 2025 6:58:53 PM org.eclipse.lsp4mp.ls.MicroProfileLanguageServer initialize
INFO: Initializing MicroProfile server 0.13.0-20241022-1138 with /Applications/IntelliJ IDEA CE.app/Contents/jbr/Contents/Home
Dec 05, 2025 7:05:02 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint fallbackResponseError
SEVERE: Internal error: java.lang.reflect.InvocationTargetException
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:67)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
	at org.eclipse.lsp4mp.ls.commons.ParentProcessWatcher.lambda$apply$0(ParentProcessWatcher.java:148)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:115)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
	... 12 more
Caused by: java.lang.NullPointerException: Cannot invoke "org.eclipse.lsp4mp.ls.java.JavaTextDocuments$JavaTextDocument.executeIfInMicroProfileProject(java.util.function.BiFunction, Object, boolean)" because "document" is null
	at org.eclipse.lsp4mp.ls.java.JavaFileTextDocumentService.codeLens(JavaFileTextDocumentService.java:203)
	at org.eclipse.lsp4mp.ls.MicroProfileTextDocumentService.codeLens(MicroProfileTextDocumentService.java:242)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	... 14 more

[angelozerr]

@angelozerr While testing with LSP4IJ 0.19.0, I encountered a MicroProfile error when using Goto → Type Declaration. It wont affect the functionality, but shows as an IntelliJ exception.

Dec 05, 2025 6:58:53 PM org.eclipse.lsp4mp.ls.MicroProfileLanguageServer initialize
INFO: Initializing MicroProfile server 0.13.0-20241022-1138 with /Applications/IntelliJ IDEA CE.app/Contents/jbr/Contents/Home
Dec 05, 2025 7:05:02 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint fallbackResponseError
SEVERE: Internal error: java.lang.reflect.InvocationTargetException
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:67)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
	at org.eclipse.lsp4mp.ls.commons.ParentProcessWatcher.lambda$apply$0(ParentProcessWatcher.java:148)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:115)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
	... 12 more
Caused by: java.lang.NullPointerException: Cannot invoke "org.eclipse.lsp4mp.ls.java.JavaTextDocuments$JavaTextDocument.executeIfInMicroProfileProject(java.util.function.BiFunction, Object, boolean)" because "document" is null
	at org.eclipse.lsp4mp.ls.java.JavaFileTextDocumentService.codeLens(JavaFileTextDocumentService.java:203)
	at org.eclipse.lsp4mp.ls.MicroProfileTextDocumentService.codeLens(MicroProfileTextDocumentService.java:242)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	... 14 more

@dessina-devasia have you every time this issue? I dont think this issue comes from 0.19.0 and this problem already exists

[dessina-devasia]

have you every time this issue?

Yes @angelozerr

[angelozerr]

And with 0.18.0 you have not this issue?

[angelozerr]

@dessina-devasia could you explain me your usecase please by creating a new issue.

[dessina-devasia]

@angelozerr This issue was introduced in version 0.19.0 and was not present earlier. I verified with LSP4IJ 0.18.0, and the issue does not reproduce in that version.

Steps to Reproduce

1. Open any Java class.
2. Press Cmd/Ctrl + Click on a class name (for example, String) to navigate to its implementation.
3. The issue occurs.

Alternative ways to reproduce

1. Use Goto -> Implementation on a class name.
2. Use Goto -> Type Declaration on a variable (for example: String str = ""; select str -> (Right click) -> Goto -> Type Declaration).

[dessina-devasia]

@angelozerr I've opened this case as an issue in LSP4IJ repo as well. Thanks!