Choosing the Right VS Code Extensions for Java Development with Ant Build

Question

I have an existing Java project built using the Ant build engine. I see there are many extensions for VS Code that provide various levels of Java support. I saw one each from both Microsoft and Oracle. But do I need both or are they duplicates? Do any of the other extensions come in handy?

The application is self-contained and is expected to mainly run on Linux (unknown distro or version) and the latest JRE.

I've asked in a Discord on VS Code, but got no answer.