Jakarta commons cookbook - open source solutions to Java development problems. - Timothy M. O'Brien (O'Reilly, 2005)

Maven - a developer's notebook. - Vincent Massol; Timothy M. O'Brien (O'Reilly, 2005)

Harnessing hibernate - a step-by-step guide to Java persistence. - James Elliott; Ryan Fowler; Timothy M. O'Brien (O'Reilly, 2008)