That’s all about polymorphism I want to share with you today. Snake, we just pass an object of Snake into the teach() method without any modification. Extensibility: when we want to add a new kind of Animal, e.g.Flexibility: the actual object can be determined at runtime which allows the code run more flexibly.Reusability: the teach() method can be re-used for different kinds of objects as long as they are sub types of the Animal interface. It increases the reusability, flexibility and extensibility of code. Why is Polymorphism?Polymorphism is a robust feature of OOP. Thus we see the outputs: Running… (from the Dog object). And depending on the actual object type, the appropriate overriding method is called. Swimming…Here, as you can see, the teach() method can accept ‘many forms’ of Animal: Dog, Bird, Fish,… as long as they are sub types of the Animalinterface.In the teach() method, the move() method is invoked on the Animal reference. For example: Trainer trainer = new Trainer() Thus we can pass any objects which are sub types of the Animaltype. How is Polymorphism Implemented in Java?In Java, you can implement polymorphism if you have a super class (or a super interface) with two or more sub classes.Let’s understand by looking at some examples.Suppose that we have the following interface and classes: public interface Animal Notice that the teach() method accepts any kind of Animal. You will understand polymorphism quickly. 12 Rules of Overriding in Java You Should Know.A Class is like an object constructor, or a 'blueprint' for. The car has attributes, such as weight and color, and methods, such as drive and brake. For example: in real life, a car is an object. Everything in Java is associated with classes and objects, along with its attributes and methods. This behavior is referred to as virtual method invocation and demonstrates an aspect of the important polymorphism features in the Java language. Java is an object-oriented programming language. It does not call the method that is defined by the variable's type. What is Inheritance in Java - The WHAT, WHY and HOW The Java virtual machine (JVM) calls the appropriate method for the object that is referred to in each variable.So if you absorbed my lessons about inheritance and overriding the following tutorials: In other words, the actual object to which a reference type refers, can be determined at runtime.In Java, polymorphism is based on inheritance and overriding. In OOP, polymorphism means a type can point to different object at different time. What Is Polymorphism?Polymorphism means ‘many forms’.
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