Eclipse: What It Is and How to Work with It — A Review of the Development Environment / ITech content

Contents:

• A Brief History of Eclipse: From the Dungeon of IBM to Competing with IntelliJ IDEA
• The Eclipse Philosophy: Everything is a Plugin
• Eclipse-Based Applications
• Eclipse Versions and Builds
• The Main Features of Eclipse: Step-by-Step Code Assembly, Perspectives, and Code Generation
• Themes
• Interesting: How Eclipse Interacts with VS Code
• Disadvantages Wednesday
• What's next

Eclipse is a powerful development environment that supports many programming languages, but it has received the greatest recognition in the Java community. To gain a deeper understanding of this IDE, we reached out to Andrey Kogun, a teacher, team lead, and organizer of the Moscow Java developer community, JUG.MSK. His experience and expertise will help us understand the advantages and capabilities of Eclipse for Java programming and offer recommendations for using this environment effectively. Andrey actively uses Eclipse and is looking forward to sharing his knowledge of this IDE's functionality. We decided to fulfill his request and prepared a detailed overview of Eclipse's capabilities. In this article, you'll find not only the main features but also expert commentary, enhancing your experience with this development environment. Learn how Eclipse can improve your productivity and make programming easier.

• A Brief History of Eclipse
• The Eclipse Philosophy: Everything is a Plugin
• Eclipse-Based Applications
• Versions and Builds
• Eclipse's Key Features
• Integration with Visual Studio Code
• Disadvantages of the Environment
• Conclusion

Organizer of meetings of the Moscow community of Java developers JUG.MSK and team lead of the Java developers group at CROC. He also teaches Java development at Moscow universities, where he shares his knowledge and experience in modern Java technologies.

A Brief History of Eclipse: From IBM's Dungeon to Competing with IntelliJ IDEA

Eclipse, now known as an open-source development environment, has commercial roots. The project was initially developed by IBM as a successor to its VisualAge integrated development environment, for which it allocated approximately $40 million. IBM subsequently handed the project over to the community for two main reasons. First, it allowed for the involvement of a broad developer community, which facilitated the rapid improvement and expansion of the platform's functionality. Secondly, its open source nature provided Eclipse with flexibility and the ability to adapt it to various user needs and requirements, making it one of the most popular development environments in the programming world.

• According to one theory, it was because it focused on Java and wanted as many developers as possible to participate in the ecosystem's development. "Make us free tools and libraries, and we'll stand aside and smoke a cigarette."
• According to another, it was because it decided to gradually exit the home and business PC market, refocusing on consulting. Incidentally, IBM got rid of its ThinkPad laptop line for the same reason, handing it over to Lenovo.

Over time, the non-profit Eclipse Foundation was formed around the project, which became the basis for many projects. Among them are such significant developments as Oracle's Jakarta EE platform and the SWT graphical framework, also created by IBM. The Eclipse Foundation plays a vital role in supporting and advancing these technologies, providing the developer community with opportunities for collaboration and innovation.

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IBM: US National Treasure, Jobs' Opponents, and the Founders of the IT Industry

Founded in the early 20th century, IBM has become a symbol of American innovation and technological progress. Throughout its history, it has made significant contributions to the development of information technology, creating computers, software, and business solutions. IBM not only set standards in computing but also played a key role in shaping the IT market.

The company's history is marked by its rivalry with technology giants such as Apple, founded by Steve Jobs. The competition between IBM and Apple became emblematic in the 1980s, when both companies fought for leadership in the personal computer market. This conflict not only determined the direction of technological development but also changed the concept of what a computer is.

IBM is also known for its innovations, such as creating the world's first commercial computer and developing programming languages ​​that formed the basis of modern technology. Through its achievements, IBM has established itself as a leading player in the IT industry and continues to influence the future of technology.

Today, IBM remains a significant player in the market, focusing on cloud computing, artificial intelligence, and data analytics, allowing it not only to remain relevant but also to shape the future of information technology.

The first version of Eclipse entered the market when the dominant working environment for Java developers was NetBeans, created by Sun Microsystems, the creator of the Java language. However, thanks to IBM's significant investment in marketing, Eclipse soon gained popularity among Java developers. This led to increased usage and competition in the Java development IDE market.

