I am using the following code to invoke a process
ProcessDefinition processDefinition = ProcessDefinition.parseXmlResource("simple/processdefinition.xml");
// Create an instance of the process definition.
ProcessInstance instance = new ProcessInstance(processDefinition);
System.out.println("Token id="+instance.getRootToken().getId());
it prints token id=0
Please advice
save it first.... tokeid is a generated field