Introduction to CompletableFuture in Java 8

Learn about what comes next after ExecutorService. How JavaScript promises compare to similar data-structure of CompletableFuture in Java.

CompletableFuture, introduced in Java 8, is a tool for performing possible asynchronous computations and triggering its dependant computations.

This is very similar to JavaScript Promises where series of callbacks are used to perform operations.

For smaller algorithms or flows CompletableFuture is a perfect option. Though, if this becomes complicated, RxJava is an better alternative which provides same benefits as CompletableFuture but is more feature rich and its resultant code is more readable.

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