James Duncan Davidson
James Duncan Davidson is a freelance author, software developer, and consultant focusing on Mac OS X, Java, XML, and Open Source technologies. He created Apache Tomcat and Apache Ant and was instrumental in their donation to the Apache Software Foundation by Sun Microsystems. While at Sun he lead the expert groups for two versions of the Java Servlet API and served as one of the architects of the J2EE platform. He is the author of Learning Cocoa with Objective-C, co-author of Cocoa in a Nutshell, and a contributor to Mac OS X Hacks (all published by O'Reilly and Associates) and publisher of his own website, x180, where he keeps his popular weblog.