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
In this guide, you will learn theOOPs Concepts in Java. Object-oriented programming System(OOPs) is a programming concept that is based on “objects”. The primary purpose of object-oriented programming is to increase the readability, flexibility and maintainability of programs. Object oriented prog...
When an object ‘has a’ another object, then, you have got an aggregation in between them. This is also called a ‘has a’ relationship. For an OOPs example; an employee can be only in one department. Even if the department is deleted, the employee exists. This is called ‘has a’...
Here SubClassB inherited the methodfoo()fromSuperClassA. Polymorphism:Polymorphism means taking many forms, where ‘poly’ means many and 'morph' means forms. Polymorphism allows you define one interface or method and have multiple implementations. In Java, there are two types of polymorphism: comp...
Example of encapsulation: A class in java is a simplest example of encapsulation. It keeps the data(variables) and behavior(methods) of an entity together. A class also restricts access to these data and behavior through the use of access specifiers. The concept of keeping instance variables ...
Aggregation Example in Java For example consider two classesStudentclass andAddressclass. Every student has an address so the relationship between student and address is a Has-A relationship. But if you consider its vice versa then it would not make any sense as anAddressdoesn’t need to have...
How does Association Work in OOPs along with Examples Let us see how the Association works in Java code which follows the OOPs concept along with the examples: Example #1: Aggregation Program Code: import java.util.*; // Employee class having the Employee information ...
Q41) Give some examples of programming languages that support object-oriented characteristics? Ans:Some of the programming languages which support object-oriented characteristics are ABAP, C++, Perl, LISP, Java, C#, Tcl, VB.Net, Ruby, Python, PHP, etc. The popularity of these languages has incr...
In our previous post I discussed about the classes and the objects and have also shown some examples of how to use a class and what is the purpose Read More Java Objects and Classes in Java Hitesh Garg|August 17, 2014 In this I am gonna discuss how objects and classes are related, how...
OOPs programming approach which follows concept of object oriented programming like class, object, data abstraction & encapsulation, inheritance, polymorphism etc, is known as Object oriented programming. In short, we call it OOP’s (object oriented programming)....