Passing a class instance into another class

Question

I've looked everywhere but I can't seem to find an answer to this.

If I have one class (say, a Resource class) and another class (say a Sprite class) and each time I create a sprite, I pass in a reference to my Resource class (because it's required for some function) - am I correct in assuming, that all this does is creates a reference to this instance of said class?

So - if my Sprite constructor is this:

public Sprite(Resource res){

res.doSomething........

}

And I create 100 sprites, then this isn't going to cause problems because it's just passing in a reference or 'pointer'? (as opposed to creating a new instance each time).

Simple enough question I know, but I want to make sure I understand what's happening here and I couldn't find the answer to this anywhere.

Answer 1

Yes, if you create a new Sprite and pass it an existing Resource , the new Sprite will just have a reference to your original object.

So 100 Sprites would have 100 references to your 1 Resource.

Answer 2

是的，您每次必须创建该类的new实例来调用该特定instance. doSomething() instance.