3-Abstraction

Why is abstraction used in Java?

• To show all the details of an object to the user
• To hide the unnecessary details from the users
• To increase programming complexity and efforts
• None of the above

What is abstraction?

• Revealing
• Displaying
• Hiding
• Describing

What is abstraction in OOP Java?

• Inheritance
• Polymorphism
• Encapsulation
• Abstraction

What is a good example of abstraction?

• Cooking
• Driving
• Making coffee
• Painting

What is abstraction and interface in Java?

• Methods
• Variables
• Classes
• Inheritance

Question: What is abstraction in programming?

• Hiding complexity
• Increasing efficiency
• Object-oriented programming principle
• All of the above

What is the difference between an interface and an abstract class in programming?

• Implementation, sketch, abstract
• Abstraction, declaration, method
• Abstract, non-abstract, sketch
• Inheritance, complexity, efficiency

What is the purpose of an abstract class?

• To provide a blueprint for derived classes
• To make all methods abstract
• To prevent inheritance
• None

What is abstraction and polymorphism?

• OOP concepts
• Programming languages
• Software development
• None of the above

What is an abstract class in Java?

• Restricted
• Inherited
• Object-oriented
• Abstract method