All Questions
6 questions
0
votes
0
answers
561
views
What is the Best Practice for handling multiple Entities that behave identically?
Because I have multiple entities with unique fields, I need multiple repositories for each one even though each Entity will be handled exactly the same. What is the best way to handle these separate ...
- 139
0
votes
3
answers
270
views
Java Inheritance Problem
I have the finance application where we can have different types of transactions, like balance enquiry, funds transfer, and pin change etc. Now the Transaction is a base class, and there are specific ...
- 321
28
votes
7
answers
10k
views
Polymorphism case study - Design pattern for morphing?
Imagine two classes:
class Person {
MarriedPerson marry(Person other) {...}
}
class MarriedPerson extends Person {
}
The idea is that a Person is automatically "morphed" to type MarriedPerson ...
- 429
3
votes
2
answers
178
views
When covariance becomes an issue, how can I restructure my code and still be clean?
Suppose I have the following interfaces, GameObject and Enhance.
GameObject:
public interface GameObject {
void prepare();
void use();
void cleanup();
}
Enhance:
public interface ...
user347963
0
votes
3
answers
2k
views
Are objects that can pass more than one IS-A test really polymorphic?
A number of tutorials on polymorphism state that "Any object that can pass more than one IS-A test is considered to be polymorphic." I wonder what they mean by that, and if that's even a true ...
6
votes
2
answers
6k
views
What is the process of determining which method in a class hierarchy should execute known as?
I thought I understood inheritance and polymorphism, but I was given this question, and I can't, for the life of me, figure out what the proper answer is or what they're trying to get at:
The ...
- 69