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.
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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.
Read moreWhat is the difference between inheritance and aggregation in Java?
With aggregation we create a new class, which is composed of existing classes. With inheritance we create a new class, which is based on existing class, with some modifications . subclasses. In the Java language, classes can be derived( רזגנ (from other classes, thereby inheriting fields and methods from those classes.
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Dependency: Aggregation implies a relationship where the child can exist independently of the parent . For example, Bank and Employee, delete the Bank and the Employee still exist. whereas Composition implies a relationship where the child cannot exist independent of the parent.14 Mar 2022
Read moreWhat is aggregation in Java?
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.29 Oca 2019
Read moreWhat is an example of aggregation in Java?
Simple Example of Aggregation op=new Operation(); int rsquare=op. square(radius); //code reusability (i.e. delegates the method call).
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