Explain Polymorphism and inheritance with an example

        In object-oriented programming of Java, the role of both polymorphism and inheritance is crucial in so many ways. They help the programming to be effective so that required coding is done with required parameters. When inheritance is in view, it is important to see that what the most crucial aspect of inheritance is. Reusability is the most crucial aspect associated with inheritance. For example, if there is already a class has been developed by codes, and then inheritance can use that class to create a new class, which is derived by using the properties, hold by the existing class. It means that there would be a base class in inheritance, and then there would be derived classes. On the other hand, the concept of polymorphism asserts to have multiple forms for one function. For example, if there is one object on which function is to be done, then polymorphism has the ability to do different functions on that one object. In polymorphism, there would be a define class or method, and then there would be sub classes for that one class or method.