Java Online Courses & Certifications

Java is a widely used, high-level, object-oriented programming language developed by Sun Microsystems (acquired by Oracle Corporation) in the mid-1990s. It is known for its portability, security features, and the “write once, run anywhere” (WORA) capability, which allows Java programs to be executed on any platform that has a Java Virtual Machine (JVM).

Java is used in various domains, including web development (Java Servlets, JavaServer Pages, Spring framework), mobile app development (Android apps), enterprise applications (Java EE), scientific computing, big data processing (Hadoop), and more. It has remained popular due to its versatility, robustness, and cross-platform capabilities.

To develop Java applications, you typically use an Integrated Development Environment (IDE) like Eclipse, IntelliJ IDEA, or NetBeans, which offer tools for code editing, debugging, and project management. The JDK (Java Development Kit) is required to compile and run Java programs, while the JRE (Java Runtime Environment) is needed to execute Java applications on end-user machines.

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Codecademy Learn Java: Inheritance and Polymorphism Certificate included
For beginners
No limits
On demand
Recorded videos

In this course, we’ll look into how all Objects are related to each other through the concept of inheritance. We’ll also look at how an object can act like two different objects using polymorphism.

Codecademy Pass the Technical Interview with Java Certificate included
For experienced
No limits
On demand
Recorded videos

Once you have a strong foundation in Java, the next step is going pro. In this skill path, we’ll teach you the advanced coding skills you need to land a job — along with tips and tricks that will help you nail the technical interview. Learn about data structures and algorithms and dive into more advanced topics like algorithmic complexity and dynamic programming.

Codecademy Learn Intermediate Java Certificate included
For experienced
No limits
On demand
Recorded videos

Intermediate Java is a stepping stone to taking your skills to the next level. This course will provide you with the knowledge to make your Java code cleaner, more efficient, and more manageable. We’ll also dive under the hood of fundamental concepts that will deepen your understanding of the Java language.

Codecademy Technical Interview Practice with Java Certificate included
For experienced
No limits
On demand
Recorded videos

You’ll need to pass a technical interview if you want to be hired for a technical role. Don’t worry — these interviews are pretty predictable, and the same kinds of problems appear again and again. Even if you don’t have a technical interview scheduled just yet, practicing these common problems will help you grow as a programmer and problem solver, and will help you write cleaner and better code.

 

Codecademy Learn Java: Object-Oriented Programming Certificate included
For beginners
No limits
On demand
Recorded videos

In this course, you’ll learn the foundations of object-oriented programming, write your own classes, create your own objects, and finally dive into some of the most common built-in Java classes.

Codecademy Learn Java Certificate included
For beginners
No limits
On demand
Recorded videos

Popular for its versatility and ability to create a wide variety of applications, learning Java opens up your possibilities when coding. With it, you’ll be able to develop large systems, software, and mobile applications — and even create mobile apps for Android. Learn important Java coding fundamentals and practice your new skills with real-world projects.

Codecademy Learn Java: Introduction Certificate included
For beginners
No limits
On demand
Recorded videos

Ready to start your journey into the Java programming language? This course will walk you through understanding the program structure of a Java program, running your very first Java-based code, and storing data inside of a variable.

Codecademy Java for Programmers Certificate included
For experienced
No limits
On demand
Recorded videos

This course is dedicated to programmers who are already familiar with the world of programming and are looking to get acquainted with the Java programming language. It’s designed to be a series of short, interactive articles that you can skim, dive into, or even skip. We did this so that you can use this course to both learn Java concepts and check as a reference guide.

Codecademy Learn Java: Conditionals and Operators Certificate included
For beginners
No limits
On demand
Recorded videos

Learn how to control the flow of execution using conditional statements.

Codecademy Learn Advanced Java Certificate included
For pros
No limits
On demand
Recorded videos

Learn advanced topics in Java and improve your developer skills!