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IntelliJ IDEA comes with one of the most powerful code editors in the industry. It understands the ins and outs of your code thanks to initial indexing, which allows it to detect errors on the fly, suggest code completion options with precise context awareness, perform safe refactoring, and much more.

Functions

Completion of full line code

Powered by an advanced deep learning model, this feature improves coding efficiency by predicting and suggesting entire lines of code based on contextual analysis. It runs exclusively on your local device, ensuring that your data remains secure with no external server communication.

AI Assistant general availability

AI Assistant comes with useful functionality that can simplify your daily tasks. It offers integrated AI chat and can do things like automatically write documentation comments for you, suggest names, generate commit messages, and more.

Language injections

IntelliJ IDEA allows you to work with code elements in other languages ​​embedded in your code. You won’t notice any difference between your experience working with the core Java code and your experience with the code you’ve injected. We provide code highlighting, completion, error detection, and other coding assistance features for embedded code fragments. To add a code snippet in Java, just press Alt+Enter, select Inject Language or Reference, and select the desired language from the list.

Intelligent code completion

IntelliJ IDEA provides context-sensitive code completion, giving you suggestions that are only valid for the current watch position. You don’t need to use any shortcuts or configure additional settings; Code completion starts as soon as you start entering the code in the editor.

IntelliJ IDEA uses machine learning to ensure that the most relevant suggestion is at the top of the list.

The problem tool window

The Issues Tool window displays issues found by IntelliJ IDEA in your project. This includes issues from project-wide analyzes and manual inspections. It also shows the results of checks for risky APIs in imported dependencies. Each issue comes with a report that includes a brief description, a button to fix it, options to suppress inspections, and more.

Inspections and context actions

IntelliJ IDEA is very good at checking the quality and validity of your code with inspections along the way. These inspections help you code faster, adhere to the highest quality standards, and stay safe throughout the development process. We offer a range of standard inspections as well as dozens of frame specific inspections covering a wide range of issues such as Spring bean class autowiring error, etc.

If IntelliJ IDEA finds any problems, it offers to help solve them via context actions, which include hotfixes for highlighted errors and intent actions to change your code if the problems are minor. To start a context action, click the light bulb icon or press Alt+Enter.

Live templates

Live templates are a powerful feature that helps speed up your coding. Simply enter a predefined abbreviation into the template to quickly insert standard code constructs into your work. You can also create your own custom templates, which you can use to insert snippets of code that you use repeatedly.

Project-wide refactoring

IntelliJ IDEA’s automatic refactoring feature allows you to update your code safely and efficiently, both simplifying it and making it more readable and maintainable. The IDE offers a wide variety of refactorings that will help you safely rename code elements, change the signature of a class or method, extract a code fragment into a method, and introduce variables. Watch our video on refactorings essential to everyday coding.

Detection of code duplicates

IntelliJ IDEA can find and replace code repetitions in your project. Specify the search scope and it will search for code similar to the selected method or constant field and replace those repetitions with calls to the original method or constant.

JVM framework

IntelliJ IDEA Ultimate provides first-class support for leading frameworks and technologies aimed at developing modern applications and microservices. Your IDE comes with dedicated assistance for Spring and Spring Boot, Jakarta EE, JPA, Reactor and other frameworks.

What’s new

IntelliJ IDEA 2024.3 introduces a number of powerful new features to elevate your development experience. The IDE now offers a representation of the code’s logical structure, streamlines the debugging experience for Kubernetes applications, provides access to cluster-wide Kubernetes logs, and officially moves K2 mode out of Beta. Explore this page for detailed updates across all areas of the IDE.

Logical Code Structure in the Structure Tool Window Ultimate

The Structure tool window now includes a logical code structure along with the known physical structure. This allows you to see not only classes, methods and fields, but also the links and interactions between components in your project. For example, when you open a controller in a Spring Boot application, you can see the endpoints and the automated application components. This enhanced view helps you understand the project structure and allows you to navigate through the project by following both code usage and meaningful connections.

Improved Kubernetes application debugging experience Ultimate

We’ve made debugging Kubernetes applications even easier. You can enable tunnel debugging by clicking the ellipsis next to the debug button and selecting Add tunnel for remote debugging. This turns your workstation into a virtual part of the Kubernetes cluster, so you can swap in a pod and debug microservices locally with your preferred tools. Other microservices will interact with your workstation as if it were the pod you’re debugging, with full network access to the rest of the cluster.

Kubernetes Cluster Logger Ultimate

IntelliJ IDEA now offers cluster-wide Kubernetes log access with streaming and pattern matching – essential tools for developers as well as DevOps and SRE teams. This feature provides a centralized view of all events across pods, nodes, and services, helping you quickly identify issues without manually checking each log. Real-time streaming enables immediate diagnostics, while pattern matching automates the detection of important events and errors, such as out-of-memory issues or unusual network activity.

Stable K2 mode

In IntelliJ IDEA 2024.3, K2 mode has officially moved out of Beta and is now stable and ready for general use. K2 mode significantly improves code analysis stability, memory consumption efficiency, and the IDE’s overall performance. K2 mode now offers improved feature parity with Java, and support for all Kotlin 2.1 features. To explore the features, go to Settings/Preferences | Language and framework | Kotlin.