2-OOPs concepts in java

What are the OOPs concepts in Java?

• Variables
• Methods
• Classes
• All of the above

What is OOPs concept with an example?

• Object
• Method
• Variable
• Loop

What are the 6 principles of OOP?

• Abstraction, inheritance, polymorphism
• Encapsulation, association, composition
• Aggregation, abstraction, encapsulation
• All of the above

What is abstraction in Java?

• The process of hiding necessary details and exposing the rest
• The process of exposing necessary details and hiding the rest
• The process of reducing an object to its essence
• The process of exposing all characteristics of an object

What is polymorphism in Java?

• The ability to inherit attributes and methods from another class
• The ability to perform different tasks using inherited methods
• The ability to create many classes related by inheritance
• The ability to override methods in a subclass

What is encapsulation in Java?

• The process of storing data members and methods of a class together
• The process of making data members and methods accessible to all classes
• The process of making data members and methods accessible only to the members of the same class
• The process of creating a new instance of a class

What is polymorphism in OOPs?

• The concept of accessing objects of different types through the same interface
• The concept of bundling data members and methods that operate on that data in a single unit
• The concept of exposing necessary details and hiding the rest
• The concept of inheriting attributes and methods from another class

Why Java is called object-oriented?

• Due to the absence of global scope
• Due to its simplicity and ease of extension
• Due to the extensive set of classes and packages it comes with
• Due to the fact that everything in Java is an object and all program codes and data reside within classes and objects

What are the three principles of OOP?

• Algorithms

• Inheritance

• Encapsulation

• all

What are OOPs methods?

• Properties
• Variables
• Functions
• Statements