What is the best approach on upgradation of a mule integration application from mule runtime 1.4 to 2.0 and java 8 to java 11?

Question

I am currently involved in a project, that requires migration of 3.5 to 4.x, 4.14 is working fine. I am raising this question because, mule 2 is supporting Java 11, while mule recommended approach is to work on adoptopenjdk 8.0

https://docs.mulesoft.com/release-notes/mule-runtime/mule-4.2.0-release-notes

Answer 1

It is not clear exactly what is the question, however migrating from Mule 4.1.x to 4.2.x doesn't require usually changes to applications. You are free to use Java 8 or 11, though 8 is recommended.