Practice Key Concepts Of Oop In Java (4.3) - Introduction to Object-Oriented Programming using Java

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8 questions

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4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
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6 sample questions

Question 1.
What is an object in OOP?
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Remember, it represents a real-world entity.
Question 2.
Define class in OOP.
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Think of it as a template.
3Question 3.
What is the main purpose of OOP?
- To organize code
- To create graphics
- To speed up execution
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Think about the primary philosophy behind OOP.
4Question 4.
True or False: An object can exist without its class.
- True
- False
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Remember the definition of an object.
Question 5.
Design a class structure for a library system that uses all OOP concepts: create classes for Book, Member, and Librarian, implement encapsulation, inheritance, and polymorphism.
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Consider the relationships between the classes and their attributes.
Question 6.
Write a program that demonstrates polymorphism with shapes: create a base class Shape and derived classes Circle and Square, then implement a method to calculate the area.
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Think about the functionality that Circle and Square share.

4 more questions in this section. Enroll free to practise them all.