Get a deep dive into using method references in your Java programs, including stream operations, event listeners, and constructors and factories.

Learn how to use synchronous and asynchronous callbacks in Java—including callbacks with lambda expressions, CompletableFuture, and more.

The problem with RESTful web services that use JSON or XML as a data exchange is bloat and verbosity. Compare REST vs GraphQL performance if you want to simplify your web API development.