OnJava8-Examples/generics/SuperTypeWildcards.java

// generics/SuperTypeWildcards.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.
import java.util.*;

public class SuperTypeWildcards {
  static void writeTo(List<? super Apple> apples) {
    apples.add(new Apple());
    apples.add(new Jonathan());
    // apples.add(new Fruit()); // Error
  }
}