Java Extension Pack does not fully activate

[ykazakov]

With Java Extension Pack I cannot run a simple "Hello World" java program. Syntax highlighting and auto-completion seem to be working, but run/debug is not working. The same file runs fine in VSCode on my mac (with Java Extension Pack).

• Web Browser: Safari
• Local OS: MacOS 10.15.7
• Remote OS: Ubuntu 20.04.1
• Remote Architecture: amd64
• code-server --version: 3.6.1 62735da

Tested on 2 different ubuntu 20.04.1 servers. One is bare metal (laptop) another is an lxd container. Both exhibit identical problems with the latest code-server (installed by the script).

Java 11 was installed with:

sudo apt install openjdk-11-jdk openjdk-11-source

$ java --version
openjdk 11.0.8 2020-07-14
OpenJDK Runtime Environment (build 11.0.8+10-post-Ubuntu-0ubuntu120.04)
OpenJDK 64-Bit Server VM (build 11.0.8+10-post-Ubuntu-0ubuntu120.04, mixed mode, sharing)

Fresh start of code-server over ssh (with port forwarding):

Install Java Extension Pack 0.9.0.

Open a file Hello.java with the content:

public class Hello {
    public static void main(String[] args) {
        System.out.println("Hello!");        
    }    
}

Status window "Activating extensions..." appears.
The menu "Run|Debug" above the main method shows up. When clicked, the status window "Activating extensions..." appear again but nothing happens.

From the Logs (below) there seem to be a problem with the plugin "Maven for Java" v0.21.2. Still, I am not sure why Run|Debug is not working as do not use a maven project. Will try to reinstall the java plugins separately and report.

Remote Server:

[2020-10-27 23:08:54.039] [remoteagent] [error] /home/ubuntu/.local/share/code-server/extensions {"errno":-2,"code":"ENOENT","syscall":"scandir","path":"/home/ubuntu/.local/share/code-server/extensions"}
[2020-10-27 23:09:08.342] [remoteagent] [info] Installing extension: vscjava.vscode-java-pack
[2020-10-27 23:09:08.472] [remoteagent] [info] Downloaded extension: vscjava.vscode-java-pack undefined
[2020-10-27 23:09:08.519] [remoteagent] [info] Extracted extension to /home/ubuntu/.local/share/code-server/extensions/.vscjava.vscode-java-pack-0.9.0: vscjava.vscode-java-pack
[2020-10-27 23:09:08.520] [remoteagent] [info] Renamed to /home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-java-pack-0.9.0
[2020-10-27 23:09:08.521] [remoteagent] [info] Installation completed. vscjava.vscode-java-pack
[2020-10-27 23:09:09.287] [remoteagent] [info] Installing extension: redhat.java
[2020-10-27 23:09:09.287] [remoteagent] [info] Installing extension: vscjava.vscode-maven
[2020-10-27 23:09:09.287] [remoteagent] [info] Installing extension: vscjava.vscode-java-dependency
[2020-10-27 23:09:09.288] [remoteagent] [info] Installing extension: vscjava.vscode-java-debug
[2020-10-27 23:09:09.288] [remoteagent] [info] Installing extension: vscjava.vscode-java-test
[2020-10-27 23:09:09.471] [remoteagent] [info] Downloaded extension: vscjava.vscode-java-dependency undefined
[2020-10-27 23:09:09.492] [remoteagent] [info] Downloaded extension: vscjava.vscode-java-test undefined
[2020-10-27 23:09:09.493] [remoteagent] [info] Downloaded extension: vscjava.vscode-java-debug undefined
[2020-10-27 23:09:09.580] [remoteagent] [info] Extracted extension to /home/ubuntu/.local/share/code-server/extensions/.vscjava.vscode-java-dependency-0.14.0: vscjava.vscode-java-dependency
[2020-10-27 23:09:09.580] [remoteagent] [info] Renamed to /home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-java-dependency-0.14.0
[2020-10-27 23:09:09.601] [remoteagent] [info] Installation completed. vscjava.vscode-java-dependency
[2020-10-27 23:09:09.612] [remoteagent] [info] Extensions installed successfully: vscjava.vscode-java-dependency
[2020-10-27 23:09:09.701] [remoteagent] [info] Extracted extension to /home/ubuntu/.local/share/code-server/extensions/.vscjava.vscode-java-debug-0.29.0: vscjava.vscode-java-debug
[2020-10-27 23:09:09.704] [remoteagent] [info] Renamed to /home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-java-debug-0.29.0
[2020-10-27 23:09:09.708] [remoteagent] [info] Installation completed. vscjava.vscode-java-debug
[2020-10-27 23:09:09.728] [remoteagent] [info] Downloaded extension: vscjava.vscode-maven undefined
[2020-10-27 23:09:09.732] [remoteagent] [info] Extensions installed successfully: vscjava.vscode-java-debug
[2020-10-27 23:09:09.765] [remoteagent] [info] Extracted extension to /home/ubuntu/.local/share/code-server/extensions/.vscjava.vscode-java-test-0.25.0: vscjava.vscode-java-test
[2020-10-27 23:09:09.765] [remoteagent] [info] Renamed to /home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-java-test-0.25.0
[2020-10-27 23:09:09.768] [remoteagent] [info] Installation completed. vscjava.vscode-java-test
[2020-10-27 23:09:09.972] [remoteagent] [info] Extracted extension to /home/ubuntu/.local/share/code-server/extensions/.vscjava.vscode-maven-0.21.2: vscjava.vscode-maven
[2020-10-27 23:09:09.972] [remoteagent] [info] Renamed to /home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-maven-0.21.2
[2020-10-27 23:09:09.974] [remoteagent] [info] Installation completed. vscjava.vscode-maven
[2020-10-27 23:09:09.981] [remoteagent] [info] Extensions installed successfully: vscjava.vscode-maven
[2020-10-27 23:09:10.964] [remoteagent] [info] Downloaded extension: redhat.java undefined
[2020-10-27 23:09:11.249] [remoteagent] [info] Extracted extension to /home/ubuntu/.local/share/code-server/extensions/.redhat.java-0.61.0: redhat.java
[2020-10-27 23:09:11.249] [remoteagent] [info] Renamed to /home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0
[2020-10-27 23:09:11.252] [remoteagent] [info] Installation completed. redhat.java
[2020-10-27 23:09:11.263] [remoteagent] [info] Extensions installed successfully: redhat.java
[2020-10-27 23:09:11.275] [remoteagent] [info] Extensions installed successfully: vscjava.vscode-java-test
[2020-10-27 23:09:11.277] [remoteagent] [info] Extensions installed successfully: vscjava.vscode-java-pack
[2020-10-27 23:09:50.575] [remoteagent] [info] Extension host stdout {
  message: 'Starting Java server with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java --add-modules=ALL-SYSTEM --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED -Declipse.application=org.eclipse.jdt.ls.core.id1 -Dosgi.bundles.defaultStartLevel=4 -Declipse.product=org.eclipse.jdt.ls.core.product -Dfile.encoding=utf8 -XX:+UseParallelGC -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -Xmx1G -Xms100m -noverify -jar /home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0/server/plugins/org.eclipse.equinox.launcher_1.5.700.v20200207-2156.jar -configuration /home/ubuntu/.local/share/code-server/User/globalStorage/redhat.java/0.61.0/config_ss_linux -data /home/ubuntu/.local/share/code-server/User/workspaceStorage/-489189f1/redhat.java/ss_ws',
  level: 'info',
  timestamp: '2020-10-27 23:09:50.572'
}

