Quick Answer: What Is Polymorphism And Encapsulation?

What is polymorphism in OOP?

Polymorphism is one of the core concepts in OOP languages.

It describes the concept that different classes can be used with the same interface.

Each of these classes can provide its own implementation of the interface.

Java supports two kinds of polymorphism.

You can overload a method with different sets of parameters..

What is encapsulation with real time example?

A Real-Time Example of Encapsulation Basically, in this example, we are hiding inner code data i.e. circuits from the external world by the cover. Now in Java, this can be achieved with the help of access modifiers. Access modifiers set the access or level of a class, constructors variables etc.

What is difference between polymorphism and inheritance?

1. Inheritance is one in which a new class is created (derived class) that inherits the features from the already existing class(Base class). Whereas polymorphism is that which can be defined in multiple forms. … Inheritance supports the concept of reusability and reduces code length in object-oriented programming.

Is polymorphism the same as overriding?

Overriding is when you call a method on an object and the method in the subclass with the same signature as the one in the superclass is called. Polymorphism is where you are not sure of the objects type at runtime and the most specific method is called.

Why is polymorphism needed?

The good reason for why Polymorphism is need in java is because the concept is extensively used in implementing inheritance.It plays an important role in allowing objects having different internal structures to share the same external interface. polymorphism as stated clear by itself, a one which mapped for many.

What is the difference between encapsulation and polymorphism?

Polymorphism allows program code to have different meaning or functions while encapsulation is the process of keeping classes private so they cannot be modified by external codes.

What is encapsulation and inheritance?

Inheritance dictates that a child class (subclass) inherits all the attributes and methods from a parent class (superclass). Encapsulation dictates that one class must not have access to the (private) data of another class.

What is encapsulation example?

Encapsulation in Java is a process of wrapping code and data together into a single unit, for example, a capsule which is mixed of several medicines. We can create a fully encapsulated class in Java by making all the data members of the class private. … The Java Bean class is the example of a fully encapsulated class.

What is polymorphism example?

An important example of polymorphism is how a parent class refers to a child class object. In fact, any object that satisfies more than one IS-A relationship is polymorphic in nature. For instance, let’s consider a class Animal and let Cat be a subclass of Animal . So, any cat IS animal.