A Simple Example to Run Java Program in Maven

http://mojo.codehaus.org/exec-maven-plugin/examples/example-exec-using-plugin-dependencies.html

<executions>
          <execution>
            <goals>
              <goal>java</goal>
            </goals>
          </execution>
        </executions>
        <configuration>
          <mainClass>com.example.Main</mainClass>