[2020-10-27 23:09:50.606] [remoteagent] [info] Extension host stdout {
  message: 'Starting Java server with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java --add-modules=ALL-SYSTEM --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED -Declipse.application=org.eclipse.jdt.ls.core.id1 -Dosgi.bundles.defaultStartLevel=4 -Declipse.product=org.eclipse.jdt.ls.core.product -Dfile.encoding=utf8 -XX:+UseParallelGC -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -Xmx1G -Xms100m -noverify -jar /home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0/server/plugins/org.eclipse.equinox.launcher_1.5.700.v20200207-2156.jar -configuration /home/ubuntu/.local/share/code-server/User/globalStorage/redhat.java/0.61.0/config_linux -data /home/ubuntu/.local/share/code-server/User/workspaceStorage/-489189f1/redhat.java/jdt_ws',
  level: 'info',
  timestamp: '2020-10-27 23:09:50.605'
}

[2020-10-27 23:09:57.180] [remoteagent] [info] Extension host stdout {
  message: '[Error - 11:09:57 PM] Oct 27, 2020, 11:09:57 PM Failed to load extension bundles \n' +
    'Load bundle list\n' +
    'org.eclipse.core.runtime.CoreException: Load bundle list\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.BundleUtils.loadBundles(BundleUtils.java:169)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.InitHandler.handleInitializationOptions(InitHandler.java:79)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.BaseInitHandler.initialize(BaseInitHandler.java:53)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.initialize(JDTLanguageServer.java:205)\n' +
    '\tat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n' +
    '\tat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\n' +
    '\tat java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n' +
    '\tat java.base/java.lang.reflect.Method.invoke(Method.java:566)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.ParentProcessWatcher.lambda$0(ParentProcessWatcher.java:123)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)\n' +
    '\tat java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)\n' +
    '\tat java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)\n' +
    '\tat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)\n' +
    '\tat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)\n' +
    '\tat java.base/java.lang.Thread.run(Thread.java:834)\n' +
    'Contains: Cannot extract bundle symbolicName or version /home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-maven-0.21.2/jdtls.ext/com.microsoft.java.maven.plugin/target/com.microsoft.java.maven.plugin-0.21.2.jar\n' +
    'java.nio.file.NoSuchFileException: /home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-maven-0.21.2/jdtls.ext/com.microsoft.java.maven.plugin/target/com.microsoft.java.maven.plugin-0.21.2.jar\n' +
    '\tat java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)\n' +
    '\tat java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)\n' +
    '\tat java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116)\n' +
    '\tat java.base/sun.nio.fs.UnixFileAttributeViews$Basic.readAttributes(UnixFileAttributeViews.java:55)\n' +
    '\tat java.base/sun.nio.fs.UnixFileSystemProvider.readAttributes(UnixFileSystemProvider.java:149)\n' +
    '\tat java.base/sun.nio.fs.LinuxFileSystemProvider.readAttributes(LinuxFileSystemProvider.java:99)\n' +
    '\tat java.base/java.nio.file.Files.readAttributes(Files.java:1763)\n' +
    '\tat java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1225)\n' +
    '\tat java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:727)\n' +
    '\tat java.base/java.util.zip.ZipFile$CleanableResource.get(ZipFile.java:844)\n' +
    '\tat java.base/java.util.zip.ZipFile.<init>(ZipFile.java:247)\n' +
    '\tat java.base/java.util.zip.ZipFile.<init>(ZipFile.java:177)\n' +
    '\tat java.base/java.util.jar.JarFile.<init>(JarFile.java:348)\n' +
    '\tat java.base/java.util.jar.JarFile.<init>(JarFile.java:319)\n' +
    '\tat java.base/java.util.jar.JarFile.<init>(JarFile.java:258)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.BundleUtils.getBundleInfo(BundleUtils.java:302)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.BundleUtils.loadBundles(BundleUtils.java:116)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.InitHandler.handleInitializationOptions(InitHandler.java:79)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.BaseInitHandler.initialize(BaseInitHandler.java:53)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.initialize(JDTLanguageServer.java:205)\n' +
    '\tat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n' +
    '\tat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\n' +
    '\tat java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n' +
    '\tat java.base/java.lang.reflect.Method.invoke(Method.java:566)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.ParentProcessWatcher.lambda$0(ParentProcessWatcher.java:123)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)\n' +
    '\tat java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)\n' +
    '\tat java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)\n' +
    '\tat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)\n' +
    '\tat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)\n' +
    '\tat java.base/java.lang.Thread.run(Thread.java:834)\n',
  level: 'info',
  timestamp: '2020-10-27 23:09:57.178'
}

