// public interface List<E> extends Collection<E> { }
TypeVariable [] tv = List.class.getTypeParameters();
System.out.println( tv[0].getName() ); // E
class StringList extends ArrayList<String> { }
Type type = StringList.class.getGenericSuperclass();
System.out.println( type ); //java.util.ArrayList<java.lang.String>
ParameterizedType pt = (ParameterizedType)type;
System.out.println( pt.getActualTypeArguments()[0] );
//class java.lang.String
