get name of the actual state

[kaissun]

Do you know how we can get the state of our process with the code java by jBPM API ?

if we have :

ProcessInstance instance = executionService.startProcessInstanceByKey("helloworld");

and when i pick : 

System.out.println(instance.getState());

it gives me active-root.

thanks !
NB : the jBPM version is 4.4 !