The Scalastyle plugin for Eclipse integrates the source code analyzer Scalastyle with Eclipse.
Scalastyle is a development tool written by Matthew Farwell to help you ensure that your Scala code adheres to a set of coding standards. Scalastyle does this by inspecting your Scala source code and pointing out items that deviate from a defined set of coding rules. The full Scalastyle distribution is included with the Scalastyle plugin.
With the Scalastyle Eclipse plug-in your code is constantly inspected for problems. Within the Eclipse workbench you are notified of problems via the Eclipse Problems View and source code annotations just as you would see with compiler errors or warnings.
To get started with using Scalastyle in Eclipse, see Getting Started