All Questions
91 questions
2
votes
4
answers
3k
views
I wrote a class with "init" method. Should I call it from other class methods? Or leave it to the object user? (Code Design)
I have a java class with an init method. It's different from the constructor. The constructor just initializes the variables/fields. The init method connects to a database and performs some ...
- 131
0
votes
2
answers
110
views
Logical architecture based on modules and SPI
I'm looking for the most proper way to design a modular application with ServiceLoader.
--MAIN IDEA--
module app.view | exports app.view.View interface that defines UI api
module app.engine | exports ...
- 39
0
votes
3
answers
3k
views
DDD - storing and retrieving entities of an aggregate from the outside
In my doctor's appointment booking system, I identified the following entities:
Doctor
Patient
Appointment
I also identified an aggregate, which is Doctor (aggregate root) and Appointment. It's an ...
- 23
1
vote
2
answers
122
views
Designing UI module for an application
I have an UI module that will expose only one class - UserInterface. The class will be responsible for collecting user input and providing output (command line UI style). From logical way of thinking, ...
- 33
0
votes
2
answers
743
views
Payment Processor using polymorphism?
I am writing a payment Processor class, then will take different payment objects in input and talks to external services to process payment.My class is designed using polymorphism as follow:
public ...
- 111
0
votes
2
answers
890
views
Object Oriented Design for chess
Recently I came across some article on Chess OOPS design.Following is some snippet from it:
public class Chess {
ChessBoard chessBoard;
Player[] player;
Player currentPlayer;
List<...
- 321
9
votes
2
answers
2k
views
Does OOP overemphasize the importance of noun and thus put action/verb in the less importance position ？ [closed]
Steve yegge wrote an article called "Execution in the Kingdom of Nouns" back in 2006, 14 years later I still find the points he made valid. For example, "Action is what gives life its ...
- 3,307
1
vote
1
answer
609
views
Pipeline design pattern and immutability
I'm developing a backend service that is supposed to process items in a pipeline-fashion. Each stage is essentially a Function<IN, OUT>. So the current stage's input is the previous stage's ...
- 89
0
votes
1
answer
510
views
Extension of classes - Where to put behaviour - How much direct-access is allowed
At this point i would exclude the inheritance....
So the question is about more like extend into a seperate class or into the class which should be extended, both play in the composition-league.
So ...
- 167
1
vote
1
answer
476
views
Design Chess - Object Oriented Design
I am trying to design online chess game(figuring out required classes). Need some suggestion on choosing better option to validate the move. So, lets say, I have below class
Option 1 :
My ...
- 159
-1
votes
1
answer
1k
views
Difference between objects and data structures?
So I was reading https://hackernoon.com/objects-vs-data-structures-e380b962c1d2
and I stumbled upon this quote :
"A Person data structure has a first name, last name, and phone number. A Person ...
- 109
-5
votes
1
answer
81
views
How to organize the following code in a better way? [closed]
I've a class which performs an operation (say A). I've few logic which has to happen before A happens and few during A happens and few after A has
happened.
interface ILaunchInterface {
public ...
- 366
3
votes
2
answers
1k
views
Field variable VS method variable
hey i have a difficult question.
class DatabaseHelper
{
Database db;
String defaultShema;
public DatabaseHelper(Database db, String defaultSheme)
{
this.db = db;
this....
- 167
4
votes
4
answers
4k
views
Is Template design pattern a bad practice due to inheritance?
I have been using Template Design pattern in my code for implementing CRUD procedures for different resources.
There are some steps which are same for many resources and some which need some addition/...
- 603
2
votes
3
answers
320
views
Is this design with globals bad?
I designed a Snakes and Ladders game. I divided into a reasonable amount of classes and I believe I did a good job regarding the OOP design.
I have one question about a decision I made for the design,...
- 131