code: public synchronized void add( int handle , String messageID , int deliveryMode , LocalQueue destination )
      {
      	// Create a new transaction item
      	TransactionItem item = new TransactionItem(handle,
      	                                           messageID,
      	                                           deliveryMode,
      	                                           destination);
      	items.add(item);
      }
docs: Add an handle to the list
  @param handle