Features

IntelliJ IDEA features, grouped the way you work

This page covers Spring, Java 27, Kotlin 2.4, inspections, agent skills, and built-in HTTP and database tools from the current 2026.2 line. Free versus Ultimate is a license switch inside one installer, not two products.

New Project wizard set to Spring Boot with Java, Kotlin, and Gradle

01 / Spring

Spring that follows the running app

IntelliJ IDEA still treats Spring as a first-class stack. 2026.2 tightened database migration workflows and Spring Security insights. Free tier keeps syntax highlighting, the Spring Boot wizard, and basic bean awareness. Ultimate keeps the deeper wiring, diagrams, and runtime inspections.

SpringDebugRuntime inspections

If a project will not import, use the first-run JDK steps.

Project tree beside NotificationDispatcher.java in a Spring service

02 / Language rail

Java 27 and Kotlin 2.4 in the same window

2026.2 opened with day-one language support so new syntax lands in the editor, not a later plugin. Front-end files in a JVM repo stay beside the backend on Ultimate.

Code intelligenceCtrl+Space
Inspections
RefactoringShift+F6
NavigationCtrl+B
Debugging

Java 27Kotlin 2.4TypeScript 7.0Terraform testing

PostMapping gutter offering Generate request in HTTP Client

03 / Agents

Work with AI without leaving the IDE.

Skills bundle project knowledge with IDE actions. The official 2026.2 notes list debugging, profiling, database exploration, search, and coverage as tools an agent can call. Native GitHub Copilot integration and third-party completion providers shipped in the same train.

Assign a task to an agent
Call the debugger and profiler
Keep GitHub Copilot in-process

Agent skill list with ij-debugger selected

Debugger paused on NotificationDispatcher with Frames and Variables

04 / Debugger

Stop on the line that actually failed

Frames, variables, and logpoints stay attached to the running JVM. 2026.2.3 restored debug stop on WSL2 mirrored networking. HTTP Client and OpenAPI drafts sit on the same desk so a breakpoint and a request share one window.

this.service
  notifyHub
frames[0]
  NotificationDispatcher
locals
  request = POST
  status = 500

FramesVariablesLogpoints

See the IntelliJ IDEA install guide if a first index stalls before you can debug.

Capability matrix

Free core compared with Ultimate

Source: JetBrains unified-product FAQ after 2025.3. After the 30-day trial the IDE keeps running; advanced plugins simply turn off.

Capability	Included	Workflow	Related guide
Java	Free core	Editor, Maven, Gradle	First run and JDK
Kotlin	Free core	Same window as Java 27	First run and JDK
Spring	Highlighting + wizard; deeper on Ultimate	Beans, Security, migrations	First-run JDK steps
Database	SQL language + viewer; full tools on Ultimate	Schema and connections	Download IntelliJ IDEA 2026.2.3
Web	Ultimate after trial	TypeScript 7.0, endpoints	New UI checklist
AI	Trial only, then Ultimate	Agents, Copilot, skills	IntelliJ IDEA FAQ
Debugger	Free core	Logpoints, WSL2 stop	Indexing freezes
Version control	Free core	Git in the header widget	New UI and Compact mode
HTTP client	Trial only, then Ultimate	Generate request, OpenAPI	Install on Windows
Build tools	Free core	Maven window, Gradle 10 preview	Repair caches

Download

Download IntelliJ IDEA 2026.2.3

Download 2026.2.3