Language Support for Java:

[Error - 11:09:57 PM] Oct 27, 2020, 11:09:57 PM Failed to load extension bundles 
Load bundle list
org.eclipse.core.runtime.CoreException: Load bundle list
	at org.eclipse.jdt.ls.core.internal.handlers.BundleUtils.loadBundles(BundleUtils.java:169)
	at org.eclipse.jdt.ls.core.internal.handlers.InitHandler.handleInitializationOptions(InitHandler.java:79)
	at org.eclipse.jdt.ls.core.internal.handlers.BaseInitHandler.initialize(BaseInitHandler.java:53)
	at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.initialize(JDTLanguageServer.java:205)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
	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.jdt.ls.core.internal.ParentProcessWatcher.lambda$0(ParentProcessWatcher.java:123)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)
Contains: Cannot extract bundle symbolicName or version /home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-maven-0.21.2/jdtls.ext/com.microsoft.java.maven.plugin/target/com.microsoft.java.maven.plugin-0.21.2.jar
java.nio.file.NoSuchFileException: /home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-maven-0.21.2/jdtls.ext/com.microsoft.java.maven.plugin/target/com.microsoft.java.maven.plugin-0.21.2.jar
	at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)
	at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
	at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116)
	at java.base/sun.nio.fs.UnixFileAttributeViews$Basic.readAttributes(UnixFileAttributeViews.java:55)
	at java.base/sun.nio.fs.UnixFileSystemProvider.readAttributes(UnixFileSystemProvider.java:149)
	at java.base/sun.nio.fs.LinuxFileSystemProvider.readAttributes(LinuxFileSystemProvider.java:99)
	at java.base/java.nio.file.Files.readAttributes(Files.java:1763)
	at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1225)
	at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:727)
	at java.base/java.util.zip.ZipFile$CleanableResource.get(ZipFile.java:844)
	at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:247)
	at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:177)
	at java.base/java.util.jar.JarFile.<init>(JarFile.java:348)
	at java.base/java.util.jar.JarFile.<init>(JarFile.java:319)
	at java.base/java.util.jar.JarFile.<init>(JarFile.java:258)
	at org.eclipse.jdt.ls.core.internal.handlers.BundleUtils.getBundleInfo(BundleUtils.java:302)
	at org.eclipse.jdt.ls.core.internal.handlers.BundleUtils.loadBundles(BundleUtils.java:116)
	at org.eclipse.jdt.ls.core.internal.handlers.InitHandler.handleInitializationOptions(InitHandler.java:79)
	at org.eclipse.jdt.ls.core.internal.handlers.BaseInitHandler.initialize(BaseInitHandler.java:53)
	at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.initialize(JDTLanguageServer.java:205)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
	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.jdt.ls.core.internal.ParentProcessWatcher.lambda$0(ParentProcessWatcher.java:123)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)

Remote Extension Host:

