[pdevr]

I use version managers for Python, Node, Ruby, and others. But for Java, none. I have all the recent versions of Java on my Linux and Windows devices. I download the zip and extract it to a common directory "Java". Setting the path within IDEs is easy, and is mostly unavoidable (regardless of a version manager). Running standalone programs is not that complicated too.

[orthoxerox]

Yes, I have a dead-simple env.bat/env.sh file that sets up specific Java and Maven versions for programs that IDEs struggle with building. I don't see the need to set up an extra tool to install more Java versions, because I don't rebuild my dev environments from scratch every week. My Java 8 installation is three-years old now and has survived a complete Windows reinstallation.

[Zardoz84]

Good luck when you sysadmin apply a decent automated security suite and removes the old Java 8 installation because isn't updated