To embrace Java 8 even more, we've improved the debugger with first-class lambda support. When adding a breakpoint, now you can choose a lambda expression to stop at.

We've created a unified user interface for testing, added an instant preview pane to Find in Path, improved HiDPI support, and made the IDE friendlier for people with color blindness.

The built-in integrations with version control systems have been updated: we've added Rebase for Git, Shelving changes in Perforce, Managing patches for MQ, Branch operations in Log, and others.

IntelliJ IDEA 15 updates coding assistance across the supported languages and frameworks according to their latest versions: Kotlin, Groovy, Scala, TypeScript, Spring, Grails, React, AngularJS and others.

Kotlin, the JVM language that JetBrains is crafting, goes Beta. IntelliJ IDEA 15 bundles the Kotlin plugin and provides support for Kotlin out of the box.

We've also introduced on-the-fly code duplicates detection; added many new features for working with databases and SQL; merged the recent features from Android Studio; and lots more.

IntelliJ IDEA 15 brings better user interface, more built-in tools and integrations, further improved coding assistance, and out-of-the-box support for Kotlin.

Debugging Lambda Expressions

Debugging lambdas Debugger

If the line you're adding a breakpoint to has a lambda expression, the IDE asks you where exactly you'd like to stop.

When you use Step Into or Run to Cursor, the IDE stops at the corresponding lambda expression.

Force Return Debugger

With the new Debugger action called Force Return, you can force a return from the current method without executing any more instructions from it.

If the method returns a value, you’ll have to specify it (with smart code completion provided).

If the method has try-finally blocks, you’ll be able to choose whether to execute them or not.

Improved UI for testing User Interface

The entire test runner tool window has been created from scratch to provide a unified interface for all languages, complete with inline statistics, vertical layout, test results history, and export/import actions. More details »

Find in Path: Preview Pane

Instant preview for Find in Path User Interface

To make the 'Find in Path' action more responsive, we've added a Preview tab which shows the first 100 results in real time. Now to find what you need, you don't even have to leave the dialog.

Run configurations with a state indicator User Interface

Now every run configuration has a small green indicator that tells you if it's running. If your run configuration is a Single instance only, the IDE will show you the Restart action instead of the Run action on the toolbar. More details »

Adjustments for color deficiency User Interface

When you enable the 'Adjust for color deficiency' option, you can choose the form of color blindness. Currently, we support only the red-green color deficiency. More details »

Running Applications via Gutter Icon

One click to run the application or tests User Interface

The gutter has become more interactive and now allows running applications and tests.

Also, the new icons let you easily differ failed and successful tests.

On-the-fly code duplicates detection Editor

IntelliJ IDEA 15 allows you to spot code duplicates on the fly. Now, if you stumble upon an existing duplicate, or somehow create one either by writing or pasting code, you will know it instantly. This feature is currently available only for Java. More details »

Expression type Editor

The Expression Type action, previously available only in Scala, now works for Java, Groovy and Kotlin expressions as well.

Available via Ctrl + Shift + P (Cmd + Shift + P for OS X) this is the easiest way to know the inferred type of any expression without touching the mouse.

Encoding special HTML characters

Encoding special HTML characters

Use the Encode XML/HTML Special Characters action to encode special characters in your HTML code, replacing them with HTML entities that start with &. Quick and easy!

Kotlin Languages

Kotlin, the JVM language that JetBrains is crafting, goes Beta. IntelliJ IDEA 15 bundles the Kotlin plugin and provides support for Kotlin out of the box.

To get started with Kotlin, use this handy tutorial.

Groovy Languages

We added support for the @Builder annotation, introduced in Groovy 2.3. The support includes code completion and quick navigation for all four strategies.

Scala Languages

We added many new features and enhancements in Scala:

  • Macro Expansion Extractor
  • Debugging: stopping at Lambda Expressions
  • Postfix completion
  • Inline Refactoring for Type Aliases
And more…

Spring Frameworks

Enjoy better coding assistance for the new features added to Spring 4.2 and Spring Boot. More details »

The Spring Initializr in the Project Wizard has been improved and now provides quick search, automatic Maven/Gradle import, and creating Spring Boot run configurations.

Grails Frameworks

The update comes with the initial support for Grails 3.x, the latest version of the popular Groovy-based web application framework. More details »

Arquillian Frameworks

IntelliJ IDEA 15 introduces initial support for the Arquillian testing platform.

Now you can configure containers for your project, and then easily run any test against a chosen container. The IDE will take care of all dependencies for you.

Android Frameworks

The new features of Android Studio 1.3 are available in IntelliJ IDEA 15:

  • Android Memory (HPROF) Viewer
  • Allocation Tracker

Gradle / SBT build tools

Now when importing a Gradle/SBT project, you can select specific modules instead of importing the whole project. More details »


New support of TypeScipt 1.6 features includes:

  • Intersection types
  • Type guard functions
  • Local types
  • Exclude property in tsconfig.json

Integration with TSLint, a linter for TypeScript, is also available


The coding assistance for React, a popular front-end JavaScript framework, has been greatly improved:

  • Code completion and navigation for CSS class names
  • Warning for unclosed HTML tags
  • Surround with action in the JSX files
  • Better navigation
  • Coding assistance for React-specific attributes
More details »


IntelliJ IDEA 15 comes with basic support for AngularJS 2: the IDE provides code completion and navigation for directives and bindings and understands new event attributes.

Git Rebase Version control

The Rebase action is now available in the Branches menu on equal terms with Merge, supporting multiple roots, automatic stash/unstash and conflict resolve.

Editing Code in Diff Viewer

Editing code in the Commit dialog Version control

Editing capabilities are now also available in the Commit Dialog. If you want to make a quick edit, there's no need to switch back to the editor anymore. Editing works in both the Two-sided and One-sided Diff Viewers.

Branch operations Version control

Now you have access to branching operations right from the context menu in the VCS Log Viewer.

Shelve in Perforce Version control

Now you can shelve your changes not only locally but also in Perforce, which may be more convenient and safe in some cases. There is a new action in the Local Changes tab in the Version Control tool window. More details »

Accessing TFS work items Version control

IntelliJ IDEA 15 brings several improvements of the TFS integration as well. Now, when committing your changes, you can access your saved queries, and browse work item trees.

Managing patches for MQ Version control

If you use Mercurial Queues, you'll be glad to know that the IDE now provides dedicated tools for managing patches. It lets you create patches, import local commit as patches, rename, apply, unapply and remove them.

Database tools

The built-in set of tools for SQL developers features many improvements:

  • Fast and accurate schema introspection
  • Modify table action
  • Generating CREATE TABLE and INSERT statements via Alt + Ins (Cmd + N for OS X)
  • Execution plan
  • And lots more…

And Even More

  • True HiDPI display support for Windows and Linux. More details »
  • Support for Freemarker 2.3.23
  • Undo action in the Merge dialog
  • SVN 1.9 compatibility
  • Easier configuration for Docker containers along with the Docker Toolbox support
  • Syntax highlighting for async/await keywords in JavaScript
  • New inspections for checking dependencies Node.js
  • Debugging Webpack projects
  • Enhanced Dart support

Support and Learning

IntelliJ IDEA 15 Preview

What's new in IntelliJ IDEA 15

IntelliJ IDEA Playlist