Ben Evans is an author, speaker, consultant and educator. He is co-founder of jClarity, a startup which delivers performance tools & services to help development & ops teams. He helps to organize the London Java Community and serves on the Java Community Process Executive Committee, helping define standards for the Java ecosystem. He is a Java Champion, JavaOne Rockstar Speaker and a Java Editor at InfoQ. Ben travels frequently and speaks regularly, all over the world. David Flanagan is a computer programmer who spends most of his time writing about JavaScript and Java. His books with O'Reilly include Java in a Nutshell, Java Examples in a Nutshell, Java Foundation Classes in a Nutshell, JavaScript: The Definitive Guide, and JavaScript Pocket Reference. David has a degree in computer science and engineering from the Massachusetts Institute of Technology.