Title: Basics of Object-Oriented Programming (OOP) in Dart

Slide 1: Introduction - Welcome to the Basics of Object-Oriented Programming (OOP) in Dart presentation - Object-Oriented Programming is a programming paradigm that focuses on objects and their interactions - Dart is a modern, object-oriented programming language developed by Google

Slide 2: OOP Concepts - OOP is based on four main concepts: Encapsulation, Inheritance, Polymorphism, and Abstraction - Encapsulation: Combining data and methods into a single unit called an object - Inheritance: Creating new classes from existing classes to inherit their properties and behaviors - Polymorphism: The ability of objects to take on many forms and behave differently based on their types - Abstraction: Simplifying complex systems by breaking them down into smaller, more manageable parts

Slide 3: Classes and Objects - In Dart, classes are used to define objects - A class is a blueprint for creating objects with similar properties and behaviors - Objects are instances of a class, representing real-world entities - Example: class Person { String name; int age; void sayHello() { print(“Hello!”); } }

Slide 4: Constructors - Constructors are special methods used to initialize objects - Dart provides two types of constructors: Default and Parameterized - Default Constructor: Automatically created if no constructor is defined - Parameterized Constructor: Allows you to pass values during object creation - Example: class Person { String name; int age; Person(this.name, this.age); }

Slide 5: Inheritance - Inheritance allows classes to inherit properties and behaviors from other classes - Dart supports single inheritance, meaning a class can only inherit from one superclass - The “extends” keyword is used to establish an inheritance relationship - Example: class Student extends Person { String school; }

Slide 6: Polymorphism - Polymorphism allows objects to be treated as instances of their superclass or their own class - Dart supports polymorphism through method overriding and method overloading - Method Overriding: Redefining a method in a subclass to provide a different implementation - Method Overloading: Defining multiple methods with the same name but different parameters - Example: class Animal { void makeSound() { print(“Animal makes sound”); } } class Dog extends Animal { void makeSound() { print(“Dog barks”); } }

Slide 7: Abstraction - Abstraction allows you to hide unnecessary details and only expose essential features - Dart provides abstract classes and interfaces for abstraction - Abstract Class: A class that cannot be instantiated and can contain abstract methods - Interface: A contract that defines a set of methods that a class must implement - Example: abstract class Shape { void draw(); } class Circle implements Shape { void draw() { print(“Drawing a circle”); } }

Slide 8: Conclusion - Object-Oriented Programming is a powerful paradigm for building complex software systems - Dart provides robust support for OOP concepts such as encapsulation, inheritance, polymorphism, and abstraction - Understanding these concepts will help you write clean, modular, and maintainable code in Dart

Slide 9: References - List any references or resources used in creating the presentation

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