Class Question

Is there any difference in doing something like


public class Blah extends Sprite
{
      var _test:TextField = new TextField();

      public function Blah():void()
      {
      }
}

vs


public class Blah extends Sprite
{
      var _test:TextField;

      public function Blah():void()
      {
             _test = new TextField();
      }
}

just wondering which method is correct (if there is a correct way)