All Questions
6 questions
2
votes
5
answers
783
views
How does inheritance lead to higher coupling than composition?
One major reason for using composition over inheritance is, that inheritance leads to higher coupling. How is that?
In both cases members are exposed to the subclass (in case of inheritance) or ...
- 129
3
votes
2
answers
179
views
Composing and Inheriting from the Same Type
To start off with an example: I have a read-only Repository used for getting arbitrary values. This behavior can be implemented multiple ways.
I also want to allow opt-in mutation of the repository's ...
- 424
4
votes
1
answer
2k
views
Delegate vs Forwarding in Java OOP
I'm reading some article about "prefer composition over inheritance", and heard about Forwarding and Delegation. After search for the different I found some source:
https://en.wikipedia.org/wiki/...
- 149
10
votes
1
answer
803
views
Is there a situation where it would be better to use weak references instead of simple composition?
Although the Java docs specify, that Weak references are primarily for canonicalizing mappings, you will find many, many, many people on the internet stating, that the WeakHashMap is perfect for ...
- 240
7
votes
3
answers
425
views
Composition of two classes with common inheritance root
Hope your day is going well.
I want to make the following composition of two objects with the same inheritance root:
There will be 3 basic operations on the Wallet class: add, getCards and ...
- 461
2
votes
1
answer
1k
views
Internal exposure of implementation details on inheritance
I'm reading the "Effective Java" book which suggests to favor composition over inheritance. The example it gives shows something like this:
public class InstrumentedHashSet<E> extends HashSet&...
- 516