At a certain point, parity was achieved in the IDE market, with each development environment gaining a roughly equal number of users. Eclipse stood out from the competition thanks to the variety of tools that make it suitable as a primary development platform. For example, IBM provides an application server for Java and develops all the necessary tooling for it based on Eclipse. These factors have contributed to Eclipse becoming an indispensable tool in the corporate environment, providing developers with powerful capabilities for creating and managing applications. NetBeans was initially a specialized development environment for Java, making it popular at conferences showcasing the language's capabilities. However, with the rise of IntelliJ IDEA, NetBeans lost ground and became less popular. In recent years, interest in it has significantly declined, and developers are increasingly paying less attention to it. Unlike NetBeans, Eclipse has managed to maintain its competitiveness against IntelliJ. Today, however, IntelliJ seems to have the advantage, being preferred by both experienced developers at industry conferences and beginners. Many beginning programmers choose the free IntelliJ IDEA Community version and then, as they need commercial features, upgrade to the paid version. IntelliJ offers a wide range of tools and integrations, making it an ideal choice for development in a variety of programming languages.

In 2023, 42% of developers prefer using IntelliJ, according to a JRebel survey. VS Code, which supports Java via a Red Hat plugin, is third in popularity. In the next section, we'll look at how exactly this support works.

In 2021, Snyk published its survey results, providing valuable insights into current software security trends. These findings highlight the importance of protecting applications and infrastructure from security threats. The survey identified key challenges facing developers and security teams and emphasized the growing need to implement DevSecOps practices. The results of the study help to understand what measures need to be taken to improve security and minimize risks in the software development process.

Today, Eclipse is closely integrated with the Java ecosystem, and the project's releases are synchronized with language updates. Previously, new versions of Eclipse were published annually, but the developers switched to a rolling release model, which involves regular updates every three months. This allows users to receive relevant improvements and new features faster, keeping pace with the development of Java.

Eclipse is regularly tested with new Java releases, which are released at least twice a year. This allows developers using Eclipse to be among the first to receive updated Java versions. With this support, Eclipse users can effectively take advantage of the latest Java features and improvements, which contributes to more productive software development.

The Eclipse Philosophy: Everything is a Plugin

Eclipse has a unique modular architecture, which makes it distinctive from other systems. It consists primarily of plugins, allowing users to customize and extend the development environment's functionality to suit their needs. This provides high flexibility and the ability to integrate with various tools and technologies.

Plugins in the software perform various functions. Some operate at the core level, providing core program features such as the interface, file system management, and version control. Other plugins integrate into the system through dedicated extension points, allowing developers to add the necessary features to meet their requirements and enhance the application's functionality. Using such plugins contributes to a more flexible and efficient development process.

Eclipse is a powerful software framework that can be customized to suit the specific needs of a developer. For example, the Spring Tool Suite plugin is available for working with the Spring framework, simplifying application development. If you want to create web applications in PHP, you can use the PHP Development Tools plugin, which provides all the necessary tools for working with this language. Thanks to its modular architecture, Eclipse is suitable for various languages ​​and technologies, making it a universal choice for developers.

The Eclipse plugin mechanism is based on the OSGi framework, which provides modular connection of components to the system using data from manifest files. This allows for significant expansion of application functionality while maintaining the integrity of the source code. Using OSGi in Eclipse makes development more flexible and scalable, which attracts many developers to the creation and integration of plugins that improve the user experience and add new features to the development environment.

Most plugins for Eclipse are available for free download, according to the developers. To view a list of extensions and install the necessary add-ons for your build, visit the Eclipse Marketplace. You can also connect to the plugin store directly from the IDE itself, simplifying the search and installation process.

Plugins Eclipse-based applications allow you to quickly create your own integrated development environment (IDE) based on Eclipse. We have often developed such solutions for corporate clients. Unlike Eclipse, creating similar extensions for IntelliJ IDEA is a more complex task. This is due to the fact that the plugin system in IntelliJ IDEA is proprietary, and extensions for it are mainly developed only by JetBrains.

Eclipse-based applications

Eclipse offers a unique opportunity to create not only a personalized version of an integrated development environment (IDE), but also a full-fledged application with a graphical interface in Java. This platform supports plugins from the Eclipse marketplace, which significantly expands the functionality of the developed application. In addition, the created applications can run on various operating systems, which makes Eclipse a universal tool for developers.

