Is the following array defined as null or with 0 length?

Explanation

The variable is defined with NULL value.  It could be initialized in the same statement by writing it like that if required to just make it with 0 length

int temp_array[] = {};

or

int temp_array[] = new int[0];

or it could be initialized in a separate statement

int temp_array[];

temp_array = new int[0];