OnJava8-Examples/generics/SuperTypeWildcards.java
2016-12-30 17:23:13 -08:00

14 lines
413 B
Java

// generics/SuperTypeWildcards.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.
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
}
}