what's the point of java constructor?

Question

So I\'m learning java. I\'m one month in and I just learned about constructors. But I don\'t see the whole purpose of creating one. Why and when would I ever want to use one

Answer 1

You use a constructor to create new objects. Yes, you can write Java just using static methods - but then you're really not writing object-oriented code, and you'll have a hard time using much of the standard library, either.

Most of your time you should be working with and thinking in terms of objects - and they need to be constructed before they can be used... and that's where constructors come in. They create an object, often with parameters specifying the initial state or other important information about the object.

To be honest, it's probably not worth worrying about them just yet, if you don't see the point yet. It's likely that as you learn more, you'll naturally start using objects more (maybe collections to start with, for example) and you'll get the hang of it. Rest assured, it is important to have constructors in Java, but I'm sure you'll understand why in the course of time. (Of course, if this answer has helped you to appreciate their value already, I'm glad - but if not, don't worry :)