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BlueJ

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193 reviews
  • 1 profiles
  • 1 categories
Average star rating
4.0
Serving customers since
2020
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BlueJ

193 reviews

BlueJ is a free, integrated development environment (IDE) tailored for beginners learning Java programming. Developed by the University of Kent and Deakin University, it emphasizes teaching object-oriented programming principles through a user-friendly interface. BlueJ's design includes a graphical representation of class structures, allowing users to visualize and interact with objects directly, facilitating a deeper understanding of object-oriented concepts. Key Features and Functionality: - Simplified Interface: BlueJ offers a clean and straightforward interface, reducing the complexity often found in professional IDEs, making it accessible for novices. - Interactive Object Creation and Testing: Users can create and test objects interactively, enabling immediate feedback and experimentation without the need for extensive code. - Graphical Class Structure Visualization: The IDE displays class structures in a UML-like diagram, aiding in the comprehension of class relationships and hierarchies. - Cross-Platform Compatibility: BlueJ is compatible with various operating systems, including Windows, macOS, and Linux, ensuring broad accessibility. - Educational Resources: It provides extensive teaching materials, including the textbook "Objects First with Java," co-authored by BlueJ's developers, and the Blueroom website, offering resources and community engagement for educators. Primary Value and Problem Solving: BlueJ addresses the challenges beginners face when learning Java by offering an environment that simplifies the development process and emphasizes object-oriented programming concepts. Its interactive and visual approach helps users grasp complex ideas more intuitively, bridging the gap between theoretical learning and practical application. By focusing on educational needs, BlueJ serves as an effective tool for both self-learners and academic institutions aiming to provide a solid foundation in Java programming.

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88
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7

BlueJ Reviews

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Profile Name
Star Rating
88
73
21
4
7
Ramon M.
RM
Ramon M.
02/04/2026
Validated Reviewer
Verified Current User
Review source: G2 invite
Incentivized Review

BlueJ: Simple Interface That Helps Juniors Build Solid Java Project Structure

Having interacted with different IDEs (both paid and free software), one that offers us considerable benefits when starting a project from scratch is the BlueJ environment, in which the developer(s) are starting with developments in the JAVA language, basically because of the simplicity of the interface and the possibility of orchestrating good practices in terms of how the overall structure of the project to be executed will be shaped.
Sourav C.
SC
Sourav C.
M.Tech in Computer Science (Information Security) @ NIT Jamshedpur'26 | B.Tech in Computer Science And Engineering @ BPPIMT'24 | Cloud and DevOps Enthusiast | Keyboardist
02/02/2026
Validated Reviewer
Verified Current User
Review source: G2 invite
Incentivized Review

Simple, Lightweight UI That Makes OOP Concepts Easy to Visualize

BlueJ has a very simple, easy-to-use UI. It’s one of the simplest Java editors I’ve used and it makes key things easy to see, like OOPS concepts and the arrow relationships between classes. It’s also very lightweight, and it runs well even on very old PCs. We can create objects and call methods without writing a full main which helps a lot. I am using if since school days and still love it.
Edwin V.
EV
Edwin V.
Software Developer and Consultant | React | Ruby on Rails | Java | PHP | Angular | Python | JavaScript | TypeScript | Kotlin
01/27/2026
Validated Reviewer
Verified Current User
Review source: Organic

Great for beginners, but too limited for production.

The simplicity and the 'Object Bench' feature. Removes the clutter of complex IDEs and lets you focus strictly on how objects and classes interact with each other in real-time.

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@bluej

What is BlueJ?

BlueJ is an integrated development environment (IDE) specifically designed for educational purposes, particularly for teaching the Java programming language. It provides a simple and intuitive user interface designed to help beginners learn the basics of object-oriented programming without being overwhelmed by the complexity of larger IDEs. BlueJ offers features like an interactive class structure display, straightforward project management, and integrated editor, code inspection, and visualization tools geared towards helping users understand the fundamentals of Java coding. Additional educational tools include textual and graphical debugging, as well as the ability to interact with Java objects. BlueJ is developed and maintained by a team at King's College London, with its latest version and resources available at https://bluej.org/. This platform is widely used in academic settings around the world and supports various platforms including Windows, macOS, and Linux.

Details

Year Founded
2020
Website
bluej.org