A simple java line allows to do that :

[java]
(Class) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0];

JxPath is a very usefull API to manipulate XML. But you can also use it to navigate an modify Java object : JXPathContext for java object

 public class Employee {
    public Address getHomeAddress(){
       ...
    }
 }
 public class Address {
    public String getStreetNumber(){
       ...
    }
 }
 
 Employee emp = new Employee();
 ...
 
 JXPathContext context = JXPathContext.newContext(emp);
 String sNumber = (String)context.getValue("homeAddress/streetNumber");

A very good way to make introspection...

Implementors feature is a very good plugin to jump in Implementation class of an interface pressing Ctrl+Alt+F3. A very good feature to improve our productivity ;)

Thanks Titom for this very good tip!