Where should I put the public static void main(String[] args) method? [closed]

Question

I don't think it has any effect on the program output, but what class should I put the

public static void main(String[] args) {
    //...
}

method in my program? Is it better form to create a separate class, or put it in a class that does something else? If I should put it in a class that does something else, which one? Does it matter? This is really just a conventions thing. Normally I create a separate class or put it in the class that deals with the gui, but I would like to know the right way of doing it.

Answer 1

If you are writing very short programs (e.g. simple algorithms), it may seem to be more convenient to just add your main method to the class containing some basic program logic. However, for greater projects it is very helpful to separate your main method from business logic/database access/anything else that should be working as an encapsulated entity.

Main method should just give you the beginning of the chain, so that you could easily follow the workflow of your program from the very beginning. Including logic (even simple number conversion/string operations) in class containing main method could cause some unnecessary chaos, try to separate everything what you don't really need there and put it in helper classes.