<build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.3.2</version>
                <configuration>
                    <mainClass>com.mydomain.Main</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>