-- Option A: Import your project into Eclipse (recommended) --

Configure Eclipse following the instructions at http://code.google.com/p/google-web-toolkit/wiki/WorkingWithMaven#Using_Maven_with_Google_Plugin_for_Eclipse

In Eclipse, go to the File menu and choose:

File -> Import... -> Existing Maven Projects into Workspace

Select the directory containing this file.

Click Finish.

You can now browse the project in Eclipse.

To launch your web app in GWT development mode

Go to the Run menu item and select Run -> Run as -> Web Application.

If prompted for which directory to run from, simply select the directory that Eclipse defaults to.

You can now use the built-in debugger to debug your web app in development mode.

GWT developers (those who build GWT from source) may add their gwt-user and gwt-dev projects to this project's class path in order to use the built-from-source version of GWT instead of the version specified in the POM.

Select the project in the Project explorer and select File > Properties

Select Java Build Path and click the Projects tab

Click Add..., select gwt-user and gwt-dev, and click OK

Still in the Java Build Path dialog, click the Order and Export tab

Move gwt-dev and gwt-user above Maven Dependencies

GWT developers can also use tools/scripts/maven_script.sh to push their own GWT jars into their local maven repo.

-- Option B: Build from the command line with Maven --

If you prefer to work from the command line, you can use Maven to build your project (http://maven.apache.org/). You will also need Java 1.6 JDK. Maven uses the supplied 'pom.xml' file which describes exactly how to build your project. This file has been tested to work against Maven 2.2.1. The following assumes 'mvn' is on your command line path.

To run development mode use the Maven GWT Plugin.

mvn gwt:run

To compile your project for deployment, just type 'mvn package'.

For a full listing of other goals, visit: http://mojo.codehaus.org/gwt-maven-plugin/plugin-info.html