[2020-10-27 23:08:55.499] [exthost] [info] extension host started
[2020-10-27 23:08:55.577] [exthost] [info] ExtensionService#_doActivateExtension ms-vscode.js-debug {"startup":false,"extensionId":{"value":"ms-vscode.js-debug","_lower":"ms-vscode.js-debug"},"activationEvent":"onDebugDynamicConfigurations"}
[2020-10-27 23:08:55.577] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/ms-vscode.js-debug/src/extension.js
[2020-10-27 23:08:55.878] [exthost] [info] ExtensionService#_doActivateExtension vscode.debug-auto-launch {"startup":true,"extensionId":{"value":"vscode.debug-auto-launch","_lower":"vscode.debug-auto-launch"},"activationEvent":"*"}
[2020-10-27 23:08:55.878] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/debug-auto-launch/dist/extension
[2020-10-27 23:08:55.881] [exthost] [info] ExtensionService#_doActivateExtension vscode.emmet {"startup":true,"extensionId":{"value":"vscode.emmet","_lower":"vscode.emmet"},"activationEvent":"*"}
[2020-10-27 23:08:55.881] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/emmet/dist/node/emmetNodeMain
[2020-10-27 23:08:55.905] [exthost] [info] ExtensionService#_doActivateExtension vscode.git {"startup":true,"extensionId":{"value":"vscode.github","_lower":"vscode.github"},"activationEvent":"*"}
[2020-10-27 23:08:55.905] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/git/dist/main
[2020-10-27 23:08:55.955] [exthost] [info] ExtensionService#_doActivateExtension vscode.merge-conflict {"startup":true,"extensionId":{"value":"vscode.merge-conflict","_lower":"vscode.merge-conflict"},"activationEvent":"*"}
[2020-10-27 23:08:55.955] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/merge-conflict/dist/mergeConflictMain
[2020-10-27 23:08:55.959] [exthost] [info] ExtensionService#_doActivateExtension vscode.search-result {"startup":true,"extensionId":{"value":"vscode.search-result","_lower":"vscode.search-result"},"activationEvent":"*"}
[2020-10-27 23:08:55.959] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/search-result/dist/extension.js
[2020-10-27 23:08:56.064] [exthost] [info] ExtensionService#_doActivateExtension vscode.github {"startup":true,"extensionId":{"value":"vscode.github","_lower":"vscode.github"},"activationEvent":"*"}
[2020-10-27 23:08:56.064] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/github/dist/extension.js
[2020-10-27 23:08:56.173] [exthost] [info] eager extensions activated
[2020-10-27 23:09:15.487] [exthost] [info] extension host started
[2020-10-27 23:09:15.597] [exthost] [info] ExtensionService#_doActivateExtension ms-vscode.js-debug {"startup":false,"extensionId":{"value":"ms-vscode.js-debug","_lower":"ms-vscode.js-debug"},"activationEvent":"onDebugDynamicConfigurations"}
[2020-10-27 23:09:15.598] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/ms-vscode.js-debug/src/extension.js
[2020-10-27 23:09:15.904] [exthost] [info] ExtensionService#_doActivateExtension vscode.debug-auto-launch {"startup":true,"extensionId":{"value":"vscode.debug-auto-launch","_lower":"vscode.debug-auto-launch"},"activationEvent":"*"}
[2020-10-27 23:09:15.904] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/debug-auto-launch/dist/extension
[2020-10-27 23:09:15.907] [exthost] [info] ExtensionService#_doActivateExtension vscode.emmet {"startup":true,"extensionId":{"value":"vscode.emmet","_lower":"vscode.emmet"},"activationEvent":"*"}
[2020-10-27 23:09:15.908] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/emmet/dist/node/emmetNodeMain
[2020-10-27 23:09:15.931] [exthost] [info] ExtensionService#_doActivateExtension vscode.git {"startup":true,"extensionId":{"value":"vscode.github","_lower":"vscode.github"},"activationEvent":"*"}
[2020-10-27 23:09:15.931] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/git/dist/main
[2020-10-27 23:09:15.982] [exthost] [info] ExtensionService#_doActivateExtension vscode.merge-conflict {"startup":true,"extensionId":{"value":"vscode.merge-conflict","_lower":"vscode.merge-conflict"},"activationEvent":"*"}
[2020-10-27 23:09:15.982] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/merge-conflict/dist/mergeConflictMain
[2020-10-27 23:09:15.986] [exthost] [info] ExtensionService#_doActivateExtension vscode.search-result {"startup":true,"extensionId":{"value":"vscode.search-result","_lower":"vscode.search-result"},"activationEvent":"*"}
[2020-10-27 23:09:15.986] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/search-result/dist/extension.js
[2020-10-27 23:09:16.081] [exthost] [info] ExtensionService#_doActivateExtension vscode.github {"startup":true,"extensionId":{"value":"vscode.github","_lower":"vscode.github"},"activationEvent":"*"}
[2020-10-27 23:09:16.081] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/github/dist/extension.js
[2020-10-27 23:09:16.169] [exthost] [info] eager extensions activated
[2020-10-27 23:09:49.025] [exthost] [info] extension host started
[2020-10-27 23:09:49.355] [exthost] [info] ExtensionService#_doActivateExtension redhat.java {"startup":false,"extensionId":{"value":"vscjava.vscode-java-test","_lower":"vscjava.vscode-java-test"},"activationEvent":"onLanguage:java"}
[2020-10-27 23:09:49.355] [exthost] [info] ExtensionService#loadCommonJSModule file:///home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0/dist/extension
[2020-10-27 23:09:49.427] [exthost] [info] ExtensionService#_doActivateExtension vscjava.vscode-java-debug {"startup":false,"extensionId":{"value":"vscjava.vscode-java-test","_lower":"vscjava.vscode-java-test"},"activationEvent":"onLanguage:java"}
[2020-10-27 23:09:49.428] [exthost] [info] ExtensionService#loadCommonJSModule file:///home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-java-debug-0.29.0/dist/extension
[2020-10-27 23:09:49.462] [exthost] [info] ExtensionService#_doActivateExtension vscjava.vscode-java-dependency {"startup":false,"extensionId":{"value":"vscjava.vscode-java-dependency","_lower":"vscjava.vscode-java-dependency"},"activationEvent":"onLanguage:java"}
[2020-10-27 23:09:49.463] [exthost] [info] ExtensionService#loadCommonJSModule file:///home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-java-dependency-0.14.0/dist/extension
[2020-10-27 23:09:49.505] [exthost] [info] ExtensionService#_doActivateExtension ms-vscode.js-debug {"startup":false,"extensionId":{"value":"ms-vscode.js-debug","_lower":"ms-vscode.js-debug"},"activationEvent":"onDebugDynamicConfigurations"}
[2020-10-27 23:09:49.505] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/ms-vscode.js-debug/src/extension.js
[2020-10-27 23:09:49.814] [exthost] [info] ExtensionService#_doActivateExtension vscode.debug-auto-launch {"startup":true,"extensionId":{"value":"vscode.debug-auto-launch","_lower":"vscode.debug-auto-launch"},"activationEvent":"*"}
[2020-10-27 23:09:49.814] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/debug-auto-launch/dist/extension
[2020-10-27 23:09:49.817] [exthost] [info] ExtensionService#_doActivateExtension vscode.emmet {"startup":true,"extensionId":{"value":"vscode.emmet","_lower":"vscode.emmet"},"activationEvent":"*"}
[2020-10-27 23:09:49.817] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/emmet/dist/node/emmetNodeMain
[2020-10-27 23:09:49.840] [exthost] [info] ExtensionService#_doActivateExtension vscode.git {"startup":true,"extensionId":{"value":"vscode.github","_lower":"vscode.github"},"activationEvent":"*"}
[2020-10-27 23:09:49.841] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/git/dist/main
[2020-10-27 23:09:49.891] [exthost] [info] ExtensionService#_doActivateExtension vscode.merge-conflict {"startup":true,"extensionId":{"value":"vscode.merge-conflict","_lower":"vscode.merge-conflict"},"activationEvent":"*"}
[2020-10-27 23:09:49.891] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/merge-conflict/dist/mergeConflictMain
[2020-10-27 23:09:49.895] [exthost] [info] ExtensionService#_doActivateExtension vscode.search-result {"startup":true,"extensionId":{"value":"vscode.search-result","_lower":"vscode.search-result"},"activationEvent":"*"}
[2020-10-27 23:09:49.895] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/search-result/dist/extension.js
[2020-10-27 23:09:50.395] [exthost] [info] ExtensionService#_doActivateExtension vscode.github {"startup":true,"extensionId":{"value":"vscode.github","_lower":"vscode.github"},"activationEvent":"*"}
[2020-10-27 23:09:50.395] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/github/dist/extension.js
[2020-10-27 23:09:50.506] [exthost] [info] eager extensions activated
[2020-10-27 23:09:50.549] [exthost] [warning] [redhat.java] Accessing a resource scoped configuration without providing a resource is not expected. To get the effective value for '[java]', provide the URI of a resource or 'null' for any resource.
[2020-10-27 23:09:50.583] [exthost] [warning] [redhat.java] Accessing a resource scoped configuration without providing a resource is not expected. To get the effective value for '[java]', provide the URI of a resource or 'null' for any resource.
[2020-10-27 23:09:50.607] [exthost] [info] Extension 'redhat.java' uses a document selector without scheme. Learn more about this: https://go.microsoft.com/fwlink/?linkid=872305
[2020-10-27 23:09:58.946] [exthost] [info] ExtensionService#_doActivateExtension vscjava.vscode-java-test {"startup":false,"extensionId":{"value":"vscjava.vscode-java-test","_lower":"vscjava.vscode-java-test"},"activationEvent":"onLanguage:java"}
[2020-10-27 23:09:58.946] [exthost] [info] ExtensionService#loadCommonJSModule file:///home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-java-test-0.25.0/main.js
[2020-10-27 23:09:59.063] [exthost] [info] Extension 'vscjava.vscode-java-debug' uses a document selector without scheme. Learn more about this: https://go.microsoft.com/fwlink/?linkid=872305
[2020-10-27 23:20:51.348] [exthost] [info] ExtensionService#_doActivateExtension vscode.debug-server-ready {"startup":false,"extensionId":{"value":"vscode.debug-server-ready","_lower":"vscode.debug-server-ready"},"activationEvent":"onDebugResolve"}
[2020-10-27 23:20:51.348] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/debug-server-ready/dist/extension

