code: public void removeHead( int total ) {
  		for( int j = total; j < size; j++ ) {
  			data[j-total] = data[j];
  		}
  		size -= total;
  	}
docs: Removes the first 'total' elements from the queue. Element 'total' will be the new start of the queue
  
  @param total Number of elements to remove from the head of the queue