Core Java Volume II - Advanced Features 10th Edition About the Author Cay S. Horstmann is author of Core Java for the Impatient (2015), Java SE 8 for the Really Impatient (2014) and Scala for the Impatient (2012), all from Addison-Wesley. He has written more than a dozen other books for professional programmers and computer science students. He is a professor of computer science at San Jose State University and is a Java Champion.