Interfaces and Abstract Classes

Topic

Java Exercise

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 implements both the move() and details() methods, demonstrating how interfaces and abstract classes combine to create a strong and flexible structure in your program.

Instructions:

1. Create an interface called Vehicle with the abstract method move().
2. Create an abstract class called Car that implements the Vehicle interface and declares an abstract method details().
3. Create a concrete class called Car that implements the move() and details() methods.
4. In the main method, create an object of type Car and call methods to demonstrate the use of Interfaces and Abstract Classes.

This exercise will help you understand how **interfaces** and **abstract classes** are used to define and organize common behaviors in Java applications, improving their structure and maintainability.

interface Vehicle {
    void move(); // Abstract method to move the vehicle
}

abstract class Car implements Vehicle {
    // Partially implemented method
    public void move() {
        System.out.println("The car is moving.");
    }

    // Abstract method
    public abstract void details();
}

class SportsCar extends Car {
    // Implementing the abstract method details
    @Override
    public void details() {
        System.out.println("This is a sports car.");
    }
}

public class Main {
    public static void main(String[] args) {
        // Create an object of type SportsCar
        SportsCar sportsCar = new SportsCar();
        
        // Call the methods
        sportsCar.move();       // Output: "The car is moving."
        sportsCar.details();    // Output: "This is a sports car."
    }
}

The car is moving.
This is a sports car.