After doing these courses, I feel confident creating professional visualizations and dashboards
Shoebur RahmanProcurement Specialist, Giz Bangladesh
Course Description
Object-oriented programming (OOP) is a powerful approach to writing organized and scalable software. Java, one of the world’s most popular programming languages, brings OOP to life with clear syntax and strong community support. In this course, you’ll learn how to use Java to model real-world systems using classes, objects, inheritance, encapsulation, and more.
Build Real-World Java Classes and Objects
Begin by learning to define classes as blueprints and use them to create object instances. You’ll apply core Java syntax to build reusable components that mirror real-world entities, like cars, passports, and formulas.
Add Behavior with Constructors and Methods
Master the use of constructors to initialize object state and explore methods to add behavior. You’ll write both void and return-type methods, helping you create dynamic and interactive programs.
Secure and Reuse Code with Encapsulation and Inheritance
Explore how access modifiers control what’s visible to users of your code. Learn how to use inheritance and abstract classes to eliminate duplication and create structured hierarchies.
Apply Interfaces and Polymorphism
Use interfaces to add flexibility and implement shared behavior across classes. Finally, unlock the power of polymorphism by overriding and overloading methods for more adaptable software designs.
By the end, you’ll be able to design modular Java applications with clean, object-oriented architecture.
Prerequisites
Curriculum
Course outline
1
Object-Oriented Programming (OOP) in Java
Explore the fundamentals of object-oriented programming (OOP) in Java, focusing on the distinctions between primitive data types and objects. Learn to define and create classes and objects and understand the critical components of classes, such as fields, constructors, and methods.
- Welcome50 XP
- Defining a car class100 XP
- Creating car class object instance100 XP
- Adding properties50 XP
- Add properties to car class100 XP
- Creating a constructor for car class100 XP
- Adding parameters to car class constructor100 XP
- Class methods50 XP
- Working with void methods100 XP
- Adding class methods with return types100 XP
2
Encapsulation & Inheritance
Deep dive into object-oriented programming by exploring key concepts such as encapsulation, inheritance, and abstraction. Learn how to control access to class members, extend class functionality, and define abstract concepts and contracts that ensure consistency across implementations.
3
Interfaces and Polymorphism
Strengthen your object-oriented programming skills by exploring how Java interfaces and polymorphism work. Learn how to define interfaces and implement them in classes to support flexible behavior. Practice method overriding to customize behavior in subclasses and use method overloading to define multiple forms of a method within the same class. You’ll also explore constructor overloading to enable versatile object creation. These hands-on exercises will help you write more adaptable and reusable Java code.
J
Introduction to Object-Oriented Programming in Java
Course
Complete
