Language Support for Java client: couldn't create connection to server.

[Hogenbirk]

macOS : Sonoma 14.1.1
VSCode : Version: 1.84.2 (Universal)
JDK : jdk-21
Language Support for Java(TM) by Red Hat : v1.24.0

copilot directed me to check java.home settings in both VSCode, ~/. zshrc , pom file, but paths are all set correctly.

Current Result

When starting VSCode, this popup message appears, Language Support for Java client: couldn't create connection to server.
This is found in output upon running : [Error - 14:02:00] Language Support for Java client: couldn't create connection to server.
Error: spawn Unknown system error -8
In JSON i increased from 1G to 2G "java.jdt.ls.vmargs": "-Xmx2G"
Note I also configured "java.jdt.ls.java.home": "/Users/MyName/Desktop/jdk-21"

Could you please help here? Many thanks for looking at this.

[rgrunber]

Would you be able to set java.trace.server to verbose in settings and re-launch ? Once it fails, go to the command palette and run Java: Open All Log Files . I'd expect the .out-jdt.ls-${date}.log & .err-jdt-ls-${date}.log to be empty but it would be interesting to know if there's any errors in the .log file and what is in the client.log.${date} file.

[AnnalisaBX]

Hi,
I have the same problem, I have tried to check the .json configuration file but it correctly detects my JDK installation, none of the solutions that I found works.

Environment
Operating System: Sonoma 14.1.2 (M1)
JDK version: 17.0.9 2023-10-17 LTS
Visual Studio Code version: 1.85.1
Java extension version: 1.25.1

This error doesn't let me compile anything.
Thanks!

[roadking]

I am having the same issue
OS: Windows_NT x64 10.0.0.22621
JDK version: OpenJDK 64-Bit Server VM Corretto-11.0.12.7.1 (build 11.0.12+7-LTS, mixed mode)
Visual Studio Code version: 1.85.1
Java extension version: ALL

I have un-installed and reinstalled the plugin and tried several versions, all with the same error:

Language Support for Java (Syntax Server) client: couldn't create connection to server.

at Object.spawn (node:child_process:817:9)
at c:\Users\username.vscode\extensions\redhat.java-1.25.1-win32-x64\dist\extension.js:2:1332062
at async c.createConnection (c:\Users\username.vscode\extensions\redhat.java-1.25.1-win32-x64\dist\extension.js:2:1164690)
at async c.start (c:\Users\username.vscode\extensions\redhat.java-1.25.1-win32-x64\dist\extension.js:2:1155207)

[roadking]

Changing the default JDK for VSCode to v17 solved the issue. I had tried that earlier, but it wasn't working. - I moved the JDK out of my user directory and into C:\ and tried again. That worked.

[github-actions]

This issue has been closed automatically because it needs more information and has not had recent activity. Please reach out if you have or find the answers we need so that we can investigate further.

[PRANJALJAG99]

I am also facing same problem plz give solutions why it is happening @language Support for Java client: couldn't create connection to server.
Plz plz plz help

[rgrunber]

Would you be able to perform any of the steps listed in #3391 (comment) ? Having some logs would definitely be needed to narrow down how/why this is happening.

[robinwyss]

I ran into the same issue. In my case it seems to pick up the wrong jdk, it uses /Users/XXXXX/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home even though I have configured java.jdt.js.java.home to /Library/Java/JavaVirtualMachines/jdk-19.0.2.jdk/Contents/Home any ideas why it might pick up the wrong jdk (I tried both user and workspace settings).

here is the log output

!SESSION 2025-02-04 14:58:16.103 -----------------------------------------------
eclipse.buildId=unknown
java.version=21.0.5
java.vendor=Eclipse Adoptium
BootLoader constants: OS=macosx, ARCH=aarch64, WS=cocoa, NL=en_CH
Framework arguments:  --pipe=/private/var/folders/1j/dxx1p1k95037sby17l0_9p0r65qqm6/T/lsp-e0494efdfgdfgdfgdfg5cfaa3dca913ac41.sock
Command-line arguments:  -data /Users/XXXXX/Library/Application Support/Code/User/workspaceStorage/b16176dfgdfgdfg74ad91967/redhat.java/jdt_ws --pipe=/private/var/folders/1j/dxx1p1k95037sby17l0_9p0r65qqm6/T/lsp-e0494efdfgdfgdfgdfg5cfaa3dca913ac41.sock

