Explore the integration of object-oriented and functional programming paradigms in Java 8 through this insightful 56-minute Devoxx conference talk. Delve into the advantages of combining these two programming styles, focusing on how functional idioms can enhance business domain modeling. Learn about passing functions as data, creating thread-safe models with immutable objects, and improving code reusability through side-effect-free programming. Discover practical examples demonstrating function composition, higher-order functions, and the implementation of design patterns like strategy and builder in a functional context. Examine advanced concepts such as currying, error handling with monads, and the Reader monad for decoupling state and behavior. Gain valuable insights on API design, immutability, and the essence of functional programming, concluding with recommendations for further reading to deepen your understanding of these powerful programming techniques.