Polymorphism: Means “many forms” and it occurs when we have many classes that are related to each other by inheritance. The most common use of polymorphism in OOP when a parent class reference is used to refer to a child class object.
Ex: WebDriver driver =new chromeDriver();
There are 2 types of Polymorphism:
1. Run time or Overriding
2. Compile time or Over loading
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