When you have downloaded and installed GWT SDK, there are several ways to enable the GWT support, depending on your context:
To have IntelliJ IDEA pick the path to the GWT installation folder every time you enable GWT support for a module, specify this path in the default GWT facet settings.
- Open the Project Structure dialog ( ).
- Go to Facets, and select GWT.
- In the Defaults tab, specify the path to the GWT installation folder. Click OK.