Early Access Program Features

IntelliJ IDEA 2016.3 EAP: Polyglot Maven, Grails View, Inspections and More

Say hello to the fresh IntelliJ IDEA 2016.3 EAP build, which brings several new features worth checking out.

Support for Polyglot Maven

First of all, we’ve added the support for Polyglot Maven. In case you don’t know, this is a set of Maven extensions that allows the POM file to be written in Groovy, Scala, Ruby and other languages.

While project import works for any language, coding assistance within POM files is available only for Groovy.

Apart from that you can work with the projects that use Polyglot Maven just as with any other Maven projects.

The Show Effective POM action works as usual and is especially useful if you want to see how Maven interprets the DSL.

Building Groovy resources

Speaking about Groovy, we’ve added actions that build Groovy files located in resource folders. They’re available via the main menu BuildGroovy Resources. Build Resources is incremental while Rebuild Resources builds from the scratch.

Grails view

The Grails developers will be happy to know that the Grails view is back for Grails 3. Now, instead of a tool window, it’s tab inside of the Project tool window:

Artifacts are grouped by their type and reside outside of the sources folder. If you define a class within the src/main/groovy source folder and annotate it with @Artifact(“Controller”), the Grails view will show it under the Controllers node.

All the Project tool window settings are applicable to the Grails view as well, including Flatten Packages.

Items under the Plugins node (always the last in the list) navigate to the corresponding GrailsPlugin class.

Inspection that inlines local variables used only by return statements

IntelliJ IDEA has many inspections aimed at making code shorter and simpler. In this EAP build, we’ve added one more that we hope you’ll find useful.

The new inspection finds local variables used only by return statements, and provides a quick fix that inlines these variables–by replacing their assignments with return statements.

When the returned value can’t be inlined into return statement, the quick fix attempts to move the return statement as close to the computation of the returned value as possible:

Adding runtime assertions for not-null-annotated code

IntelliJ IDEA’s compiler (Settings → Build, Execution, DeploymentCompiler) has an option to generate runtime assertions for the methods and parameters annotated with org.jetbrains.annotations.NotNull.


Starting now it supports non-JetBrains annotations as well–JSR-305 in particular. Click Configure annotations to change the default behaviour:

The blue arrows indicate which annotation is be used by the IDE in inspections. Use the Check button to change them.

Here we’d like to thank Vladimir Dolzhenko who contributed to this improvement.

Resource bundle editor showing unused properties

The Resource Bundle editor now tells which properties are unused in the project:

Spring Initializr

Layout of the Spring Initializr has been reworked to fit more items and provide additional information. As a bonus, it now has the Search field.

Download the EAP build, give it a try and share your feedback with us. If you see something works not as it’s intended, write to our issue tracker.

Develop with Pleasure!

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7 Responses to IntelliJ IDEA 2016.3 EAP: Polyglot Maven, Grails View, Inspections and More

  1. Avatar

    Alan Stange says:

    September 26, 2016

    Importing maven project emits errors with a missing
    org/sonatype/aether/graph/DependencyVisitor class…

    This is on linux…

  2. Avatar

    Eli Israel says:

    November 23, 2016

    Does the Grails view in the project tool window work for earlier grails versions, specifically 2.3.11?

    • Avatar

      Andrey Cheptsov says:

      November 24, 2016

      Yes, not the Grails view is a part of the Project tool window for all supported Grails versions

      • Avatar

        Nathan Dunn says:

        February 1, 2017

        This was true for 2016.2 (am running 2.5.5), but it has disappeared in 2016.3. Even with the newest build.

        • Avatar

          Nathan Dunn says:

          February 2, 2017

          Never mind, it moved out of the “View” menu and into the project menu though I had to remove the old .idea files (not a big deal) and open it again (and do some minor configuration).

  3. Avatar

    Olivier says:

    December 1, 2016


    I always use the Grails view for navigating my project but I every time I restart IntelliJ it defaults back to the project view. This wasn’t an issue before since the Grails view was a separate tool window but now I can’t find a setting to change this default.

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