What's good to learn after completing Java, HTML, CSS, JavaScript?

Question

I have completed the above, what's the next best to learn or what do you suggest...

Answer 1

it will be good for learning:

swing - for providing a graphical user interface
spring - for building web applications
hibernate -for mapping an object-oriented domain model to a relational DB

Answer 2

python

Answer 3

Not a big fan of Java, but as far as I know Spring framework is a popular choice in your case

Answer 4

where can I get those from?