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What is Object-Oriented Programming (OOP)?
A methodology or paradigm to design a program using classes and objects.
Which of these is considered the first object-oriented programming language?
What are the key concepts of OOP?
What is an object in OOP?
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What does inheritance provide in programming?
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What is polymorphism?
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What is abstraction in programming?
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Define encapsulation in OOP.
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Who initiated the Java language project?
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Java was originally designed for ______.
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Study Notes
Object Oriented Programming
- Object-oriented programming (OOP) is a paradigm that provides concepts like inheritance, data binding, and polymorphism.
- Simula is considered the first object-oriented programming language.
- Smalltalk is seen as the first truly object-oriented programming language, where everything is represented as an object.
- OOP simplifies software development and maintenance by using classes and objects.
- Key concepts of OOP include:
- Object: A real-world entity with state and behaviour
- Class: A collection of objects.
- Inheritance: An object acquiring properties and behaviours from a parent object, providing code reusability and runtime polymorphism.
- Polymorphism: A single task performed in different ways, achieved through method overloading and method overriding.
- Abstraction: Hiding internal details and showcasing functionality, achieved through abstract classes and interfaces.
- Encapsulation: Binding code and data into a single unit, achieved through Java classes.
Benefits of Inheritance
- Minimizes duplicate code: Common code is shared among subclasses, improving organization and reducing compilation units.
- Flexibility: Related classes can be used interchangeably due to inheritance from a common superclass.
- Reusability: Access public methods of the base class without rewriting.
- Extensibility: Extend the base class logic as per business requirements of the derived class.
- Data hiding: The base class can keep certain data private, preventing alteration by the derived class.
History of Java
- James Gosling, Mike Sheridan, and Patrick Naughton began the Java language project in June 1991.
- The team of Sun engineers was called the Green Team.
- Java was initially designed for small, embedded devices.
- It was later incorporated by Netscape and found to be well-suited for internet programming.
- Java is currently used in internet programming, mobile devices, game development, e-business solutions, etc.
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Description
This quiz covers the fundamental concepts of Object-Oriented Programming (OOP), including classes, objects, inheritance, polymorphism, abstraction, and encapsulation. You will learn about the historical context of OOP languages like Simula and Smalltalk. Test your knowledge of how these concepts simplify software development.
