Object-Oriented Programming (OOP)
In this topic, you will learn the fundamentals of Object-Oriented Programming (OOP) in Java. You will discover how to create and manipulate classes and objects, implement inheritance, apply polymorphism, and use encapsulation to develop more organized, reusable, and efficient programs. Through practical exercises, you will strengthen your skills in the OOP paradigm, an essential foundation for software development with Java.
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In this exercise, you will create a Java program that defines a class named Person. This class will have attributes such as name, age, and address, as well as a showInfo() method that prints these attributes. You will then instantiate at least two objects of the Person class and use the method to display information for each one.
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In this exercise, you will create a Java program that defines a class named Car. This class will have attributes such as make, model, and year, and a constructor to initialize these attributes. You will also add a method named showDetails() that prints the values of these attributes to the console. You will then instantiate an object of the Car class and use the constructor to assign values to the attributes and the method to display the car's details.
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In this exercise, you will create a Java program that defines a class named Employee with private attributes such as name, age, and salary. You will use access modifiers to protect these attributes and provide access through public getters and setters methods. The goal is to demonstrate how encapsulation allows you to control access to and modification of a class's data, ensuring the integrity of the object.
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In this exercise, you will create a Java program that defines a base class named Animal with common attributes such as name and age, and methods for accessing these attributes. You will then create a derived class named Dog that inherits from the Animal class and overrides the makeSound() method to provide a dog-specific implementation. The goal is to understand how inheritance allows you to reuse code and extend the functionality of Java classes.
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In this exercise, you will create a Java program that uses **Polymorphism** to handle different types of objects that share common behavior but have specific implementations. First, you will define a base class called Animal with a method called makeSound(). Then, you will create several derived classes such as Dog and Cat, which override this method to provide their own sounds. Finally, you will learn how to use a variable of type Animal to store instances of different derived classes and execute the overridden methods dynamically.
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In this exercise, you will create a Java program that demonstrates the use of **interfaces** and **abstract classes**. First, you will define an **interface** called Vehicle that will have an abstract method called move(). Next, you will create an **abstract class** called Car that will implement some of the behavior for vehicles and will have an abstract method called details(). Finally, you will create a concrete class called Car that will implement both the move() and details() methods, demonstrating how interfaces and abstract classes combine to create a strong, flexible structure for your program.