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 14:58:17.376
!MESSAGE class org.eclipse.jdt.ls.core.internal.JavaLanguageServerPlugin is started

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 14:58:17.413
!MESSAGE Started org.eclipse.buildship.core 25ms

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 14:58:17.417
!MESSAGE Started org.eclipse.m2e.core 0ms

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 14:58:17.485
!MESSAGE Main thread is waiting

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 14:58:17.504
!MESSAGE >> initialize

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 14:58:17.509
!MESSAGE Initializing Java Language Server 1.44.0.202501220510

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 14:58:17.899
!MESSAGE ProjectRegistryRefreshJob finished 469ms

!ENTRY org.eclipse.jdt.launching 4 4 2025-02-04 14:58:18.180
!MESSAGE Process returned with error code "137".
Command line arguments: /Users/XXXXX/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home/bin/java -Xmx16m -classpath /Users/XXXXX/Library/Application Support/Code/User/globalStorage/redhat.java/1.39.0/config_mac/org.eclipse.osgi/57/0/.cp/lib/launchingsupport.jar org.eclipse.jdt.internal.launching.support.LibraryDetector
Output: Standard output:

Standard error:

!STACK 0
java.lang.IllegalStateException: Process returned with error code "137".
Command line arguments: /Users/XXXXX/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home/bin/java -Xmx16m -classpath /Users/XXXXX/Library/Application Support/Code/User/globalStorage/redhat.java/1.39.0/config_mac/org.eclipse.osgi/57/0/.cp/lib/launchingsupport.jar org.eclipse.jdt.internal.launching.support.LibraryDetector
Output: Standard output:

Standard error:

	at org.eclipse.jdt.internal.launching.StandardVMType.checkProcessResult(StandardVMType.java:895)
	at org.eclipse.jdt.internal.launching.StandardVMType.generateLibraryInfo(StandardVMType.java:707)
	at org.eclipse.jdt.internal.launching.StandardVMType.getLibraryInfo(StandardVMType.java:224)
	at org.eclipse.jdt.internal.launching.StandardVMType.getVMVersion(StandardVMType.java:265)
	at org.eclipse.jdt.internal.launching.macosx.MacOSXVMInstallType.getVMVersion(MacOSXVMInstallType.java:432)
	at org.eclipse.jdt.internal.launching.macosx.MacOSXVMInstall.getJavaVersion(MacOSXVMInstall.java:53)
	at org.eclipse.jdt.internal.launching.environments.ExecutionEnvironmentAnalyzer.analyze(ExecutionEnvironmentAnalyzer.java:130)
	at org.eclipse.jdt.internal.launching.environments.Analyzer.analyze(Analyzer.java:43)
	at org.eclipse.jdt.internal.launching.environments.EnvironmentsManager.analyze(EnvironmentsManager.java:430)
	at org.eclipse.jdt.internal.launching.environments.EnvironmentsManager.initializeCompatibilities(EnvironmentsManager.java:337)
	at org.eclipse.jdt.internal.launching.environments.ExecutionEnvironment.init(ExecutionEnvironment.java:185)
	at org.eclipse.jdt.internal.launching.environments.ExecutionEnvironment.getDefaultVM(ExecutionEnvironment.java:227)
	at org.eclipse.jdt.ls.core.internal.JVMConfigurator.setDefaultEnvironmentVM(JVMConfigurator.java:235)
	at org.eclipse.jdt.ls.core.internal.JVMConfigurator.configureJVMs(JVMConfigurator.java:190)
	at org.eclipse.jdt.ls.core.internal.JVMConfigurator.configureJVMs(JVMConfigurator.java:105)
	at org.eclipse.jdt.ls.core.internal.handlers.BaseInitHandler.handleInitializationOptions(BaseInitHandler.java:128)
	at org.eclipse.jdt.ls.core.internal.handlers.InitHandler.handleInitializationOptions(InitHandler.java:95)
	at org.eclipse.jdt.ls.core.internal.handlers.BaseInitHandler.initialize(BaseInitHandler.java:68)
	at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.initialize(JDTLanguageServer.java:284)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$recursiveFindRpcMethods$0(GenericEndpoint.java:65)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:128)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:271)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:201)
	at org.eclipse.jdt.ls.core.internal.ParentProcessWatcher.lambda$1(ParentProcessWatcher.java:144)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:185)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:97)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:114)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)

