In Java, we have two types of relationship: Is-A relationship: Whenever one class inherits another class, it is called an IS-A relationship. Has-A relationship: Whenever an instance of one class is used in another class, it is called HAS-A relationship.
Read moreWhat is composition in oops?
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.
Read moreWhat is the difference between aggregation and association in Java?
Association refers to “has a” relationship between two classes which use each other. Aggregation refers to “has a”+ relationship between two classes where one contains the collection of other class objects.
Read moreIs a relationship aggregation or composition?
1. Association between two objects that defines the “has-a” relationship is referred to as Aggregation . A specific type of Aggregation that implies ownership is referred to as Composition.
Read moreHow do you identify Aggregation and composition in Java?
In Aggregation, objects can remain in the scope of a system without each other. In a composition relationship, objects cannot remain in the scope of a system without each other .
Read moreWhat is the difference between composition and Aggregation give an example?
Aggregation implies a relationship where the child can exist independently of the parent . Example: Class (parent) and Student (child). Delete the Class and the Students still exist. Composition implies a relationship where the child cannot exist independent of the parent.
Read moreWhat is difference between Aggregation and composition?
Composition is a strong Association. Aggregation means one object is the owner of another object. Composition means one object is contained in another object . The direction of a relation is a requirement in both Composition and Aggregation.
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