Java class relationships

In Java, we can reuse our code using an Is-A relationship or using a Has-A relationship . An Is-A relationship is also known as inheritance and a Has-A relationship is also known as composition in Java.19 Tem 2019

Object oriented programming generally support 4 types of relationships that are: inheritance , association, composition and aggregation . All these relationship is based on “is a” relationship, “has-a” relationship and “part-of” relationship. In this article we will understand all these relationships.

The common relationships among classes are association, aggregation, composition, and inheritance .

A relationship in Java means different relations between two or more classes . For example, if a class Bulb inherits another class Device, then we can say that Bulb is having is-a relationship with Device, which implies Bulb is a device.1 Ara 2021