Answer 1

~ swim ~

exactly.

now, it makes me wonder what kind of thing his is working on, because I've never feel the need to have function like that in my code xd

Answer 2

Gangadhar

If you're working with classes and objects than you can also use static initialization block which will only executed when the first object is created.

Answer 3

~ swim ~

That's a really good example!

well, still I believe it's completely depended upon what approach we use to implement this kind of functionality.