The whole structure with Java 11 has changed. Java is now a modular platform, where you can create your own “JRE” distribution with specifically the modules that you need to run your application.
The release notes at https://www.oracle.com/technetwork/java/javase/11-relnote-issues-5012449.html have the following sentence:
In this release, the JRE or Server JRE is no longer offered. Only the JDK is offered. Users can use jlink to create smaller custom runtimes.
Documentation about jlink: https://docs.oracle.com/en/java/javase/11/tools/jlink.html
And another article about it: https://medium.com/codefx-weekly/is-jlink-the-future-1d8cb45f6306