Create common lib methods in jar file

Hi

I am using SoapUI free version. In the free version since it is not possible to create lib functions using Groovy. So i am trying to create jar file How do i set property and getxml response in java

I do not know what to import in the script. I have added soapui-3.6.1.jar to the referenced Libraries (using eclipse)

for example I need an equivalent script in java. How do I initialize testRunner?

def parameters = testRunner.testCase.getTestStepByName('Parameters');
def objectTypeCounter=parameters.getPropertyValue("ObjectTypeCounter");

def responseHolder = new XmlHolder(messageExchange.responseContentAsXml)
responseHolder.namespaces["tal"]="http://www.xyz.com/"
def ErrorCode = responseHolder.getNodeValue("//tal:ErrorCode[1]");
def Statusid = responseHolder.getNodeValue("//tal:StatusId[1]");

I would like to them in a common method so that I can invoke them when ever i require.

thanks