Can we have an interface create objects of another interface in UML Class Diagrams?
I've made the following class diagram with PlantUML. But it feels weird to have a interface instantiate objects of another interface. Is this allowed in UML?
The other approach I see, is to get rid if the interface and have FactoryA create ProductA and so on.
It is perfectly legal that an interface creates instances of another interface.
In UML the interface is a contract. The contract would then mean that instances of a class realizing the first interface shall create instance of classes realizing the second one.
This may sound very abstract, but in simpler words, it just means that the first interface defines the contract for a set of factory classes. This looks like a simplified variant of the abstract factory pattern
Remark: the «create» is a usage dependency and not an association, so there should be no multiplicities on its ends. And the keyword should be between «».
- Is there a common design pattern for making a collection class page-able?
- Create a Rock-Paper-Scissors game using a class for each
- Make sure an object with a particular key is statically created once
- Does JavaScript have the interface type (such as Java's 'interface')?
- Get PHP class property by string
- What's a good maintainable way to name methods that are intended to be called by IBActions?
- Subclass of pathlib.Path doesn't support "/" operator
- Subclass `pathlib.Path` fails
- What is the advantage of initializing static variable in a static constructor instead of direct assignment of value
- The Liskov Substitution Principle (LSP) in UML class diagrams
- Can anyone broadly explain abstract class and interface?
- Python class constant using class init method?
- How do I change a variable while inheriting?
- In SOLID, what is the distinction between SRP and ISP? (Single Responsibility Principle and Interface Segregation Principle)
- How to make a function accessible from both the object and the class itself?
- Does a TreeMap change ordering dynamically?
- How can I print an Object of a Vector when this last is into a Main-Vector?
- Stuck on Card/Deck exercise from Java official tutorial
- illegal reference to static field from initializer
- Python - Parent and Child Class inheritance - attribute inheritance
- Is it possible to override the Getter/Setter functions in a powershell 5 class?
- using sql joins vs using separated methods in java
- How to access one object from another form in C#?
- What are Mixins (as a concept)
- Multiple classes in single file
- Is there any reason to manually `return` in a constructor function?
- java - do objects created in methods only live for the life of the method execution?
- What is the difference between loose coupling and tight coupling in the object oriented paradigm?
- Classes defined by using lambda in Java
- How to implement an abstract class in Go?