Java double casting (int[]) (int[])

Question

What does (int[]) (int[]) do ?

private Object[] slots = new Object[8192];

int[] block = (int[]) (int[]) this.slots[0];

Answer 1

In this case, the second cast does nothing. It is the same as typing

private Object[] slots = new Object[8192];

int[] block = (int[]) this.slots[0];
block = (int[]) block;

EDIT:

To clarify, the "second" cast that I am referring to is the one on the left.