Explore data-oriented programming (DOP) in Java through this informative conference talk. Learn about the four key principles of DOP: modeling data as data, ensuring data immutability, validating at the boundary, and making illegal states unrepresentable. Discover how to leverage pattern matching as a safe and powerful mechanism for ad-hoc polymorphism on data structures. Gain insights into when to apply DOP techniques and how they compare to object-oriented programming (OOP) approaches. By the end of this 52-minute presentation, acquire a solid understanding of DOP concepts and their practical applications in Java development.