Explore the principles of fluent API design in this 19-minute conference talk by David Beaumont from Devoxx. Draw from his experience working with the Core Java Libraries team at Google and learn valuable lessons about designing Java APIs. Gain insights into the design of core Java libraries like the Truth testing API and Flogger (Google's Java logging API). Understand why fluent APIs work well for many Java libraries and their general benefits. Discover practical definitions distinguishing fluent APIs from similar design patterns such as chainable APIs and builders. Delve into the pitfalls and subtleties of designing fluent APIs, understanding how they can significantly impact usefulness and intuitiveness for users.