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JRuby is a Java implementation of Ruby, a programming language used for building web and software applications. It offers developers a vast array of libraries they can use to write code efficiently. Learn JRuby with online courses delivered through edX.

What is JRuby?

JRuby exists on a Java virtual machine (JVM), an interpreter that processes and converts bytecode to run Java applications in any operating environment.1 While it was originally created only for Java, it now supports other programming languages, including Ruby. Ruby is an open-source, object-oriented language that helps streamline web development. It’s known for its simplicity and efficiency.2

JRuby offers developers a high-performance, feature-rich Java implementation of Ruby, allowing them to use Ruby on the JVM platform. With JRuby, they can speed up performance, utilize features from an expansive Java library, and create more complex, large-scale applications.3 Java libraries offer reusable, pre-written code that allow developers to streamline their workflow. However, not everyone may want to work with Java. Some programmers value the benefits of a Java library, but prefer building applications using another coding language.

JRuby offers a workaround to this predicament, enabling developers to code in the Ruby programming language while enjoying key Java features.

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JRuby tutorial course curriculum

Before studying JRuby, learners should familiarize themselves with the Ruby programming language. Ruby is considered to be beginner-friendly, offering learners a straightforward syntax that is relatively easy to understand. Depending on your experience level and professional goals, it may also be helpful to learn Java programming.

Once you’re ready to learn JRuby, you can find coursework that aligns with your personal and professional aspirations. JRuby tutorials may cover a variety of topics, touching on how to:

  • Configure JRuby.

  • Integrate with JVM languages and libraries.

  • Troubleshoot issues while working with JRuby.

  • Report bugs.

  • Use JRuby to develop web applications.

Note that the learning doesn’t stop after course completion. As Java and Ruby continue to evolve and add new features, JRuby will adapt accordingly, requiring its users to stay up to date.

edX offers a variety of educational opportunities for learners of all levels with different commitment requirements. For some, a specialized boot camp can provide the skills needed for a tech career. Others may prefer to earn a bachelor’s degree or pursue a master’s degree, which provide a more in-depth education on a particular topic.

Jobs that use JRuby

Professionals in development positions that use Ruby, Java, or both, can benefit from learning and adding JRuby to their skill set. JRuby can be a powerful tool in instances where they need to build large applications at scale, deploy their work on other JVM-supported platforms, and accelerate their overall development time.4

Roles that may require use of JRuby include:

  • Java application developer: A Java application developer mostly codes applications in Java. However, depending on the need, they may want to leverage Ruby’s simple syntax and undergo a faster development process, which they could achieve by using JRuby.5

  • Ruby developer: A Ruby developer can use Ruby and Ruby on Rails for both front- and back-end development. If they want access to Java libraries, however, they can use JRuby to get the best of both worlds and streamline their work.6

There are several educational avenues you can take to become a developer. Establishing a strong foundation of knowledge is crucial for building, maintaining, and fixing web and software applications. Depending on the position and employer, you may need specific educational requirements and development skills. From shorter coding boot camps to full degree programs that allow you to earn a bachelor’s degree in computer science, edX offers a variety of options for learners looking to build new skills that allow them to advance their tech careers. Get started learning today.

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    Frequently Asked Questions

    1. Java Virtual Machine: The Basics. (2023). HubSpot.Retrieved January 24, 2023.

    2. 2022 Developer Survey. (2022). Stack Overflow. Retrieved March 16, 2023.

    3. JRuby: An Open-Source Implementation of Ruby for the JVM With Several Server Options. (2021). HostingAdvice.Retrieved January 27, 2023.

    4. Java Virtual Machine: The Basics. (2023). HubSpot.Retrieved January 30, 2023.

    5. Java Developer Job Description: Top Duties and Qualifications. (2022). Indeed. Retrieved March 16, 2023.

    6. What Is a Ruby Developer and How to Become One. ZipRecruiter. Retrieved March 16, 2023.