If I have a Class parameter, I can get the type of the parameter and
use it.

 void method(Class<T> clazz)
 {
   Map<String, T> t = new HashMap<String, T>();

 }

Is there any way to do the reverse, i.e. with a type variable, is there
a way
to get the Class ?

void <T> method(T t) {
   Class<T> clazz = T.class;        // does not work

   Class<T> clazz = t.getClass();  // works, but only if t is not null
}

Thx