!ENTRY org.eclipse.jdt.launching 4 4 2025-02-04 14:58:18.198
!MESSAGE Failed to retrieve default libraries for /Users/XXXXX/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home

!ENTRY org.eclipse.jdt.launching 4 4 2025-02-04 14:58:18.324
!MESSAGE Process returned with error code "137".
Command line arguments: /Users/XXXXX/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home/bin/java -Xmx16m -classpath /Users/XXXXX/Library/Application Support/Code/User/globalStorage/redhat.java/1.39.0/config_mac/org.eclipse.osgi/57/0/.cp/lib/launchingsupport.jar org.eclipse.jdt.internal.launching.support.LibraryDetector
Output: Standard output:

Standard error:

!STACK 0
java.lang.IllegalStateException: Process returned with error code "137".
Command line arguments: /Users/XXXXX/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home/bin/java -Xmx16m -classpath /Users/XXXXX/Library/Application Support/Code/User/globalStorage/redhat.java/1.39.0/config_mac/org.eclipse.osgi/57/0/.cp/lib/launchingsupport.jar org.eclipse.jdt.internal.launching.support.LibraryDetector
Output: Standard output:

Standard error:

	at org.eclipse.jdt.internal.launching.StandardVMType.checkProcessResult(StandardVMType.java:895)
	at org.eclipse.jdt.internal.launching.StandardVMType.generateLibraryInfo(StandardVMType.java:707)
	at org.eclipse.jdt.internal.launching.StandardVMType.getLibraryInfo(StandardVMType.java:227)
	at org.eclipse.jdt.internal.launching.StandardVMType.getVMVersion(StandardVMType.java:265)
	at org.eclipse.jdt.internal.launching.macosx.MacOSXVMInstallType.getVMVersion(MacOSXVMInstallType.java:432)
	at org.eclipse.jdt.internal.launching.macosx.MacOSXVMInstall.getJavaVersion(MacOSXVMInstall.java:53)
	at org.eclipse.jdt.internal.launching.environments.ExecutionEnvironmentAnalyzer.analyze(ExecutionEnvironmentAnalyzer.java:130)
	at org.eclipse.jdt.internal.launching.environments.Analyzer.analyze(Analyzer.java:43)
	at org.eclipse.jdt.internal.launching.environments.EnvironmentsManager.analyze(EnvironmentsManager.java:430)
	at org.eclipse.jdt.internal.launching.environments.EnvironmentsManager.initializeCompatibilities(EnvironmentsManager.java:337)
	at org.eclipse.jdt.internal.launching.environments.ExecutionEnvironment.init(ExecutionEnvironment.java:185)
	at org.eclipse.jdt.internal.launching.environments.ExecutionEnvironment.getDefaultVM(ExecutionEnvironment.java:227)
	at org.eclipse.jdt.ls.core.internal.JVMConfigurator.setDefaultEnvironmentVM(JVMConfigurator.java:235)
	at org.eclipse.jdt.ls.core.internal.JVMConfigurator.configureJVMs(JVMConfigurator.java:190)
	at org.eclipse.jdt.ls.core.internal.JVMConfigurator.configureJVMs(JVMConfigurator.java:105)
	at org.eclipse.jdt.ls.core.internal.handlers.BaseInitHandler.handleInitializationOptions(BaseInitHandler.java:128)
	at org.eclipse.jdt.ls.core.internal.handlers.InitHandler.handleInitializationOptions(InitHandler.java:95)
	at org.eclipse.jdt.ls.core.internal.handlers.BaseInitHandler.initialize(BaseInitHandler.java:68)
	at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.initialize(JDTLanguageServer.java:284)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$recursiveFindRpcMethods$0(GenericEndpoint.java:65)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:128)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:271)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:201)
	at org.eclipse.jdt.ls.core.internal.ParentProcessWatcher.lambda$1(ParentProcessWatcher.java:144)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:185)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:97)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:114)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)

