// generics/CRGWithBasicHolder.java // (c)2017 MindView LLC: see Copyright.txt // We make no guarantees that this code is fit for any purpose. // Visit http://OnJava8.com for more book information. class Subtype extends BasicHolder {} public class CRGWithBasicHolder { public static void main(String[] args) { Subtype st1 = new Subtype(), st2 = new Subtype(); st1.set(st2); Subtype st3 = st1.get(); st1.f(); } } /* Output: Subtype */