Problem with extension methods

[Brian Goetz]

Yes, the runtime part is not implemented -- only the compiler part at this time.  

On Aug 21, 2010, at 5:55 PM, Howard Lovatt wrote:

> Hi,
> 
> I am trying out extension methods:
> 
> public interface NewList<T> extends List<T> {
>  extension void sort( final Comparator<? super T> c ) default Collections.sort;
> }
> 
> public class MinimalIntegerList extends AbstractList<Integer>
> implements NewList<Integer> {
>  [snip] // no sort method
> }
> 
> 21:    final MinimalIntegerList il = new MinimalIntegerList();
> 22:    out.println( il );
> 23:    il.sort( #( i1, i2 ) { i1 - i2 } );
> 24:    out.println( il );
> 
> I get:
> 
> [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0]
> Exception in thread "main" java.lang.AbstractMethodError:
> lambdas.MinimalIntegerList.sort(Ljava/util/Comparator;)V
> 	at lambdas.Main.extensionMethods(Main.java:23)
> 	at lambdas.Main.main(Main.java:16)
> 
> Any idea what's wrong?
> 
> -- 
>   -- Howard.
>