This method would create a one shot vibration using VibrationEffects

OneShotVibration.java

@RequiresApi(api = Build.VERSION_CODES.O) 
private void createOneShotVibrationUsingVibrationEffect() {
   // 1000 : Vibrate for 1 sec
   // VibrationEffect.DEFAULT_AMPLITUDE - would perform vibration at full strength
   VibrationEffect effect = VibrationEffect.createOneShot(1000, VibrationEffect.DEFAULT_AMPLITUDE);
   vibrator.vibrate(effect);
 }