问题:

Using IntelliJIdea 12, i downloaded the Scala plugin and created a HelloWorld application.

The following import seems odd. Why does IDEA not recognize this to be a Scala Application? Is my setup incomplete?

I checked to see where does my compiler points to and got this. Don't really see a way to navigate IDEA to my scala installation.

Please advise.

回答1:

When creating a new Scala project from the wizard IDEA can download and configure everything for you:

Settings can be changed later in the Scala Facet:

and in Compiler:

Libraries configuration:

Code and imports completion is available from the Scala library:

回答2:

You need to add Scala as a framework for your project.

To do this, right click on the top level directory in your project, choose "Add Framework Support..." and select Scala. Then Scala will be added as a "Facet" of your project.

Here is a good page with more info:

IDEA Scala Project Configuration Explained

回答3:

I got around this by downloading the Scala library from scala-lang.org, unzipping it and then pointing the project to it. It worked fine after that. But of course, I'm an eclipse guy so perhaps someone else might be able to give you a better automated (?) solution. Here's what my project looks like in Module Settings -> Libraries: