The composition is a design technique in java to implement a has-a relationship . Java Inheritance is used for code reuse purposes and the same we can do by using composition. The composition is achieved by using an instance variable that refers to other objects.
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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.
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).
Read moreWhat is aggregation and composition in Java?
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
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