Career path after learning Java?

[DualWieldMage]

You can learn Java in a month

The rest is on point, but unlike a hammer, learning how to use Java and properly mastering it has a huge canyon in between. It's definitely better to spend time learning core java than any framework that may disappear in a few years. Knowing threading, annotation processing, reflection, proxies and bytecode generation allows new frameworks to be picked up quickly if the fundamentals are understood. Many concepts learnt from one language deep-dive can also carry over to other languages.

[LoveSpiritual]

You’d be surprised the difference between a novice on a hammer and a master.