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An IS-A relationship is inheritance. The classes which inherit are known as sub classes or child classes. On the other hand, HAS-A relationship is composition.
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.
class Apple extends Fruit {}On the other hand, composition means creating instances which have references to other objects. For example, a room has a table. So you will create a class room and then in tha...
Content Under CC-BY-SA license What is the difference between "IS -A" relationship and "HAS-A ...
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Dec 8, 2021 · Java IS-A and HAS-A Relationship play a significant role in all applications. IS-A relationship is declared with the "extends" keyword and …
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Oct 12, 2023 · Inheritance is an IS-A relationship, and Composition is a HAS-A relationship. Both the concepts differ in a certain way but have the same goal, reusability. Let us see the difference between these two concepts below. IS-A …
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Feb 1, 2018 · Has-a means that the Class in question 'has a' field of a type. Is-a means that the Class extends from a superclass or implements an interface. The instanceof operator would return true if tested against a class in the this case.
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Sep 16, 2024 · In Java, a Has-A relationship essentially implies that an example of one class has a reference to an occasion of another class or another occurrence of a similar class. For instance, a vehicle has a motor, a canine …
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