!ENTRY org.eclipse.jdt.launching 4 4 2025-02-04 14:58:18.346
!MESSAGE Failed to retrieve default libraries for /Users/XXXXX/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home

!ENTRY org.eclipse.jdt.launching 4 4 2025-02-04 14:58:18.363
!MESSAGE Could not determine Java version for location /Users/XXXXX/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home.

!ENTRY org.eclipse.jdt.launching 4 4 2025-02-04 14:58:18.369
!MESSAGE Could not determine Java version for location /Users/XXXXX/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home.

!ENTRY org.eclipse.jdt.launching 4 4 2025-02-04 14:58:18.374
!MESSAGE Could not determine Java version for location /Users/XXXXX/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home.

!ENTRY org.eclipse.jdt.launching 4 4 2025-02-04 14:58:18.378
!MESSAGE Could not determine Java version for location /Users/XXXXX/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home.

!ENTRY org.eclipse.jdt.launching 4 4 2025-02-04 14:58:18.382
!MESSAGE Could not determine Java version for location /Users/XXXXX/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home.

[rgrunber]

I ran into the same issue. In my case it seems to pick up the wrong jdk, it uses /Users/XXXXX/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home even though I have configured java.jdt.js.java.home to /Library/Java/JavaVirtualMachines/jdk-19.0.2.jdk/Contents/Home any ideas why it might pick up the wrong jdk (I tried both user and workspace settings).

This seems to be a slightly different issue, but still interesting.

java.jdt.ls.java.home is the optional setting that points to the JRE (or even JDK) that will be used to start the language server used by vscode-java. As of vscode-java 1.39.0, that must be 21 or newer. It was Java 17 or newer since around June 2022, and 11 or newer since July 2020. Looking at the logs I see java.version=21.0.5 for the startup, so I'm guessing it ignores the setting and either attempts to find a proper JRE, or uses the embedded one (we embed a JRE even on macosx-aarch64). It uses that for startup.

However, the errors Could not determine Java version for location ... are more about the language server attempting to get the version information of that corretto-1.8.0_322 JVM. It basically runs its own LibraryDetector application with it's the 1.8.0 java binary to detect information from the initial system properties. You can read what it's doing at https://github.com/eclipse-jdt/eclipse.jdt.debug/blob/master/org.eclipse.jdt.launching/support/org/eclipse/jdt/internal/launching/support/LibraryDetector.java#L50 . It probably tries a bunch of other things to get the version information which ultimately fail. As a workaround, are you able to temporarily uninstall that corretto-1.8.0_322 and see if that fixes the issue ?

[robinwyss]

I deleted corretto, not sure where it came from and I need to check if something else is broken now, but that solved the issue. Now it lists several JRE/JDKs and then picks one, it seems that before it failed on corretto (probably the first one it checked) and that crashed the extensions.

!SESSION 2025-02-04 16:23:23.672 -----------------------------------------------
eclipse.buildId=unknown
java.version=21.0.5
java.vendor=Eclipse Adoptium
BootLoader constants: OS=macosx, ARCH=aarch64, WS=cocoa, NL=en_CH
Framework arguments:  --pipe=/private/var/folders/1j/dxx1p1k95037sby17l0dfff_9p0r65qqm6/T/lsp-67a4e9fcc491864c900adddd5038fc.sock
Command-line arguments:  -data /Users/XXXXXLibrary/Application Support/Code/User/workspaceStorage/b16176231891ddddd1cb0cfe74ad91967/redhat.java/jdt_ws --pipe=/private/var/folders/1j/dxx1p1k95037sby17l0_9p0r65qqm6/T/lsp-67a4e9fcc491864c900adddd5038fc.sock

