Choosing an IDE: IntelliJ IDEA, Eclipse, VS Code

1. What is an IDE

IDE (Integrated Development Environment) is not just a buzzword developers like to repeat. It’s a whole toolbox for development: a code editor, a compiler, a debugger, code assistance, project management, and even a built-in coffee machine… okay, not that last one—yet.

Why is an IDE more convenient than a text editor + command line?

When you write code in a plain editor (Notepad or Vim), you have to run compilation manually, look for errors in the console, and sometimes even remember which folder the needed file is in. An IDE does all this for you—and a bit more:

• errors are visible immediately, not only after compilation;
• the IDE suggests methods and variables, and sometimes even seems to read your mind;
• no need to switch between windows;
• you can instantly jump to the needed class or method;
• integration with version control systems (SVN, Git);
• adding libraries is just a couple of clicks.

If writing code in a plain editor is like assembling IKEA furniture blindfolded, then an IDE is like assembling the same furniture with the help of an experienced craftsman and a full set of tools.

2. Overview of popular IDEs for Java

In the Java world there are several major players among IDEs, each with its own features and “character.” Let’s look at the main ones:

IntelliJ IDEA

• Recommended for our course and beginners.
• Has two editions: Community (free) and Ultimate (paid, only needed for professional web, enterprise technologies, etc.).
• Very convenient for newcomers: most settings work out of the box; everything works right away.
• Support for Java 17, 21, 25 (and even fresh preview features).
• Powerful code assistance, auto-completion, and refactoring (automatic code improvement).
• Pleasant interface that doesn’t scare beginners.

Eclipse

• One of the oldest and best-known Java tools.
• Free and open source.
• Highly flexible: you can tailor it with plugins, but out of the box it looks a bit less friendly.
• Sometimes harder to configure for a beginner.
• Supports not only Java but also other languages (C/C++, Python, etc.).
• Often used in large companies where support for specific tools or older Java versions is required.

Visual Studio Code (VS Code)

• It’s more of a “super editor” than a full IDE.
• Requires installing extensions to support Java.
• Lightweight, starts quickly, great for low-spec computers.
• Good for scripts, small projects, and learning/exploring code.
• Not always convenient for serious Java development: not all IDE features are available out of the box.

3. Why we choose IntelliJ IDEA

If you ask any Java developer, “Where should I start?”, 9 times out of 10 they will recommend IntelliJ IDEA. Why?

• Best support for Java 17/21/25: new features appear here among the first.
• Beginner-friendly: you don’t spend hours installing and configuring—everything works right away.
• Integration with Git.
• Powerful code assistance.
• Plugin support.
• Clear, modern interface.
• Free Community edition.

Fun fact

People sometimes say, “IDEA writes code for you.” That’s an exaggeration, of course... but when you first see auto-completion in action, you’ll understand why Java developers’ eyes light up.

Auto-completion example

You just start typing a word, and it immediately offers suggestions to complete it. One of the most frequently used keys in auto-completion is the “Tab” key.

System.out.pr // IDEA will suggest options: println, printf, etc.