My simple suggested to anyone is "do what you love". Regarding the tools of choice if you are good at it you will be successful no-matter where. Java is a good career in the enterprise world
however JAVA when you learn JAVA you have to know JAVA plus many other things related to development such as Testing / continuous integration / database etc.

I suggest people going to development to take a software aptitude test to see how quick their brain works ...the quicker it works the faster the learning curve.

its like being a football player even though you are a defender you still need to know how to shoot a penalty when needed.

Good luck.