How much time is required to learn java??

Answer 1

Depends on how fast you catch and how much time you spend a day on it...

Answer 2

3 months max for basics, if you want to be practical. If you can't after that, you should try a different language unless you wanna stick to it

Answer 3

Depends from person to person. I still can't get the hang even after a few months while some people get it in 2 days