This text is an introduction to software design and construction using the programming language Java. The approach is entirely object-oriented, sometimes called " object first." The emphasis throughout is on problem modeling using fundamental software engineering principles and concepts. • Introduction. • Data Abstraction: Introductory Concepts. • Basic Java Structural Components. • Specification of a Simple Class. • Implementing a Simple Class. • Conditions. • Programming by Contract. • Testing a Class. • Relations. • Putting Together a Complete System. • Software Quality. • Lists and Iteration. • Sorting and Searching. • Abstraction and Inheritance. • Modeling with Abstraction. • Organizing Lists. • Recursion. • Failures and Exceptions. • Building the User Interface. • Designing the GUI Front-End: The Model-View-Controller Pattern. • Computational Complexity. • Implementing Lists: Array Implementations. • Implementing Lists: Linked Implementations. • Organizing List Implementations. • Dispensers and Dictionaries.