get json object without array name in android 2 -

i've json this

array (   'status' => 'ok',   'categories' =>    array (     'sepeda' =>      array (       83 => 'sepeda mtb',       'fullbike' =>        array (         370 => 'mtb',         371 => 'roadbike',         374 => 'fixie',         375 => 'sepeda lipat',         378 => 'city bike',         380 => 'bmx',         382 => 'onthel',       ), 

that wanna ask , how code "fullbike" ?? advice , need , thanks

try {      //get full bike json object first      jsonobject jsonobject = response.getjsonobject("categories").getjsonobject("sepeda").getjsonobject("fullbike");      //get inner values       string mtb = jsonobject.getstring("370");       log.e("response", mtb);            } catch (jsonexception e) {       e.printstacktrace();  }