Applications developed on the Eclipse platform are known as rich clients. The environment designed for their creation is called the Eclipse Rich Client Platform. This platform is based on three key components that provide functionality and capabilities for developers. These components enable the creation of powerful and interactive applications, making Eclipse the ideal tool for developing rich client solutions.

The SWT framework is designed for rendering graphics and is distinguished by its ability to render using the operating system's capabilities. This allows applications created with SWT to look native on every platform for which an Eclipse build is available. Unlike SWT, IntelliJ IDEA takes a different approach, leveraging the native Java Swing framework. Swing provides a unified interface across platforms, which can impact user experience.

The Eclipse Runtime core is responsible for managing plugins and optimizing their use of system resources. It ensures efficient operation by freezing inactive modules until they are needed by the user. This significantly reduces system resource usage and improves the overall performance of the Eclipse development environment.

The JFace framework is designed for creating user interfaces in Eclipse platform applications. It provides developers with powerful tools and libraries, simplifying the process of developing graphical interfaces. JFace includes components for working with various interface elements, such as tables, trees, and dialog boxes, allowing you to create intuitive and user-friendly applications. Using JFace increases development productivity and improves the user experience thanks to its integration with other Eclipse components.

An example of an application for working with databases and SQL developed on the Eclipse platform is DBeaver. This powerful tool supports multiple databases and provides a convenient interface for running queries, managing schemas, and analyzing data. DBeaver is ideal for both developers and analysts, providing efficient work with SQL and databases.

Eclipse and its derivatives can be run remotely through a browser thanks to RAP, which stands for "remote application platform." This utility provides similar capabilities as RCP, but with a focus on web development. Using RAP allows developers to create interactive web applications, providing access to Eclipse functionality from any location and device with an Internet connection. This significantly simplifies the development and testing process, making it more flexible and convenient.

Eclipse Versions and Builds

Getting started with Eclipse usually involves installing ready-made builds, which already include all the necessary tools for development in various programming languages ​​and platforms. If over time the standard functions become insufficient, you can always use the store of plugins and extensions to add new features and improve your development environment. Eclipse offers a wide range of add-ons, allowing you to customize the IDE to suit your specific needs.

You can select and download the required build in two ways: through a dedicated page with versions or directly from the installer.

Let's look at the most popular versions of Eclipse. Eclipse is a powerful integrated development environment used by programmers around the world. It supports many programming languages ​​and provides a wide range of tools for developing, testing, and debugging applications. Among the most well-known versions of Eclipse are Eclipse IDE for Java Developers, which is optimized for working with Java, and Eclipse CDT, designed for C/C++ development. Also worth mentioning is Eclipse PHP Development Tools, which is an excellent choice for web developers working with PHP. Each of these versions offers unique features and capabilities, making Eclipse a universal tool for developers of various specializations.

Eclipse for Java Developers is the key and primary build, specially created for working with the Java programming language. This version includes all the necessary plugins and features that facilitate the development process. These include tools for compilation, debugging, code completion, and refactoring. Eclipse provides a convenient environment for creating Java applications, making it an indispensable tool for both novice and experienced developers. Enterprise Java development requires a more advanced build, specifically designed for creating enterprise and web applications. This version provides expanded capabilities compared to the basic version, including support for web servers and interfaces. It is ideal for developing scalable and reliable solutions that can efficiently handle large numbers of users and data. Using this build significantly simplifies integration with various systems and services, making it an indispensable tool for modern developers seeking to create high-quality enterprise applications. PHP remains one of the most popular programming languages ​​for web development. This powerful platform supports key technologies necessary for creating modern web applications, including PHP, JavaScript, HTML, and CSS. These languages ​​enable developers to effectively design both front-end and back-end applications, ensuring website interactivity and functionality. In addition to these languages, Microsoft's TypeScript offers enhanced JavaScript capabilities, providing static typing and additional features, making it an excellent choice for developing scalable applications. The combination of these technologies allows you to create high-quality web solutions that meet modern user requirements.

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TypeScript: Features of Operation and Differences from JavaScript

TypeScript is an add-on to JavaScript that adds static typing and Improves the development process. The main difference between TypeScript and JavaScript is that it allows developers to specify data types, which helps detect errors at compile time rather than at runtime. This simplifies debugging and increases the reliability of the code.

