What is aggregation and composition in Java with examples?
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Herein, what is aggregation and composition?
In both aggregation and composition object of one class "owns" object of another class. But there is a subtle difference: Aggregation implies a relationship where the child can exist independently of the parent. Composition implies a relationship where the child cannot exist independent of the parent.
Secondly, what is composition in object oriented programming? Composition is one of the fundamental concepts in object-oriented programming. It describes a class that references one or more objects of other classes in instance variables. This allows you to model a has-a association between objects. You can find such relationships quite regularly in the real world.
Also asked, what is aggregation explain with example?
Aggregation is a way of composing different abstractions together in defining a class. For example, a car class can be defined to contain other classes such as engine class, seat class, wheels class etc. Other examples of aggregation are: A window class containing menu class, check-box class etc.
What is segregation and aggregation in Java?
Aggregation is having a bunch of objects in another object. For example, you aggregate a bunch of items in an ArrayList. Segregation typically deals with separation of concerns. For example, you segregate presentation from the view in MVC.