Groovy script to call multiple java class/code in selenium

Hi,

I'm pretty confused to do the following, as per the link stated above.
-SoapUI is a java project, it must be in some .jars somewhere, hopefully in just one.
-Import that into your Groovy (Java) project.
-Then you should be able to call appropriate functions from your code.

What I should do after converting the java package to jar file and place in it in sopui- eviware/bin/ext folder.

What would be the groovy script to call the main java.class file.

Regards,
Dheepha B