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Computer Programming

1,301 learners

Revisiting OOP Concepts

Essential OOP concepts in Java, including classes, objects, inheritance, polymorphism, and encapsulation, form the cornerstone of object-oriented design and programming. Mastering these concepts is crucial for understanding and effectively utilizing design patterns.

Java

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6 lessons

30 practices

4 hours

Computer Science Fundamentals

Course details

Classes and Objects

Preview

Add Years Active to Musician Class

Fix the Copy Constructor Bug

Complete the Film Class Definition

Enhancing the Album Class with multiple Constructors

Implementing a Person Class

Next Course: Creational Design Patterns

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Francisco Aguilar Meléndez

Data Scientist

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From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11