New IDE with Java Support: First Look at IntelliJ IDEA 2024.2

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New IDE with Java Support: First Look at IntelliJ IDEA 2024.2

The Java developer community has received a long-awaited update — JetBrains has released a new version of its flagship development environment IntelliJ IDEA 2024.2. This IDE has long been considered the gold standard for Java development, and the new release brings a number of significant improvements that make work even more productive and enjoyable.

In this article, we will look at the key innovations that make IntelliJ IDEA 2024.2 a must-install for every Java developer.

What's New in IntelliJ IDEA 2024.2?

JetBrains developers focused on three main areas: performance, work with modern Java versions, and artificial intelligence integration. Here are the main changes:

Full support for Java 21. The new IDE provides deep code analysis for all the latest language features: pattern matching for switch, Virtual Threads, record patterns, and sealed classes. Autocompletion and type checking work flawlessly.
New generation smart debugger. The debugger can now automatically suggest breakpoints based on recent code changes. A "Data Flow from Here" feature has also appeared — it allows you to instantly trace how data changes from the selected point to the end of the method.
AI assistant Junie. The built-in AI-powered assistant helps write code, refactor it, and generate tests. Junie understands the context of the entire project, not just the open file, making its recommendations as relevant as possible.
Faster startup and indexing. Developers optimized the project loading process. For large projects with thousands of classes, indexing time has been reduced by 20-30% compared to the previous version.
New terminal interface. The built-in terminal received an updated design, tab support, and improved result copying. You can now run multiple sessions simultaneously.

Why is this important for Java developers?

IntelliJ IDEA 2024.2 is not just a cosmetic update. The improvements directly impact development speed and code quality. Virtual Threads, introduced in Java 21, require a new approach to debugging — and the new IDE handles this excellently. The AI assistant helps beginners understand the project faster, and experienced developers get rid of routine tasks like writing boilerplate tests.

Additionally, the updated code analysis engine can now detect more potential errors at the compilation stage. For example, it will warn you if you are using a virtual thread incorrectly or forgot to handle an exception in a new pattern matching.

How to start using it?

You can install the new version in several ways:

Through the built-in updater in the IDE itself (Help → Check for Updates).
Download the installer from the official JetBrains website.
Through the Toolbox App package manager (recommended for developers working with multiple IDEs).

It is important to note: IntelliJ IDEA 2024.2 is available in two editions — the free Community Edition (with limited support for Java EE and enterprise frameworks) and the paid Ultimate Edition, which includes the full set