Method receivedAddRequest

java/Chapter 8/Question8_7/User.java:61–66

(AddRequest req)

	}
	
	public void receivedAddRequest(AddRequest req) {
		int senderId = req.getFromUser().getId();
		if (!receivedAddRequests.containsKey(senderId)) {
			receivedAddRequests.put(senderId, req);
		}		
	}
	
	public void sentAddRequest(AddRequest req) {
		int receiverId = req.getFromUser().getId();