The second edition, in Java, of the classic Walls and Mirrors approach to programming designs solutions to problems using both data abstraction (the walls) and recursion (the Mirrors). Data Abstraction and Problem Solving with Java: Walls and Mirrors, 2e provides a focus on the important concepts of data abstraction and data structures in a way that beginning students find accessible. The book has a student-friendly pedagogical approach, that carefully accounts for the strengths and weaknesses of the Java language. This second edition includes more material on the Java language and increased focus on object-oriented programming ideas.