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Programming Concepts
Unit 1
Object-Oriented Programming (OOPs)
Introduction to OOPs
Classes and Objects
Inheritance and Polymorphism
Unit 2
Data Structure and Algorithms
Introduction to Data Structures
Arrays and Linked Lists
Sorting and Searching Algorithms
Unit 3
Operating System
Introduction to Operating System
Process Management in Operating System
Memory Management in Operating System
File Systems in Operating System
Unit 4
Database Management
Introduction to Databases
Database Design and Modeling
Query Optimization and Performance Tuning
Unit 1 • Chapter 3
Inheritance and Polymorphism
Summary
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Concept Check
What is the main difference between inheritance and polymorphism?
Inheritance is when a class inherits properties and behaviors from a parent class.
Inheritance allows a class to have multiple parent classes.
Polymorphism is the process of defining multiple methods in a class.
Polymorphism allows a subclass to override methods from its superclass.
How does inheritance promote code reusability?
Inheritance allows subclasses to reuse methods and fields from their superclasses.
Inheritance promotes code reusability by reducing duplicate code in subclasses.
Inheritance promotes code reusability by allowing classes to have multiple parent classes.
Inheritance allows classes to inherit private methods from superclasses.
What is polymorphism and how is it implemented in Java?
Polymorphism in Java is achieved through method overloading and overriding.
Polymorphism allows an object to change its state at runtime.
Polymorphism is implemented in Java using interfaces and abstract classes.
Polymorphism is the ability of an object to take on many forms in Java.
Explain the concept of method overriding in Java.
Method overriding allows a subclass to provide a specific implementation of a method in its superclass.
Method overriding is when a subclass inherits private methods from its superclass.
Method overriding in Java is the same as method overloading.
Method overriding allows a subclass to provide a more general implementation of a method.
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Classes and Objects