Building a software federation means composing independently developed domains, by composing their meta-models. The UML standard, which is well supported by tools, has been found convenient for ...

Compare inheritance and composition, the two fundamental ways to relate Java classes, then practice debugging ClassCastExceptions in Java inheritance.

Sealed classes in Java let developers limit the creation and use of subclasses and preserve the class hierarchy. Here is how sealed classes in Java work.

Not a UML expert either, but as I understand it the example is not composition, so in all of these cases it should show just the aggregation arrow: Composition implies a relationship where the child ...

Understand the key concepts behind composition and inheritance that allow you to build reusable and flexible types in your .NET applications.

In issue #518 it was proposed to change the relationship between decorator and target (in the code example between Troll und SmartTroll) from a composition to an aggregation with the argumentation ...