Polymorphism is the ability of an object to take on many forms. The most common use of it in OOP occurs when a parent class reference is used to refer to a child class object.<\/p>\n
It is one of the OOPs features that allow us to perform a single action in different ways.<\/p>\n
Example 1.<\/strong> Example 2.<\/strong><\/p>\n public class Horse extends Animal{ public class Cat extends Animal{ Types of Polymorphism are:<\/p>\n 1) Static Polymorphism is known at compile-time. Compile type Runtime Polymorphism<\/strong><\/p>\n It is also known as Dynamic Method Dispatch. Dynamic is a process in which a call to an overridden method is resolved at runtime, that’s why it is called runtime polymorphism.<\/p>\n Abstraction<\/strong><\/p>\n Abstraction\u00a0is a process of hiding the implementation details and showing only functionality to the user. Abstraction Properties<\/strong><\/p>\n Example:-<\/strong><\/p>\n abstract\u00a0class\u00a0Bike{ class\u00a0Honda4\u00a0extends\u00a0Bike{ You may also like inheritance<\/a><\/p>\n
\npublic class Animal{
\n…
\npublic void sound()
\n{
\nSystem.out.println(“Animal is making a sound”);
\n}
\n}<\/p>\n
\n…
\n@Override public void sound(){
\nSystem.out.println(“Neigh”);
\n}
\n}
\nAnd<\/p>\n
\n…
\n@Override public void sound(){
\nSystem.out.println(“Meow”);
\n}
\n}<\/p>\n\n
\n2) Dynamic Polymorphism also is known at runtime.<\/p>\n
\nA polymorphism that is resolved during compile time is known as static polymorphism. Method overloading is an example of compile-time polymorphism.
\nMethod Overloading<\/strong>: This allows us to have more than one method having the same name if the parameters of methods are different in number, sequence and data types of parameters.<\/p>\n
\nAnother way, it shows only important things to the user and hides the internal details, for example, sending SMS, you just type the text and send the message. You don’t know the internal processing about the message delivery.
\nAbstraction lets you focus on what the object does instead of how it does it.
\nA class that is declared as abstract is known as\u00a0abstract class. It needs to be extended and its method implemented. It cannot be instantiated.<\/p>\n\n
\nabstract\u00a0void\u00a0run();
\n}<\/p>\n
\nvoid\u00a0run(){System.out.println(“running\u00a0safely..”);}
\npublic\u00a0static\u00a0void\u00a0main(String\u00a0args[]){
\nBike\u00a0obj\u00a0=\u00a0new\u00a0Honda4();
\nobj.run();
\n}
\n}<\/p>\n