intellij

name	intellij
description	IntelliJ IDEA JetBrains IDE with smart completion. Use for JVM development.

IntelliJ IDEA

IntelliJ IDEA is the premier IDE for Java and Kotlin. v2025.1 introduces Java 24 support, K2 Mode (Beta/Stable), and a unified AI Assistant.

When to Use

• Java/Kotlin: Unbeatable refactoring and static analysis.
• Spring Boot: Deep understanding of Spring beans and endpoints.
• Large Monorepos: Indexing is smarter and incremental.

Core Concepts

Indexing

IntelliJ builds a massive index of your code. This enables "Find Usages" to be instant and 100% accurate.

Intentions (Alt+Enter)

The magic key. Fixes warnings, optimizes imports, converts Java to Kotlin.

Run Configurations

Powerful system to launch apps, tests, and docker containers.

Best Practices (2025)

Do:

• Enable K2 Mode: If using Kotlin, the new frontend compiler is much faster.
• Use "Search Everywhere": Double-shift (Shift-Shift) finds files, classes, actions, and settings.
• Share Run Configs: Check .run/ configurations into Git so the team shares launch setups.

Don't:

• Don't disable indexing: Let it finish. The IDE is dumb without it.

References

• IntelliJ IDEA Documentation