Why, yes. Yes they are.

As opposed to half-assed objects?  It's an object.

Lee Weiner
lee AT leeweiner DOT org

Yes, it would appear as if the array object were an instance of

class A implements Cloneable, java.io.Serializable {
    public final int length = X;
    public Object clone() {
        try {
            return super.clone();
        } catch (CloneNotSupportedException e) {
            throw new InternalError(e.getMessage());
        }
    }
}
<http://java.sun.com/docs/books/jls/second_edition/html/arrays.doc.html#64347>