All Questions
8 questions
0votes
2answers
890views
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
0votes
1answer
535views
How to design inheritance from abstract class which is not initiated but seemingly must be initiated?
I need to design a program in Java which calculates arithmetic expressions (only addition or subtraction). Requirements: 1) abstract class Expression which contains abstract method calculate()...
- 167
3votes
1answer
522views
Best design for classes that draw objects but do not inherit from JPanel
I'm doing the exercise 10.1, page 476 from the book Java: How To Program, Early Objects by Paul and Harvey Deitel (10th Edition). Modify the MyLine, MyOval and MyRectangle classes of GUI to create ...
- 167
4votes
1answer
5kviews
Designing generic type inheritance hierarchy
I have now put another rephrased version of original question as requested by the user in the comments with class names mimicking real world scenario of postal office (though I dont know how real ...
- 301
6votes
1answer
2kviews
Access methods from two interfaces's implementation in a Class
I am trying to implement the following pattern in a Cache layer. I'm splitting the implementation of possible Cache methods such as getUsers() in UserCache Class, getLikes() in PostsCache class. But ...
3votes
2answers
716views
Correct way to extend a hierarchy tree
I have the following tree currently to be implemented in Java. My problems are the following: How can I go about addressing the fact Admin needs to have all tier 4 logic from both branches of the ...
- 207
1vote
1answer
93views
Object passed to super() referenced by subclass - Any Violations?
This is the code in question, comments point it out: class Actor extends Entity { private MutableVector2f position; private MutableIdentity identity; public Actor(MutableVector2f ...
- 953
1vote
1answer
224views
Pattern to share fields in inheritance
I'm trying to figure out the best way to solve a design issue. I have to be able to clone (I'm cloning them to Apache HttpClient) different types of HttpServletRequest (POST, GET...) and then send ...
- 113
