Question

Here’s what I’m thinking. So lets say I have a class called intro and I want to do something when it starts and finishes. I’m wondering how could I do something like this:

public Main(){
    //Calls the object that overrides its own methods
    new Intro(){
        @Override
        public void onStartIntro(){
        }

        @Override
        public void onFinishIntro(){
        }
    }

What would need to happen in the Intro class to enable something like this?

Answer 1

just create an abstract class to force overriding of the methods (but a non-abstract class with non-final methods will also do)

abstract class Intro
{
    abstract void onStartIntro();
    abstract void onFinishIntro();
}