How to update libraries in sdk?
- Ant or Gradle?
- JME libs or Custom libs?
I guess one could copy the JARs to your project. I’m unsure can you really change the template libraries. But at least your projects you should be able to change.
JARs you can copy from Maven central for example. Just remove the old ones and add the new ones.
And I do recommend Gradle instead of Ant. It makes a lot of these things easier.
Although @tonihele already stated it. I would highly recommend using gradle maven. Just as a note, the sdk is not required (although handy in many situations), i use gradle with IDEA Ultimate for all of my JME projects. Any IDE that supports maven or gradle will work just fine for JME development.
And to add still, there is a Gradle game project template in the SDK. So that is probably the easiest way to get started on that road.