Robert Sebesta is an Associate Professor in the Computer Science Department at the University of Colorado, Colorado Springs. Professor Sebesta received a BS in applied mathematics from the University of Colorado, Boulder, and MS and PhD degrees in computer science from the Pennsylvania State University. His professional interests are the design and evaluation of programming languages, compiler design, and software testing methods and tools. He is the author of Addison-Wesley's Concepts of Programming Languages and Programming the World Wide Web.