Question: is jdk 11 compatible with jdk 8?
Answer: At the moment, Java 8 and Java 11 are the LTS (long-term support) versions. ... What's interesting with Java 11, aside from all the added, removed, and deprecated features, is that it won't be supported by Oracle. In its place, the OpenJDK community will provide long-term support, most probably in the form of AdoptOpenJDK.