swapping condition in "if" statement

Consider this code snippet

import java.util.Date;

  class Test {
     public static void main(String[] args) {

    Date date = null;

    long startTime = System.currentTimeMillis();

    if(date == null) {
        System.out.println("null == date");
    }else {
        System.out.println("date found "+date);
    }

      long stopTime = System.currentTimeMillis();
      long elapsedTime = stopTime - startTime;
      System.out.println(elapsedTime);
    }
}

In if condition I used date==null I wanted to know is there there any reduction in time complexity or vice versa if I choose to write null==date

PS- for both the condition my code is producing output as 0 but what if the code is complex and has heavy operations ?