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:25.402
!MESSAGE class org.eclipse.jdt.ls.core.internal.JavaLanguageServerPlugin is started

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:25.439
!MESSAGE Started org.eclipse.buildship.core 23ms

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:25.442
!MESSAGE Started org.eclipse.m2e.core 0ms

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:25.531
!MESSAGE >> initialize

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:25.543
!MESSAGE Initializing Java Language Server 1.44.0.202501220510

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:25.551
!MESSAGE Main thread is waiting

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:25.897
!MESSAGE ProjectRegistryRefreshJob finished 452ms

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:25.972
!MESSAGE Setting /Library/Java/JavaVirtualMachines/jdk-19.0.2.jdk/Contents/Home as 'JavaSE-19' environment (id:net.java.openjdk.jdk)

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:25.979
!MESSAGE Setting /Library/Java/JavaVirtualMachines/temurin-21.jdk/Contents/Home as 'JavaSE-21' environment (id:1738682605973)

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:25.994
!MESSAGE Setting /opt/homebrew/Cellar/openjdk/23.0.1/libexec/openjdk.jdk/Contents/Home as 'JavaSE-23' environment (id:1738682605980)

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:25.998
!MESSAGE Setting /Library/Java/JavaVirtualMachines/jdk-17.0.2.jdk/Contents/Home as 'JavaSE-17' environment (id:1738682605995)

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.008
!MESSAGE Setting java.home /Library/Java/JavaVirtualMachines/jdk-19.0.2.jdk/Contents/Home as default global VM

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.042
!MESSAGE Default VM Install changed from  1738676650417-/Users/XXXXX.vscode/extensions/redhat.java-1.39.0-darwin-arm64/jre/21.0.5-macosx-aarch64 to net.java.openjdk.jdk-/Library/Java/JavaVirtualMachines/jdk-19.0.2.jdk/Contents/Home

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.056
!MESSAGE JVM Runtimes changed, saving new configuration

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.067
!MESSAGE Installed reference:file:/Users/XXXXX.vscode/extensions/visualstudioexptteam.vscodeintellicode-1.3.2/dist/com.microsoft.jdtls.intellicode.core-0.7.1.jar

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.078
!MESSAGE Installed reference:file:/Users/XXXXX.vscode/extensions/vscjava.vscode-gradle-3.16.4/server/com.microsoft.gradle.bs.importer-0.5.3.jar

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.088
!MESSAGE Installed reference:file:/Users/XXXXX.vscode/extensions/vscjava.vscode-java-debug-0.58.1/server/com.microsoft.java.debug.plugin-0.53.1.jar

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.100
!MESSAGE Installed reference:file:/Users/XXXXX.vscode/extensions/vscjava.vscode-java-dependency-0.24.1/server/com.microsoft.jdtls.ext.core-0.24.1.jar

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.119
!MESSAGE Installed reference:file:/Users/XXXXX.vscode/extensions/vscjava.vscode-maven-0.44.0/jdtls.ext/com.microsoft.java.maven.plugin/target/com.microsoft.java.maven.plugin-0.39.0.jar

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.143
!MESSAGE Started reference:file:/Users/XXXXX.vscode/extensions/visualstudioexptteam.vscodeintellicode-1.3.2/dist/com.microsoft.jdtls.intellicode.core-0.7.1.jar

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.166
!MESSAGE Started reference:file:/Users/XXXXX.vscode/extensions/vscjava.vscode-maven-0.44.0/jdtls.ext/com.microsoft.java.maven.plugin/target/com.microsoft.java.maven.plugin-0.39.0.jar

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.185
!MESSAGE Started reference:file:/Users/XXXXX.vscode/extensions/vscjava.vscode-java-debug-0.58.1/server/com.microsoft.java.debug.plugin-0.53.1.jar

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.205
!MESSAGE Started reference:file:/Users/XXXXX.vscode/extensions/vscjava.vscode-gradle-3.16.4/server/com.microsoft.gradle.bs.importer-0.5.3.jar

