Question

So say I have this class:

public class PositionList {
    private Position[] data = new Position[0];
    private int size = 0;

Now lets say I create a new PositionList object with the default constructor, so no arguments like so:

PositionList list = new PositionList();

Does the new list object have any attributes? Does it have a size component or a data component? What are its characteristics?

Answer 1

Yes, it will use your initializers. So the size will be zero (it’s default value, so your setting it to 0 is redundant) and data will be an array with 0 elements (distinct from null).