[ykazakov]

I just cleaned up all settings and started code-sever again

$ rm -rf .config/code-server/ .local/share/code-server/
$ code-server &

Manually installed just 3 extensions from the Java Extension Pack:

• Language Support for Java(TM) by Red Hat v0.61.0
• Project Manager for Java v0.14.0
• Debugger for Java v0.29.0

Reopened the folder with the java file. This caused activation of the extensions as before.

The same symptoms:

• Run | Debug links above the main method appear
• Java outline (Classes, JRE System Library, Reference Libraries) show up correctly
• Syntax highlighting and auto-completion work fine
• Clicking on links "Run" or "Debug" causes the status message "Activating Extensions..." yet nothing happens.

Do not see any obvious problems in the logs:

Remote Server:

[2020-10-27 23:42:04.452] [remoteagent] [error] /home/ubuntu/.local/share/code-server/extensions {"errno":-2,"code":"ENOENT","syscall":"scandir","path":"/home/ubuntu/.local/share/code-server/extensions"}
[2020-10-27 23:43:19.985] [remoteagent] [info] Installing extension: redhat.java
[2020-10-27 23:43:21.097] [remoteagent] [info] Downloaded extension: redhat.java undefined
[2020-10-27 23:43:21.394] [remoteagent] [info] Extracted extension to /home/ubuntu/.local/share/code-server/extensions/.redhat.java-0.61.0: redhat.java
[2020-10-27 23:43:21.394] [remoteagent] [info] Renamed to /home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0
[2020-10-27 23:43:21.397] [remoteagent] [info] Installation completed. redhat.java
[2020-10-27 23:43:21.409] [remoteagent] [info] Extensions installed successfully: redhat.java
[2020-10-27 23:43:29.288] [remoteagent] [info] Installing extension: vscjava.vscode-java-dependency
[2020-10-27 23:43:29.388] [remoteagent] [info] Downloaded extension: vscjava.vscode-java-dependency undefined
[2020-10-27 23:43:29.410] [remoteagent] [info] Extracted extension to /home/ubuntu/.local/share/code-server/extensions/.vscjava.vscode-java-dependency-0.14.0: vscjava.vscode-java-dependency
[2020-10-27 23:43:29.410] [remoteagent] [info] Renamed to /home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-java-dependency-0.14.0
[2020-10-27 23:43:29.412] [remoteagent] [info] Installation completed. vscjava.vscode-java-dependency
[2020-10-27 23:43:29.418] [remoteagent] [info] Extensions installed successfully: vscjava.vscode-java-dependency
[2020-10-27 23:43:33.211] [remoteagent] [info] Installing extension: vscjava.vscode-java-debug
[2020-10-27 23:43:33.453] [remoteagent] [info] Downloaded extension: vscjava.vscode-java-debug undefined
[2020-10-27 23:43:33.483] [remoteagent] [info] Extracted extension to /home/ubuntu/.local/share/code-server/extensions/.vscjava.vscode-java-debug-0.29.0: vscjava.vscode-java-debug
[2020-10-27 23:43:33.483] [remoteagent] [info] Renamed to /home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-java-debug-0.29.0
[2020-10-27 23:43:33.485] [remoteagent] [info] Installation completed. vscjava.vscode-java-debug
[2020-10-27 23:43:33.491] [remoteagent] [info] Extensions installed successfully: vscjava.vscode-java-debug
[2020-10-27 23:44:15.517] [remoteagent] [info] Extension host stdout {
  message: 'Starting Java server with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java --add-modules=ALL-SYSTEM --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED -Declipse.application=org.eclipse.jdt.ls.core.id1 -Dosgi.bundles.defaultStartLevel=4 -Declipse.product=org.eclipse.jdt.ls.core.product -Dfile.encoding=utf8 -XX:+UseParallelGC -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -Xmx1G -Xms100m -noverify -jar /home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0/server/plugins/org.eclipse.equinox.launcher_1.5.700.v20200207-2156.jar -configuration /home/ubuntu/.local/share/code-server/User/globalStorage/redhat.java/0.61.0/config_ss_linux -data /home/ubuntu/.local/share/code-server/User/workspaceStorage/-489189f1/redhat.java/ss_ws',
  level: 'info',
  timestamp: '2020-10-27 23:44:15.514'
}

