This course will explore the techniques of object-oriented programming and design. The emphasis will be upon the development of clean interfaces that permit easy modification and reuse of software components. Other techniques, drawn from outside the object-oriented approach, that significantly contribute to this goal will also be discussed. Students will gain facility in an object-oriented programming language and will learn the constructs that differentiate such languages from others. This course will explore the idioms and styles of object-oriented programming in C++ and Java, with emphasis upon how these contribute to reusable software components. Object-oriented design will also be discussed as an integral part of this process.