The Java language and virtual machine are almost two decades old, and while most developers would recognize the old and new models of Java as being related, there's no question that Java has changed ...

The functional Predicate interface gets used extensively by the Java 8 Streams API. Any developer who wants to master functional programming in Java will need to be comfortable with the Predicate ...

Elliott Rusty Harold is blogging that functional programming in Java is dangerous . He's wrong, and he's way late to the party on this one--it's coming to Java whether he likes it or not.

What is something you wish you knew when you first started functional programming? This question was originally answered on Quora by Tikhon Jelvis.