I sympathize with your problems, I also had to juggle multiple versions for a period of time on multiple projects. Docker thankfully eliminated that and even wi

I sympathize with your problems, I also had to juggle multiple versions for a period of time on multiple projects. Docker thankfully eliminated that and even without it the most you have to do now days is to point "$JAVA_HOME" to another folder. Java and it's ecosystem is better than ever and the language updates since java 8 are great to work with. The JVM is great. Spring boot finally removed most of the the multiple days config issues. Everything is mature, every problem has one or more library to solve it.