Updating to App Engine Java 11 Standard Environment: Project Facets in Eclipse

Question

I wanted to check out the App Engine Java 11 Standard Environment and tried to switch my project to Java 11. But in the Project Facets, I can only choose JRE7 or JRE8.

Can I do something other than wait for an update of the Google cloud tools for eclipse?

Answer 1

CT4E does not yet support Java 11. Work is underway to support Java 11.

Answer 2

There are no plans to extend Cloud Tools for Eclipse with support for Java 11/17 App Engine. [1]

Plugin maintainers are recommending using Maven/Gradle plugins instead, and reading Java 11/17 migration documentation.

Note that IntelliJ plugin won't be updated either. [2][3]