Why can you cast int[] to Object, but not to Object[]?

Question

So this works:

int i;
Object a  = (Object) i;
int[] t;
Object b = (Object) t;
String[] s;
Object[] t = (Object[]) s;

But this does not:

Answer 1

An object is a class instance or an array.

It is stated in The JLS section 4.3.1.

Now, int[] is an array, which is an Object.

String[] s; 

and

int[]

differ in following way:

Former can point to an array of String objects, but latter can point to an array of primitive int.