IntelliJ IDEA

About IntelliJ IDEA

IntelliJ IDEA is an integrated development environment for Java and Kotlin development, built by JetBrains. It includes a smart code editor with unlimited code completion and next-edit suggestions, run and debug tools, a profiler, database tools, and support for Spring/Jakarta EE, web development, and cloud and deployment workflows. Debugging features include logpoints, which let developers inspect application state and execution context, including inside compiled third-party libraries, without modifying source code or restarting the application.

The IDE integrates AI capabilities natively, offering access to multiple AI models (including Claude, GPT, Gemini, and Grok or a locally run model) and multi-agent support through tools such as Junie, Claude Agent, Codex, GitHub Copilot, and Cursor. Users can use JetBrains AI credits or bring their own AI subscriptions and API keys. IntelliJ IDEA also supports installing and managing custom agent skills directly within the IDE, with some skills bundled by default.

The product is aimed at professional Java and Kotlin developers and supports the full development lifecycle from design and development through testing and deployment. It provides day-one support for new Java releases, including early access builds for upcoming versions. JetBrains states its tools comply with industry security standards, including SOC 2 certification.

Key features

• Natively integrated AI with multiple models (Claude, GPT, Gemini, Grok, or local models)
• Multi-agent experience supporting Junie, Claude Agent, Codex, GitHub Copilot, and Cursor via ACP
• Next edit suggestions and unlimited code completion powered by IDE intelligence
• Logpoints for debugging without modifying source code or polluting it with print statements
• Spring Security inlays showing endpoint protection rules directly in the editor
• Early support for the latest Java releases, including installable early access builds

Frequently asked questions