Working with TypeScript begins with installing the compiler and setting up a project. The main project files have the .ts extension. After writing the code, TypeScript is compiled to JavaScript, making it compatible with any environment that supports JavaScript.

TypeScript also supports modern JavaScript features and adds its own capabilities, such as interfaces and enumerations. This makes the code more structured and understandable. Using TypeScript is especially useful in large projects where maintaining high code quality and maintainability is important.

In conclusion, TypeScript is a powerful tool for developers, allowing them to create more secure and scalable applications. Understanding its features and applying it in projects significantly improves the quality of the software being developed.

Eclipse for Application Developers offers everything you need to create projects using the RCP and RAP graphical platforms. This tool makes it easy to write code and instantly run it as a server, browser, or desktop application. Eclipse simplifies the development process by integrating various features and tools, making it an ideal choice for programming professionals.

In addition to the assemblies mentioned, there are also packages for C and C++ development, the Internet of Things, scientific computing, and other areas. Previously, there was a build for Android development, but with the platform's transition to Kotlin, Eclipse has been somewhat left behind. Currently, most work is done in IntelliJ IDEA and Android Studio, which makes them more relevant for developers.

Key Features of Eclipse: Step-by-Step Code Build, Perspectives, and Code Generation

Eclipse is often considered a modular platform for application development, but it is also excellent as a full-fledged integrated development environment (IDE). Eclipse implements step-by-step code build functions, which allows developers to closely monitor the compilation process and identify errors at an early stage. Convenient workspaces help organize the project structure, and a variety of themes allows you to customize the interface to suit your personal preferences. Additionally, Eclipse offers a variety of keyboard shortcuts that significantly speed up your workflow. These features make Eclipse not only a powerful tool for creating complex applications but also a convenient solution for everyday development. Let's take a closer look at these features and their benefits. Incremental compilation, which translates from English as "step-by-step," is a process in which the project code is not compiled in its entirety, but only in those sections where the programmer has made changes. This approach allows for quick code checking for errors and its functionality, significantly speeding up the development process. Incremental compilation facilitates more effective debugging and testing, as developers can focus on specific changes without wasting time building the entire project. This method is especially useful in large projects where changes may affect only small sections of code, ensuring faster and more efficient teamwork. The code editor in the screenshot below demonstrates that a bracket is missing. Without the instant compilation feature, we would have discovered this error only after a complete rebuild of the project, which, given a large code base, can take a significant amount of time, sometimes reaching tens of minutes. This highlights the importance of using modern development tools that allow you to quickly identify and fix errors, significantly speeding up the software development process.

In Eclipse It's possible to combine multiple related projects into a single workspace, simplifying their management. Users can configure common settings such as code formatting, Java version, and a customized set of plugins for each specific task. This streamlines the workflow and ensures consistency in development, which is especially useful for teamwork.

Projects in workspaces are often interconnected, as one project may use the resources of another, and another may use the functionality of a third. This creates a complex web of dependencies, where any change in one project can affect the code of others. Thanks to incremental compilation, changes in one component are automatically reflected in related projects, maintaining their synchronicity and integrity. This approach significantly simplifies the development process and optimizes project management, providing flexibility and efficiency when making changes.

Workspaces can Customize them as you wish. The program will save their location and restore them to the specified order the next time you launch the editor. This streamlines your workflow and increases productivity, as you can quickly return to your familiar configuration. Customizing your workspaces to your needs is key to using the editor effectively.

Themes

Eclipse offers a variety of themes, including light, dark, and vibrant color schemes, to suit any user. One interesting option is the Pluto theme, which combines original style with eye comfort. It not only attracts attention but also ensures comfort during extended use. To explore other available themes, visit the Eclipse Marketplace, where you'll find a variety of design options for your workspace.

True programming professionals work in integrated development environments (IDEs) using only keyboard shortcuts, without the mouse. While Eclipse can't compare to Vim in this regard, it provides all the necessary tools for efficient work. For example, the Alt + Shift + R keyboard shortcut allows you to rename multiple variables in your code at once, a process known as refactoring. Using such functions significantly speeds up the development process and improves code readability, which is especially important for teamwork and maintaining a clean project.

