After update to IntelliJ IDEA 2016.3 I get the warning: "project jdk is not defined" in a JavaScript/Node/React project. Have I overseen something? How to solve it? Under "Setup JDK" link I cannot find any notes that fit.

After update to IntelliJ IDEA 2016.3 I get the warning: "project jdk is not defined" in a JavaScript/Node/React project. Have I overseen something? How to solve it? Under "Setup JDK" link I cannot find any notes that fit.

• javascript
• intellij-idea
• configuration

• It seems that projects give this warning if nothing is set for the Project SDK in Project Structure: Project Settings: Project: Project SDK field. JavaScript projects don't need this to be set but you could point it to a Java SDK or Ruby SDK etc to make the warning go away. – Will Humphreys Commented Nov 27, 2016 at 10:44
• @WillHumphreys When I set the SDK through the Project Structure menu, the "project jdk is not defined " the notification didn't go away. I had to click the "Setup SDK" link in the notification itself. – Rag Commented Nov 28, 2016 at 21:00
• 1 @BrianGordon That's interesting. I have just tried adding and removing the a Java project sdk from a project just containing some HTML files and both methods work for me. I can make the notification appear and disappear whether I go through project structure or through the notification. My Intellij version is IntelliJ IDEA 2016.3 Build #IU-163.7743.44. – Will Humphreys Commented Nov 28, 2016 at 21:24
• 1 This has been reported as IDEA-164954. – xehpuk Commented Dec 6, 2016 at 9:32
• Disabling the Scala plugin helps: SCL-11105 – xehpuk Commented Dec 13, 2016 at 17:50

1 Answer 1

This is a known issue with the Scala Plugin for IntelliJ IDEA, see this issue on the JetBrains bug tracker: https://youtrack.jetbrains./issue/SCL-11105

Quoting from the bug report:

After upgrading to 2016.3 Ultimate, the editor windows show a yellow bar at the top that says "Project JDK is not defined" with a link to "Setup JDK" on my non-Java project. I don't want a JDK associated with this project because it's not a Java project. It's a small Docker project with Git version control. Please turn the message off.

User's ments:

It turns out that the issue is related to the Scala plug-in. (...) I can confirm that disabling the Scala plugin made the error vanish.

If you don't want to disable the Scala plugin, as a workaround you can set up the project's SDK (even though it is not a Java project) by going to the project settings menu (File ⃗ Project Structure ⃗ Project) and selecting any SDK in the project SDK dropdown.

The bug ticket has been resolved, so the problem should not exist anymore if you have a recent version of IDEA and the Scala plugin.