About IntelliJ IDEA
IntelliJ IDEA is the integrated development environment from JetBrains for Java and Kotlin projects. It pairs deep code analysis with tools for starting and checking AI agents.
What it does
IntelliJ IDEA gives Java and Kotlin developers an editor that understands the whole project. It resolves usages, dependencies and types across the codebase, which helps with navigation, refactoring and safe changes. Recent versions also let you start AI agents from inside the IDE, follow their sessions and review the changes they make before you merge them.
Key features
- Renames that update every reference
- Built-in debugging, testing and profiling
- Database tools in the same window
- Agent sessions with diff review and line comments
- Works with your own API key or an AI subscription
Who it's for
Backend engineers, Android developers and teams that build large Java or Kotlin systems. It suits people who want one IDE for writing, debugging and checking code, with AI help built in.
Pricing and good to know
The download is free and includes 30 days of the Ultimate edition. After that, a paid license is needed for Ultimate features. The IDE runs on Windows, macOS and Linux. Agents can run on your own API key, an existing subscription or JetBrains AI, and you can switch between them during a session.
Highlights
- Find usages, types and dependencies across the whole codebase
- Rename a symbol and update every reference in one step
- Run debugging, testing, profiling and database tools in one place
- Start AI agents in the IDE and review their diffs
- Connect your own API key or an existing AI subscription
