4.3 - Key Concepts of OOP in Java
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Practice Questions
Test your understanding with targeted questions
What is an object in OOP?
💡 Hint: Remember, it represents a real-world entity.
Define class in OOP.
💡 Hint: Think of it as a template.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main purpose of OOP?
💡 Hint: Think about the primary philosophy behind OOP.
True or False: An object can exist without its class.
💡 Hint: Remember the definition of an object.
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Challenge Problems
Push your limits with advanced challenges
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.
💡 Hint: Consider the relationships between the classes and their attributes.
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.
💡 Hint: Think about the functionality that Circle and Square share.
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Reference links
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