Develop a Java program that implements an interface called IVehicle. This interface will contain two methods: one named Drive of type void and another named Refuel of type bool. The Refuel method will have a parameter of type integer that will represent the amount of gasoline to refuel.
IVehicle
Drive
void
Refuel
bool
Next, create a class Car that implements the IVehicle interface. The constructor of the Car class will take the initial amount of gasoline for the car as a parameter. Implement the Drive and Refuel methods in the Car class.
Car
The Drive method will print on the screen that the car is driving if the amount of gasoline is greater than 0. The Refuel method will increase the car's gasoline and return true.
true
To conduct tests, create an object of type Car with 0 gasoline in the Main method of the program. Prompt the user to enter an amount of gasoline to refuel, and finally, execute the Drive method of the car.
Main
Additional Instructions:
Enter the amount of gasoline to refuel: 15
Refueling successful. Current gasoline level: 15 Attempting to drive the car: The car is driving.
import java.util.Scanner; // Vehicle Interface interface IVehicle { void Drive(); boolean Refuel(int gasolineAmount); } // Car class implementing IVehicle class Car implements IVehicle { private int gasoline; // Constructor to initialize properties public Car(int initialGasoline) { this.gasoline = initialGasoline; } // Implementation of Drive method @Override public void Drive() { if (gasoline > 0) { System.out.println("The car is driving."); } else { System.out.println("The car has no gasoline. Refuel before driving."); } } // Implementation of Refuel method @Override public boolean Refuel(int gasolineAmount) { if (gasolineAmount >= 0) { gasoline += gasolineAmount; System.out.println("Refueling successful. Current gasoline level: " + gasoline); return true; } else { System.out.println("Invalid gasoline amount. Refueling failed."); return false; } } } // Main class public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); // Create a car with 0 gasoline Car car = new Car(0); // Prompt user to enter gasoline for refueling System.out.print("Enter the amount of gasoline to refuel: "); int gasolineToRefuel = scanner.nextInt(); // Refuel the car car.Refuel(gasolineToRefuel); // Drive the car System.out.println("Attempting to drive the car:"); car.Drive(); scanner.close(); } }
Click here to view the exercise solution
Share it on your social media and challenge your friends to solve programming problems. Together, we can learn and grow.
The code has been successfully copied to the clipboard.
Continue improving your Java programming skills with our selection of practical exercises from the lesson. Click on Practice and challenge your knowledge!
Delve into the basics of object-oriented programming in Java. Learn about classes and objects, the essential components that breathe life into modularity and code reusability in this versatile programming language.
Dive into the essence of object-oriented programming in Java by gaining a deep understanding of attributes and methods. Explore how these fundamental elements are crucial for creating classes and objects, providing modularity and efficiency in software development.
Discover the importance of constructors in Java and how they crucially initialize objects. Learn best practices to ensure consistency in instance creation and optimize your code with our detailed examples.
Learn how to create secure interfaces with getters and setters methods in Java. Explore how these methods promote encapsulation and provide precise control over attribute modification.
Create a Java program that requests three names of people from the user and stores them in an array of objects of type Person.
Create a Java program that prompts the user for three names of people and stores them in an array of Person-type objects.
The instanceof operator in Java is used to check if an object is an instance of a specific class, subclass, or implements a specific interface.
Create a new Java project with three classes plus another class to test the logic of the code. The main classes of the program are the following.
Nested and Inner Classes in Java are defined within another class and have access to the members of the containing class, including private members.
Inheritance in Java is one of the fundamental pillars of Object-Oriented Programming (OOP). It provides a mechanism through which a class can inherit properties and behaviors from another class.
Create a Java program to manage a photo book using object-oriented programming.
Create a class called 'Person' with attributes like name, age, and address. Then, create objects of the 'Person' class and initialize their attributes. Implement methods to display and modify these attributes.
An abstract class is a class that cannot be instantiated directly. This means you cannot create objects directly from an abstract class using the new operator.
Create a Java program that represents the following UML class diagram.
Create a Java program that implements an IVehiculo interface with two methods, one for Drive of type void and another for Refuel of type bool that has a parameter of type integer with the amount of gasoline to refuel.
Create a Java program that implements an abstract class Animal that has a Name property of type text and three methods SetName (string name), GetName and Eat.
Practice object-oriented programming exercises in Java. Learn to use constructors, destructors, inheritance, interfaces among others.
Free programming course with practical exercises and solutions in C#. Start learning right now!
Take your Exercises C# lessons everywhere with our Android app. Download it now from Google Play
Own and third party cookies to improve our services. If you go on surfing, we will consider you accepting its use.