Advanced Java CompletableFuture Features: Introduction Factory Methods

This video provides an in-depth look at advanced features of Java's CompletableFuture API, with a specific focus on its factory methods. These factory methods, called supplyAsync() and runAsync(), serve as entry points for initiating asynchronous computations. While supplyAsync() enables two-way communication by returning a CompletableFuture of a given type, runAsync() is a one-way operation designed for tasks that produce side effects. Both methods offer customization in terms of execution context, defaulting to Java's common Fork-Join pool but allowing for other thread pools via an Executor parameter. I also highlight the ability to pass parameters using "effectively final" variables and distinguish the Java completable futures framework from the Java parallel streams framework by the former's flexibility to select execution contexts.