There are a huge number of keyboard shortcuts. Almost every key on the keyboard, when combined with Ctrl and Shift, performs a specific function. Over time, hotkeys become familiar, and you begin to solve most problems using combinations, like the many-armed Shiva. Mastering these combinations significantly speeds up your work and increases productivity, allowing you to effectively manage tasks.

A useful cheat sheet for Eclipse hotkeys is available at the following link. It will help you effectively use the functionality of this popular development environment, speeding up your workflow and increasing productivity. Familiarize yourself with the basic keyboard shortcuts to optimize your work in Eclipse.

Eclipse offers different sets of windows and tools, called perspectives, depending on the task you are performing. Some perspectives are used for writing code, others for debugging, and still others for working with databases and interfaces. Choosing the right perspective optimizes your workflow and improves development productivity.

Creating perspectives can be done manually or with plugins that offer the necessary window collections for your task. If you've achieved undesirable results while experimenting, you can always reset the settings and switch to the standard perspective.

Eclipse includes a utility for analyzing Java code for memory leaks, known as MAT (Memory Analyzer Tool). This powerful herramienta allows you to identify unnecessary object references and excessively large collections in applications. MAT not only signals potential problems but also provides recommendations for eliminating them, which helps optimize software operation and improve performance. Using MAT during the development process helps developers maintain high-quality code and prevent potential performance problems in the future.

It should be noted that IntelliJ lacks similar features, which puts JetBrains in an advantageous position.

During software development, there are cases when it is necessary to quickly transform specifications into working code. Often, these specifications are complex, voluminous, and monotonous. To simplify and automate this task, domain-specific languages ​​(DSLs) are used. They generate template code based on text analysis, significantly speeding up the development process and improving the quality of the final product. Using DSLs helps developers focus on the application logic, minimizing routine work and reducing the likelihood of errors.

The Eclipse ecosystem includes a tool for creating programming languages ​​called Xtend. This tool can be installed as a separate plugin or used as a ready-made assembly called Eclipse IDE for Java and DSL Developers. Xtend offers powerful capabilities for developing domain-specific languages ​​(DSLs), providing syntactic sugar and the ability to integrate with Java. Using Xtend simplifies the language creation process and promotes more efficient software development.

At our company, we actively use code generation in Xtend to develop custom solutions. This approach significantly speeds up the development process and improves the quality of the final product. You can read more about our experience using code generation in Xtend in an article published on Habr.

Eclipse isn't deeply integrated into the operating system, making it easy to package it and all installed plugins into an archive and quickly transfer it to another computer. This process is accomplished without the need for additional extensions, thanks to the built-in system tools accessible via the File → Export menu.

A helpful cheat sheet for Eclipse hotkeys can be found on this website. This information will help you speed up your work in the development environment and increase your productivity. Familiarize yourself with the essential keyboard shortcuts to effectively use Eclipse functionality and optimize your workflows.

At our company, we actively use code generation with Xtend to create custom software solutions. I covered this experience in detail in my article on the Habr platform. Code generation allows us to significantly speed up the development process and improve the quality of the generated code, which makes it an essential tool in our work.

Interesting: How Eclipse Interacts with VS Code

If you use Visual Studio Code, you'll be pleased to know that Java support can be configured in just a few clicks using a plugin, such as one from Red Hat. This plugin provides all the necessary tools for working effectively with Java: code completion, syntax highlighting, compilation, and debugging. Thanks to this, you can significantly increase your productivity and simplify the Java development process.

Java support in Visual Studio Code is implemented on the Eclipse platform using the Language Server Protocol (LSP). This means that VS Code itself doesn't have built-in Java support. Instead, a plugin is installed that launches a separate process that functions like "Eclipse without the GUI," providing users with the tools they need to work with the Java language. This approach provides more powerful development capabilities and improves integration with the Java ecosystem.

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Visual Studio Code for WordPress Developers

Visual Studio Code (VS Code) is becoming an increasingly popular tool among WordPress developers due to its flexibility and powerful features. This code editor offers many features that simplify the development process and streamline your workflow.

One of the main advantages of VS Code is its extensibility. Developers can use various plugins, such as PHP Intelephense for code autocompletion and parsing, as well as WordPress Snippet and other tools that significantly speed up coding. Integration with version control systems like Git makes it easy to manage changes and collaborate on projects.

Furthermore, VS Code supports a built-in terminal, making development even more convenient. Developers can execute commands directly from the editor without switching between windows. The ability to customize debugging configurations allows you to find and fix errors faster, which is especially important when developing themes and plugins for WordPress.