[2020-10-27 23:44:15.542] [remoteagent] [info] Extension host stdout {
  message: 'Starting Java server with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java --add-modules=ALL-SYSTEM --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED -Declipse.application=org.eclipse.jdt.ls.core.id1 -Dosgi.bundles.defaultStartLevel=4 -Declipse.product=org.eclipse.jdt.ls.core.product -Dfile.encoding=utf8 -XX:+UseParallelGC -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -Xmx1G -Xms100m -noverify -jar /home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0/server/plugins/org.eclipse.equinox.launcher_1.5.700.v20200207-2156.jar -configuration /home/ubuntu/.local/share/code-server/User/globalStorage/redhat.java/0.61.0/config_linux -data /home/ubuntu/.local/share/code-server/User/workspaceStorage/-489189f1/redhat.java/jdt_ws',
  level: 'info',
  timestamp: '2020-10-27 23:44:15.542'
}

Language Support for Java:

(empty)

Remote Extension Host:

[2020-10-27 23:42:06.193] [exthost] [info] extension host started
[2020-10-27 23:42:06.539] [exthost] [info] ExtensionService#_doActivateExtension ms-vscode.js-debug {"startup":false,"extensionId":{"value":"ms-vscode.js-debug","_lower":"ms-vscode.js-debug"},"activationEvent":"onDebugDynamicConfigurations"}
[2020-10-27 23:42:06.540] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/ms-vscode.js-debug/src/extension.js
[2020-10-27 23:42:06.839] [exthost] [info] ExtensionService#_doActivateExtension vscode.debug-auto-launch {"startup":true,"extensionId":{"value":"vscode.debug-auto-launch","_lower":"vscode.debug-auto-launch"},"activationEvent":"*"}
[2020-10-27 23:42:06.839] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/debug-auto-launch/dist/extension
[2020-10-27 23:42:06.842] [exthost] [info] ExtensionService#_doActivateExtension vscode.emmet {"startup":true,"extensionId":{"value":"vscode.emmet","_lower":"vscode.emmet"},"activationEvent":"*"}
[2020-10-27 23:42:06.842] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/emmet/dist/node/emmetNodeMain
[2020-10-27 23:42:06.866] [exthost] [info] ExtensionService#_doActivateExtension vscode.git {"startup":true,"extensionId":{"value":"vscode.github","_lower":"vscode.github"},"activationEvent":"*"}
[2020-10-27 23:42:06.866] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/git/dist/main
[2020-10-27 23:42:06.916] [exthost] [info] ExtensionService#_doActivateExtension vscode.merge-conflict {"startup":true,"extensionId":{"value":"vscode.merge-conflict","_lower":"vscode.merge-conflict"},"activationEvent":"*"}
[2020-10-27 23:42:06.917] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/merge-conflict/dist/mergeConflictMain
[2020-10-27 23:42:06.920] [exthost] [info] ExtensionService#_doActivateExtension vscode.search-result {"startup":true,"extensionId":{"value":"vscode.search-result","_lower":"vscode.search-result"},"activationEvent":"*"}
[2020-10-27 23:42:06.921] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/search-result/dist/extension.js
[2020-10-27 23:42:07.482] [exthost] [info] ExtensionService#_doActivateExtension vscode.github {"startup":true,"extensionId":{"value":"vscode.github","_lower":"vscode.github"},"activationEvent":"*"}
[2020-10-27 23:42:07.482] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/github/dist/extension.js
[2020-10-27 23:42:07.600] [exthost] [info] eager extensions activated
[2020-10-27 23:42:35.973] [exthost] [info] ExtensionService#_doActivateExtension vscode.configuration-editing {"startup":false,"extensionId":{"value":"vscode.configuration-editing","_lower":"vscode.configuration-editing"},"activationEvent":"onLanguage:json"}
[2020-10-27 23:42:35.973] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/configuration-editing/dist/configurationEditingMain
[2020-10-27 23:42:35.983] [exthost] [info] ExtensionService#_doActivateExtension vscode.extension-editing {"startup":false,"extensionId":{"value":"vscode.extension-editing","_lower":"vscode.extension-editing"},"activationEvent":"onLanguage:json"}
[2020-10-27 23:42:35.983] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/extension-editing/dist/extensionEditingMain
[2020-10-27 23:42:35.997] [exthost] [info] ExtensionService#_doActivateExtension vscode.json-language-features {"startup":false,"extensionId":{"value":"vscode.json-language-features","_lower":"vscode.json-language-features"},"activationEvent":"onLanguage:json"}
[2020-10-27 23:42:35.997] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/json-language-features/client/dist/node/jsonClientMain
[2020-10-27 23:42:36.035] [exthost] [info] ExtensionService#_doActivateExtension vscode.npm {"startup":false,"extensionId":{"value":"vscode.npm","_lower":"vscode.npm"},"activationEvent":"onLanguage:json"}
[2020-10-27 23:42:36.035] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/npm/dist/npmMain
[2020-10-27 23:44:12.527] [exthost] [info] extension host started
[2020-10-27 23:44:12.694] [exthost] [info] ExtensionService#_doActivateExtension ms-vscode.js-debug {"startup":false,"extensionId":{"value":"ms-vscode.js-debug","_lower":"ms-vscode.js-debug"},"activationEvent":"onDebugDynamicConfigurations"}
[2020-10-27 23:44:12.694] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/ms-vscode.js-debug/src/extension.js
[2020-10-27 23:44:13.004] [exthost] [info] ExtensionService#_doActivateExtension vscode.debug-auto-launch {"startup":true,"extensionId":{"value":"vscode.debug-auto-launch","_lower":"vscode.debug-auto-launch"},"activationEvent":"*"}
[2020-10-27 23:44:13.004] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/debug-auto-launch/dist/extension
[2020-10-27 23:44:13.008] [exthost] [info] ExtensionService#_doActivateExtension vscode.emmet {"startup":true,"extensionId":{"value":"vscode.emmet","_lower":"vscode.emmet"},"activationEvent":"*"}
[2020-10-27 23:44:13.008] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/emmet/dist/node/emmetNodeMain
[2020-10-27 23:44:13.031] [exthost] [info] ExtensionService#_doActivateExtension vscode.git {"startup":true,"extensionId":{"value":"vscode.github","_lower":"vscode.github"},"activationEvent":"*"}
[2020-10-27 23:44:13.031] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/git/dist/main
