David Geary

David Geary is the president of Clarity Training, Inc. (corewebdevelopment.com), where he teaches developers to implement web applications using JavaServer Faces (JSF) and the Google Web Toolkit (GWT). A prominent author, speaker, and consultant, David holds a unique qualification as a Java expert: He wrote the best-selling books on both Java component frameworks: Swing and JavaServer Faces. David's Graphic Java Swing was the best-selling Swing book, and is one of the best-selling Java books of all-time, and Core JSF, which David wrote with Cay Horstman, is the best-selling book on JavaServer Faces. David was one of a handful of experts on the JSF 1.0 Expert Group (EG) that actively defined the standard Java-based web application framework and on the JSF 2 Expert Group that helped to vastly improve JSF in version 2.

Cay S. Horstmann

Cay S. Horstmann is author of Modern JavaScript for the Impatient (2020), Core Java® SE 9 for the Impatient, Second Edition (2017), Scala for the Impatient, Second Edition (2016), and Java SE 8 for the Really Impatient (2014), all from Addison-Wesley. He has written more than a dozen other books for professional programmers and computer science students. He is an emeritus professor of computer science at San Jose State University and a Java Champion.