We will discuss some code examples of Run time polymorphism here. One cannot override the private methods of a parent class.IS-A relationship is mandatory (inheritance).Methods of child and parent class must have the same parameter.Methods of child and parent class must have the same name.Rules and Limitations in Runtim e Polymorphismīelow are some of the rules and limitations of runtime polymorphism: Rules of Runtime Polymorphism It is also called “Late binding” because binding of method and object, which means the functionality of which object’s method will be displayed, is decided late, i.e. Reason being named so, due to the fact that the functionality of the method is dynamically decided in run time as per the object by JVM It is also referred to as “Dynamic method dispatch”. Hence it is called as Run time polymorphism. Making of this decision happens during runtime by JVM after the compilation of code. When we call an overridden method of child class through its parent type reference (this phenomenon in java is referred to as “Upcasting”), then the type of the object indicates which method or functionality will be invoked. If a child class has that type of method in it, we call it an overridden method. Method overriding happens when objects have the same method name and arguments and type as of their parent class but with different functionality. Runtime polymorphism works in Java by method overriding. How does Runtime Polymorphism work in Java? annotation may be used here to point out which method we want to override specifically. Here we will see how Java archives polymorphism in run time, which means, after compilation but before running of the code.įor runtime polymorphism in Java, you should follow the basic syntax of java with annotations. So the term polymorphism indicates the same thing of different types.
“Poly” means “many”, and “morph” means “type”.
In this article, we are going to learn about Runtime Polymorphism in Java. Introduction to Runtime Polymorphism in Java
0 kommentar(er)