[2020-10-27 23:44:13.088] [exthost] [info] ExtensionService#_doActivateExtension vscode.merge-conflict {"startup":true,"extensionId":{"value":"vscode.merge-conflict","_lower":"vscode.merge-conflict"},"activationEvent":"*"}
[2020-10-27 23:44:13.088] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/merge-conflict/dist/mergeConflictMain
[2020-10-27 23:44:13.095] [exthost] [info] ExtensionService#_doActivateExtension vscode.search-result {"startup":true,"extensionId":{"value":"vscode.search-result","_lower":"vscode.search-result"},"activationEvent":"*"}
[2020-10-27 23:44:13.095] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/search-result/dist/extension.js
[2020-10-27 23:44:13.208] [exthost] [info] ExtensionService#_doActivateExtension vscode.github {"startup":true,"extensionId":{"value":"vscode.github","_lower":"vscode.github"},"activationEvent":"*"}
[2020-10-27 23:44:13.209] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/github/dist/extension.js
[2020-10-27 23:44:13.297] [exthost] [info] eager extensions activated
[2020-10-27 23:44:15.062] [exthost] [info] ExtensionService#_doActivateExtension redhat.java {"startup":false,"extensionId":{"value":"redhat.java","_lower":"redhat.java"},"activationEvent":"onLanguage:java"}
[2020-10-27 23:44:15.062] [exthost] [info] ExtensionService#loadCommonJSModule file:///home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0/dist/extension
[2020-10-27 23:44:15.137] [exthost] [info] ExtensionService#_doActivateExtension vscjava.vscode-java-debug {"startup":false,"extensionId":{"value":"vscjava.vscode-java-debug","_lower":"vscjava.vscode-java-debug"},"activationEvent":"onLanguage:java"}
[2020-10-27 23:44:15.137] [exthost] [info] ExtensionService#loadCommonJSModule file:///home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-java-debug-0.29.0/dist/extension
[2020-10-27 23:44:15.174] [exthost] [info] ExtensionService#_doActivateExtension vscjava.vscode-java-dependency {"startup":false,"extensionId":{"value":"vscjava.vscode-java-dependency","_lower":"vscjava.vscode-java-dependency"},"activationEvent":"onLanguage:java"}
[2020-10-27 23:44:15.174] [exthost] [info] ExtensionService#loadCommonJSModule file:///home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-java-dependency-0.14.0/dist/extension
[2020-10-27 23:44:15.481] [exthost] [warning] [redhat.java] Accessing a resource scoped configuration without providing a resource is not expected. To get the effective value for '[java]', provide the URI of a resource or 'null' for any resource.
[2020-10-27 23:44:15.525] [exthost] [warning] [redhat.java] Accessing a resource scoped configuration without providing a resource is not expected. To get the effective value for '[java]', provide the URI of a resource or 'null' for any resource.
[2020-10-27 23:44:15.544] [exthost] [info] Extension 'redhat.java' uses a document selector without scheme. Learn more about this: https://go.microsoft.com/fwlink/?linkid=872305
[2020-10-27 23:44:24.041] [exthost] [info] Extension 'vscjava.vscode-java-debug' uses a document selector without scheme. Learn more about this: https://go.microsoft.com/fwlink/?linkid=872305
[2020-10-27 23:44:31.444] [exthost] [info] ExtensionService#_doActivateExtension vscode.debug-server-ready {"startup":false,"extensionId":{"value":"vscode.debug-server-ready","_lower":"vscode.debug-server-ready"},"activationEvent":"onDebugResolve"}
[2020-10-27 23:44:31.444] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/debug-server-ready/dist/extension
[2020-10-27 23:48:01.199] [exthost] [info] ExtensionService#_doActivateExtension vscode.configuration-editing {"startup":false,"extensionId":{"value":"vscode.configuration-editing","_lower":"vscode.configuration-editing"},"activationEvent":"onLanguage:json"}
[2020-10-27 23:48:01.200] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/configuration-editing/dist/configurationEditingMain
[2020-10-27 23:48:01.212] [exthost] [info] ExtensionService#_doActivateExtension vscode.extension-editing {"startup":false,"extensionId":{"value":"vscode.extension-editing","_lower":"vscode.extension-editing"},"activationEvent":"onLanguage:json"}
[2020-10-27 23:48:01.212] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/extension-editing/dist/extensionEditingMain
[2020-10-27 23:48:01.224] [exthost] [info] ExtensionService#_doActivateExtension vscode.json-language-features {"startup":false,"extensionId":{"value":"vscode.json-language-features","_lower":"vscode.json-language-features"},"activationEvent":"onLanguage:json"}
[2020-10-27 23:48:01.224] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/json-language-features/client/dist/node/jsonClientMain
[2020-10-27 23:48:01.261] [exthost] [info] ExtensionService#_doActivateExtension vscode.npm {"startup":false,"extensionId":{"value":"vscode.npm","_lower":"vscode.npm"},"activationEvent":"onLanguage:json"}
[2020-10-27 23:48:01.261] [exthost] [info] ExtensionService#loadCommonJSModule file:///usr/lib/code-server/lib/vscode/extensions/npm/dist/npmMain
[2020-10-27 23:51:45.160] [exthost] [error] [redhat.java] provider FAILED
[2020-10-27 23:51:45.163] [exthost] [error] Error: The request (id: 23, method: 'textDocument/hover') has been cancelled
	at /home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0/dist/extension.js:1:73458
	at /home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0/dist/extension.js:1:73752
	at Immediate.<anonymous> (/home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0/dist/extension.js:1:74113)
	at processImmediate (internal/timers.js:456:21)
[2020-10-27 23:51:45.604] [exthost] [error] [redhat.java] provider FAILED
[2020-10-27 23:51:45.604] [exthost] [error] Error: The request (id: 24, method: 'textDocument/hover') has been cancelled
	at /home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0/dist/extension.js:1:73458
	at /home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0/dist/extension.js:1:73752
	at Immediate.<anonymous> (/home/ubuntu/.local/share/code-server/extensions/redhat.java-0.61.0/dist/extension.js:1:74113)
	at processImmediate (internal/timers.js:456:21)

