Aggregation and Composition are subsets of association meaning they are specific cases of association . 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.
Read moreWhy do we use aggregation in Java?
Aggregation helps in reusing the code . Object B can have utility methods and which can be utilized by multiple objects. Whichever class has object B then it can utilize its methods.
Read moreWhy do we use aggregation in Java?
Aggregation helps in reusing the code . Object B can have utility methods and which can be utilized by multiple objects. Whichever class has object B then it can utilize its methods.
Read moreWhat is aggregation in OOP with example?
An aggregate object is one which contains other objects . For example, an Airplane class would contain Engine, Wing, Tail, Crew objects. Sometimes the class aggregation corresponds to physical containment in the model (like the airplane).
Read moreWhat is aggregation in Java example?
Aggregation in Java is a relationship between two classes that is best described as a “has-a” and “whole/part” relationship . It is a more specialized version of the association relationship. The aggregate class contains a reference to another class and is said to have ownership of that class.
Read moreWhat is whole part relationship in Java?
Aggregation in Java is a relationship between two classes that is best described as a “has-a” and “whole/part” relationship. … The aggregate class contains a reference to another class and is said to have ownership of that class. Each class referenced is considered to be part-of the aggregate class.
Read moreIs a part of relationship in OOP?
In OOP, IS-A relationship is completely inheritance . This means, that the child class is a type of parent class. For example, an apple is a fruit. So you will extend fruit to get apple.
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