Unable to point to the JDK in a docker container

[luukvhoudt]

It might not be an issue because I think it's possible to configure this extension so it can the JDK binary's from a docker container. However I also see the possibility that there is some issue with the extension in the way it is facilitating the configuration of the JDK.

Please have a look at this Stack Overflow topic where we try to figure out how to configure the extension and docker container, to make them work together.

Environment

• Operating System: Ubuntu 20.10
• JDK version: 1.8
• Visual Studio Code version: 1.54.3
• Java extension version: 0.76.0

Steps To Reproduce

1. Follow all the steps described in the Stack Overflow question until update release to marketplace #1 in a valid Java project.

Current Result

Errors, see stack overflow question.

Expected Result

A working Java Language Server and Java code being compiled.

Additional Information

The following issues might be related: #1801 and #1754

I was not able to get Java Language Server logs, I tried but got:

Command 'Java: Open Java Language Server Log File' resulted in an error (command 'java.open.serverLog' not found)

Attached files:

• developer-console.log

[fbricon]

You seem on the right track, except you need a JDK 11 (minimum) to run vscode-java. You can mount other volumes pointing to other JDKs if you need to compile a project with a particular version. See https://github.com/redhat-developer/vscode-java/wiki/JDK-Requirements#setting-the-jdk

[luukvhoudt]

Thanks @fbricon you made me realize that there is a difference between the JDK version and the Java version, I kinda thought that it was the same thing. Thanks to this discovery I managed to make it work, however it's not really what I was hoping for.

Have a look at the answer I posted on the Stack Overflow topic. To summarize, I didn't really need to create a custom java binary what spins up a docker container with a JDK image. I managed to extract the JDK-files from the image and copy it to my OS its filesystem, where after I pointed the extension to it.

Not sure if the Stack Overflow answer closes this issue, because it doesn't really use the docker container. I'm quite sure it's possible because IntelliJ has this functionality available.