[ykazakov]

Seems like this is just a special case of the activation issues #2232.
Downgrading to 3.6.0 solves the problems with activation of Run | Debug:

curl -fsSL https://code-server.dev/install.sh | sh -s -- --version 3.6.0

but the error with activation of vscode-maven-0.21.2 still persist:

[2020-10-28 10:19:10.951] [remoteagent] [info] Extension host stdout {
  message: '[Error - 10:19:10 AM] Oct 28, 2020, 10:19:10 AM Failed to load extension bundles \n' +
    'Load bundle list\n' +
    'org.eclipse.core.runtime.CoreException: Load bundle list\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.BundleUtils.loadBundles(BundleUtils.java:169)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.InitHandler.handleInitializationOptions(InitHandler.java:79)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.BaseInitHandler.initialize(BaseInitHandler.java:53)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.initialize(JDTLanguageServer.java:205)\n' +
    '\tat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n' +
    '\tat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\n' +
    '\tat java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n' +
    '\tat java.base/java.lang.reflect.Method.invoke(Method.java:566)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.ParentProcessWatcher.lambda$0(ParentProcessWatcher.java:123)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)\n' +
    '\tat java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)\n' +
    '\tat java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)\n' +
    '\tat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)\n' +
    '\tat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)\n' +
    '\tat java.base/java.lang.Thread.run(Thread.java:834)\n' +
    'Contains: Cannot extract bundle symbolicName or version /home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-maven-0.21.2/jdtls.ext/com.microsoft.java.maven.plugin/target/com.microsoft.java.maven.plugin-0.21.2.jar\n' +
    'java.nio.file.NoSuchFileException: /home/ubuntu/.local/share/code-server/extensions/vscjava.vscode-maven-0.21.2/jdtls.ext/com.microsoft.java.maven.plugin/target/com.microsoft.java.maven.plugin-0.21.2.jar\n' +
    '\tat java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)\n' +
    '\tat java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)\n' +
    '\tat java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116)\n' +
    '\tat java.base/sun.nio.fs.UnixFileAttributeViews$Basic.readAttributes(UnixFileAttributeViews.java:55)\n' +
    '\tat java.base/sun.nio.fs.UnixFileSystemProvider.readAttributes(UnixFileSystemProvider.java:149)\n' +
    '\tat java.base/sun.nio.fs.LinuxFileSystemProvider.readAttributes(LinuxFileSystemProvider.java:99)\n' +
    '\tat java.base/java.nio.file.Files.readAttributes(Files.java:1763)\n' +
    '\tat java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1225)\n' +
    '\tat java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:727)\n' +
    '\tat java.base/java.util.zip.ZipFile$CleanableResource.get(ZipFile.java:844)\n' +
    '\tat java.base/java.util.zip.ZipFile.<init>(ZipFile.java:247)\n' +
    '\tat java.base/java.util.zip.ZipFile.<init>(ZipFile.java:177)\n' +
    '\tat java.base/java.util.jar.JarFile.<init>(JarFile.java:348)\n' +
    '\tat java.base/java.util.jar.JarFile.<init>(JarFile.java:319)\n' +
    '\tat java.base/java.util.jar.JarFile.<init>(JarFile.java:258)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.BundleUtils.getBundleInfo(BundleUtils.java:302)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.BundleUtils.loadBundles(BundleUtils.java:116)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.InitHandler.handleInitializationOptions(InitHandler.java:79)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.BaseInitHandler.initialize(BaseInitHandler.java:53)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.initialize(JDTLanguageServer.java:205)\n' +
    '\tat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n' +
    '\tat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\n' +
    '\tat java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n' +
    '\tat java.base/java.lang.reflect.Method.invoke(Method.java:566)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)\n' +
    '\tat org.eclipse.jdt.ls.core.internal.ParentProcessWatcher.lambda$0(ParentProcessWatcher.java:123)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)\n' +
    '\tat org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)\n' +
    '\tat java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)\n' +
    '\tat java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)\n' +
    '\tat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)\n' +
    '\tat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)\n' +
    '\tat java.base/java.lang.Thread.run(Thread.java:834)\n',
  level: 'info',
  timestamp: '2020-10-28 10:19:10.949'
}

[ykazakov]

Looks like the activation problems have now been fixed in v.3.7.3.
The only problem lieft is with vscode-maven-0.21.2. I will open a new ticket for that.