VS Code's intuitive interface makes it accessible to both beginners and experienced developers. The editor's cross-platform support allows it to work on various operating systems, which adds convenience to the work process.

Using Visual Studio Code in WordPress project development can significantly increase productivity and efficiency. Choosing this editor can be an important step in optimizing your workflow and improving the quality of the solutions you create.

The irony is that many Java developers who prefer VS Code consider Eclipse to be an outdated and irrelevant tool. However, in practice, Eclipse remains a powerful and efficient IDE capable of meeting modern development requirements. Despite criticism, this "grandfather" It still offers a number of features that can be useful for programmers.

Disadvantages of the Environment

Aesthetics play an important role in choosing development tools, and Eclipse can't compete with IntelliJ in terms of design. Many users find the icons in Eclipse unattractive and unsightly. Developers often value the visual design of their tools, preferring stylish and harmonious interfaces. It's important for them that their work environment is not only functional but also pleasing to the eye. Therefore, for those who appreciate aesthetics, IntelliJ may be a preferable choice.

Performance. Complaints between Eclipse and IntelliJ are mutual. Eclipse demonstrates better results in some tasks, while IntelliJ excels in others. Eclipse users still claim that to work effectively with IntelliJ, it is necessary to be aware of all source files connected to the project. This can lead to a slowdown in the program, which raises additional performance issues.

If Eclipse is experiencing a lack of resources, it may slow down or lock the window, preventing certain actions, similar to the behavior of the Windows operating system. This can make the program difficult to use at certain times. Optimizing settings and increasing allocated resources can significantly improve Eclipse performance and make working with it more comfortable.

The stability of the project remains at risk due to a declining community. A decrease in the number of participants leads to a decrease in activity: fewer people contribute, test features, and identify bugs. However, there are still virtually no serious bugs, indicating that the project is continuing to develop. Maintaining an active community is critical to the sustainability and successful development of the project.

Complexity is one of the main drawbacks of Eclipse, which is why this development environment is not so popular among mainstream IDEs. Eclipse's interface is not intuitive, and users, especially beginners, may need the help of an experienced mentor to master the program's basic functions and capabilities. Without prior training, working with Eclipse can be a challenging task, which reduces its appeal for many developers.

The main difference between Eclipse and IntelliJ is ease of use. IntelliJ offers an intuitive interface, making it easy to learn even for beginners. Meanwhile, Eclipse requires more time to set up due to the presence of additional layers of complexity, such as perspectives and windows. The choice between these two IDEs depends on user preference, but many find IntelliJ more accessible for a quick start.

Eclipse has struggled with slow development for a period. While it has established itself as a reliable integrated development environment (IDE), the community has seen a slow influx of new users. There have been insufficient public demonstrations and events, and regular feature reviews have been lacking. This has impacted Eclipse's appeal to developers, which in turn has affected its competitiveness in the modern IDE market. To attract new contributors and energize the community, it is necessary to increase the number of events and actively share information about the latest updates and platform features.

Eclipse is on the rise again. The project has developed an active community, regular releases ensure stability, and bug fixes are prompt. The number of projects on the platform continues to grow. In addition, the annual EclipseCon conference attracts hundreds of developers, highlighting the interest in the Eclipse ecosystem. Plugin support is top-notch. Whenever problems arose, my team always contacted technical support, and issues were resolved promptly. Furthermore, after JetBrains left Russia, Eclipse has become the primary tool for working with Java in many companies. This makes it a reliable choice for developers looking for a high-quality development environment. Eclipse is one of the most powerful and popular development environments for Java. It offers many features that simplify the work of programmers and make the development process more comfortable. Key features of Eclipse include instant compilation, workspace management, a variety of themes, and convenient keyboard shortcuts. Furthermore, the plugin marketplace allows you to significantly expand the IDE's functionality, tailoring it to the individual needs of developers. Eclipse remains a relevant tool for creating high-quality Java software.

Eclipse is a powerful development environment, but it is not particularly intuitive. Working effectively in it requires time and effort to learn. In the next article, we will offer a brief guide to Eclipse, detailing the installation and configuration process, and showing you how to create your first small project. This will help you quickly master Eclipse and begin developing your development skills.

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