There are plenty of practical uses: http://code.google.com/p/guava-libraries/wiki/FunctionalExplained http://code.google.com/p/guava-libraries/wiki/FunctionalEx

There are plenty of practical uses: http://code.google.com/p/guava-libraries/wiki/FunctionalExplained http://code.google.com/p/guava-libraries/wiki/FunctionalExpl... Note that the Guava lib specifically points out how ugly this is. I prefer Clojure.