How to learn it in few days ?

Answer 1

Java is a huge thing, there's no way you master that language within days, even those who are using Java professionally never stop learning.

But if you refer to Java course in SoloLearn then you might finish it within days, or a day perhaps, but what is covered here is far from Java as a language itself : )

Answer 2

I will recommend Head First Java. Its very easy for beginners and if you have done some other programming language C or C++ you will find it extremely joyful. And this book will give you a strong foundation on the OOPs concept.

The Java™ Tutorials
When you say that I want to learn Java quickly, the question that you need to ask yourself is Why do I want to learn java?
Is it because you want to develop an android application?
Is it because you want to contribute to a project that you use?
Is it because your curriculum requires you to do so?

The best way to learn in my opinion is to actually use it, I'd suggest you start with an application of your choice. If you're building a GUI you will encounter Event Handlers, the syntax will no doubt seem perplexing at that time but then you will understand what anonymous inner classes are and how they work.

Read Here:- http://crbtech.in/Java-Training/7-important-ways-learn-java-programming-faster/

Answer 3

...young dreamer.

Answer 4

but I will