Java OOPS:What is Dynamic Binding?

Binding refers to the linking of a procedure call to the code to be
executed in response to the call. Dynamic binding (also known as late
binding) means that the code associated with a given procedure call is
not known until the time of the call at run-time. It is associated
with polymorphism and inheritance.

Java OOPS: What is runtime polymorphism or dynamic method dispatch?

In Java, runtime polymorphism or dynamic method dispatch is a process
in which a call to an overridden method is resolved at runtime rather
than at compile-time. In this process, an overridden method is called
through the reference variable of a superclass. The determination of
the method to be called is based on the object being referred to by
the reference variable.

Java OOPS: Explain the different forms of Polymorphism.

There are two types of polymorphism one is Compile time polymorphism and the other is run time polymorphism. Compile time polymorphism is method overloading. Runtime time polymorphism is done using inheritance and interface.

Note: From a practical programming viewpoint, polymorphism manifests itself in three distinct forms in Java:

Method overloading

Method overriding through inheritance

Method overriding through the Java interface

 

Java OOPS: How does Java implement polymorphism?

(Inheritance, Overloading and Overriding are used to achieve
Polymorphism in java).
Polymorphism manifests itself in Java in the form of multiple methods
having the same name.
In some cases, multiple methods have the same name, but different
formal argument lists (overloaded methods).
In other cases, multiple methods have the same name, same return type,
and same formal argument list (overridden methods).

Java OOPS: What is Polymorphism?

Polymorphism is briefly described as "one interface, many
implementations." Polymorphism is a characteristic of being able to
assign a different meaning or usage to something in different contexts
- specifically, to allow an entity such as a variable, a function, or
an object to have more than one form.

Java OOPS : What is Inheritance?

Inheritance is the process by which objects of one class acquire the properties of objects of another class.

• A class that is inherited is called a superclass.
• The class that does the inheriting is called a subclass.
• Inheritance is done by using the keyword extends.
• The two most common reasons to use inheritance are:
• To promote code reuse
• To use polymorphism

 

Java OOPS : What is the difference between abstraction and encapsulation?

Abstraction focuses on the outside view of an object (i.e. the
interface) Encapsulation (information hiding) prevents clients from
seeing it's inside view, where the behavior of the abstraction is
implemented. Abstraction solves the problem in the design side while
Encapsulation is the Implementation.

Java OOPS : What is Encapsulation?

Encapsulation is a technique used for hiding the properties and
behaviors of an object and allowing outside access only as
appropriate. It prevents other objects from directly altering or
accessing the properties or methods of the encapsulated object.

Java OOPS :What is Abstraction?

Abstraction refers to the act of representing essential features
without including the background details or explanations.

Java OOPS : What are the principle concepts of OOPS?

There are four principle concepts upon which object oriented design
and programming rest. They are:

       Abstraction
       Polymorphism
       Inheritance
       Encapsulation. Easily remembered as A-PIE).