I doubt there is much relevance left, especially in light of Java's excellent functional integration into its type system and JVM.

Edit: ``` There's no reason Java couldn't simply add first-class functions and finally enter the grown-up, non-skewed world that allows people to use verbs as part of their thought processes ```

Ironically, this is exactly what happened. With exception that proper technological implementation took many years and might have one of the best implementations for anonymous functions out of any programming language (thank you, dynamic JVM).