Polymorphism is one of theOOPsfeature that allows us to perform a single action in different ways. For example, lets say we have a classAnimalthat has a methodsound(). Since this is a generic class so we can’t give it a implementation like: Roar, Meow, Oink etc. We had to give a...
Runtime Polymorphism In this tutorial, we will see about Polymorphism in java. Polymorphism in java is one of core Object oriented programming concepts with Abstraction, encapsulation, and inheritance. Polymorphism means one name many forms. In Java, polymorphism can be achieved by method overloading...
Encapsulation With Example And Program In JAVA Encapsulation is one of the four key concepts in OOPS (Object Oriented Programming) namelyInheritance, Encapsulation,Abstractionand Polymorphism. Following definition helps you to understand the concept of encapsulation: Encapsulation is a process of hiding the...
To understand the concept of Polymorphism in CPP, we will recommend you to visit here:Function Overriding, where we have explained it from scratch. Code: #include <iostream> using namespace std; //defining the class Addition to overload the method sumOf() to explain the concept of Polymorphi...
In the above examples, java compiler doesn’t know the actual implementation class of Shape that will be used at runtime, hence runtime polymorphism. 4. Inheritance Inheritanceis the object-oriented programming concept where an object is based on another object. Inheritance is the mechanism of co...
public void setSalary(long salary) { this.salary = salary; } public int getId() { return id; } public void setId(int id) { this.id = id; } } package com.journaldev.composition; public class Person { //composition has-a relationship ...
Hello Java programmers, if you are wondering how to get the first and last characters from a given String then you have come to the right place. In this Java tutorial, I will show you how you can use charAt() method from the String class to retrieve characters from String for any ...
Note: If you are looking for a real-life example of encapsulation then refer this guide:OOPs features explained using real-life examples. For other OOPs topics such asinheritanceandpolymorphism, referOOPs concepts Lets get back to the topic. ...
Also, I have used thelambda expressionto implement our Comparators as oppose to theAnonymous classwhich we used earlier. You can see your Comparator implementation has become quite simple and you can write them in just one line. Java Program to sort an ArrayList using Comparator ...
Below is the some major important points of abstraction in java. Abstraction helps to reduce the complexity and also improves the maintainability of the system. Abstraction gives more power to the object oriented programming languages when used with the concepts like encapsulation and polymorphism. ...