OnJava8-Examples/generics/CRGWithBasicHolder.java

// generics/CRGWithBasicHolder.java
// (c)2016 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://mindviewinc.com/Books/OnJava/ for more book information.

class Subtype extends BasicHolder<Subtype> {}

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
*/