OnJava8-Examples/generics/SuperTypeWildcards.java
2016-09-23 13:23:35 -06:00

14 lines
413 B
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://OnJava8.com 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
}
}