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.223
!MESSAGE Started reference:file:/Users/XXXXX.vscode/extensions/vscjava.vscode-java-dependency-0.24.1/server/com.microsoft.jdtls.ext.core-0.24.1.jar

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.229
!MESSAGE Static Commands: []

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.244
!MESSAGE Non-Static Commands: [java.project.import, java.project.changeImportedProjects, java.navigate.openTypeHierarchy, java.project.resolveStackTraceLocation, java.edit.handlePasteEvent, java.edit.stringFormatting, java.project.getSettings, java.project.resolveWorkspaceSymbol, java.project.upgradeGradle, java.project.createModuleInfo, java.vm.getAllInstalls, java.edit.organizeImports, java.project.refreshDiagnostics, java.project.removeFromSourcePath, java.project.listSourcePaths, java.project.updateSettings, java.project.getAll, java.reloadBundles, java.project.isTestFile, java.project.resolveText, java.project.getClasspaths, java.navigate.resolveTypeHierarchy, java.edit.smartSemicolonDetection, java.project.updateSourceAttachment, java.project.updateClassPaths, java.decompile, java.protobuf.generateSources, java.project.resolveSourceAttachment, java.project.updateJdk, java.project.addToSourcePath, java.completion.onDidSelect]

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.256
!MESSAGE Static Commands: []

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.260
!MESSAGE Non-Static Commands: [java.intellicode.enable]

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.263
!MESSAGE Static Commands: []

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.266
!MESSAGE Non-Static Commands: [java.maven.initializeSearcher, java.maven.searchArtifact, java.maven.addDependency, java.maven.controlContext]

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.269
!MESSAGE Static Commands: []

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.272
!MESSAGE Non-Static Commands: [vscode.java.checkProjectSettings, vscode.java.isOnClasspath, vscode.java.fetchUsageData, vscode.java.validateLaunchConfig, vscode.java.resolveInlineVariables, vscode.java.resolveClassFilters, vscode.java.resolveMainMethod, vscode.java.resolveClasspath, vscode.java.resolveBuildFiles, vscode.java.resolveMainClass, vscode.java.updateDebugSettings, vscode.java.resolveSourceUri, vscode.java.fetchPlatformSettings, vscode.java.buildWorkspace, vscode.java.startDebugSession, vscode.java.inferLaunchCommandLength, vscode.java.resolveElementAtSelection, vscode.java.resolveJavaExecutable]

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.275
!MESSAGE Static Commands: []

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.278
!MESSAGE Non-Static Commands: [java.gradle.delegateTest]

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.283
!MESSAGE Static Commands: []

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.286
!MESSAGE Non-Static Commands: [java.project.refreshLib, java.project.checkImportStatus, java.project.list, java.project.generateJar, java.project.getMainClasses, java.getPackageData, java.resolvePath]

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.296
!MESSAGE RepositoryRegistryUpdateJob finished 0ms

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.302
!MESSAGE >> initialized

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:26.364
!MESSAGE Importing Maven project(s)

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:29.086
!MESSAGE Workspace initialized in 2788ms

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:29.114
!MESSAGE >> initialization job finished

!ENTRY java-debug 1 0 2025-02-04 16:23:29.793
!MESSAGE Starting com.microsoft.java.debug.plugin

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:29.846
!MESSAGE Reconciled 1. Took 0 ms

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:29.948
!MESSAGE >> build jobs finished

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:29.952
!MESSAGE >> registerWatchers'

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:29.958
!MESSAGE >> registerFeature 'workspace/didChangeWatchedFiles'

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:30.489
!MESSAGE begin problem for /HelloController.java

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:30.498
!MESSAGE 0 problems reported for /HelloController.java

!ENTRY org.eclipse.jdt.ls.core 1 0 2025-02-04 16:23:30.545
!MESSAGE Validated 1. Took 49 ms
``

[rgrunber]

For what it's worth, I tried running with https://github.com/corretto/corretto-8/releases/tag/8.322.06.1 but maybe it's a platform-specific issue. It seems to be a fairly old version of that JDK so maybe there were issues.