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This article introduces the knowledge of "what open source Java IDE tools are available". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

BlueJ

BlueJ provides an integrated educational Java development environment for Java beginners. It can also develop small software using the Java Development Kit (JDK). Various versions and installation methods of the operating system can be found here.

After installing BlueJ IDE on your laptop, start a new project, click New Project (New Project) on the Project menu, and then start writing Java code by creating a new class (New Class). The generated sample method and skeleton code are as follows:

BlueJ IDE screenshot

BlueJ not only provides an interactive graphical user interface (GUI) for the teaching of Java programming courses in schools, but also allows developers to call functions (i.e. objects, methods, parameters) without compiling the source code.

Eclipse

Eclipse is one of the most famous Java IDE on desktop computers. It supports a variety of programming languages such as Cmax Cure +, JavaScript, and PHP. It also allows developers to add endless extensions from the Eclipse market to get more development convenience. The Eclipse Foundation provides a Web IDE called Eclipse Che for DevOps teams to create an agile software development environment using hosted workspaces on multiple cloud platforms.

You can download it here; then you can create a new project or import an existing project from the local directory. Find more Java development tips in this article.

Eclipse IDE screenshot

IntelliJ IDEA

IntelliJ IDEA CE (Community Edition) is an open source version of IntelliJ IDEA that provides IDE for a variety of programming languages such as Java, Groovy, Kotlin, Rust, Scala, and so on. IntelliJ IDEA CE is also popular with experienced developers and can be used to ReFactor existing source code, review code, build test cases using JUnit or TestNG, and build code using Maven or Ant. You can download it here.

IntelliJ IDEA CE comes with some unique features; I particularly like its API tester. For example, if you implement a REST API,IntelliJ IDEA CE in the Java framework that allows you to test the functionality of API through the Swing GUI designer.

IntelliJ IDEA screenshot

IntelliJ IDEA CE is open source, but the company behind it also provides a commercial ultimate version. You can find more differences between the community version and the ultimate version here.

Netbeans IDE

NetBeans IDE is an integrated development environment for Java that allows developers to build modular applications for stand-alone, mobile, and network architectures using Web technologies supported by HTML5, JavaScript, and CSS. NetBeans IDE allows developers to set up multiple views on how to efficiently manage projects, tools, and data, and helps them collaborate on software development using Git integration when new developers join the project.

The binaries downloaded here support multiple platforms such as Windows, macOS, Linux, and so on. After you have installed the IDE tool in your local environment, the New Project Wizard can help you create a new project. For example, the wizard will generate skeleton code (some parts need to be filled in, such as / / TODO code application logic here), and then you can add your own application code.

VSCodium

VSCodium is a lightweight, free source code editor that allows developers to install on various operating system platforms such as Windows, macOS, Linux, and so on. It is an open source alternative to Visual Studio Code. It is also designed and developed to support a rich ecosystem of programming languages, including Java, C++, C #, PHP, Go, Python, .NET, etc. Visual Studio Code provides debugging, intelligent code completion, syntax highlighting and code refactoring by default to improve the quality of developed code.

There are many downloads in its repository. When you run Visual Studio Code, you can add new features and themes by clicking the "expand" icon in the left activity bar or by pressing the Ctrl+Shift+X key. For example, when you type "quarkus" in the search box, Visual Studio Code's Quarkus tool appears, and this extension allows you to write Java in VS Code using Quarkus:

VSCodium IDE screenshot

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