Advanced Java CompletableFuture Features: Handling Runtime Exceptions (Part 1)

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This video explores the complexities of handling exceptions in asynchronous programs that apply the Java completable futures framework, contrasting it with traditional synchronous exception handling. In synchronous operations, exceptions propagate up the call stack, allowing the same thread to handle them. Conversely, asynchronous operations in Java's completable future framework do not follow this model, as threads may complete their tasks and move on, unaware of exceptions in other operations. I give an overview of key CompletableFuture methods whenComplete(), handle(), and exceptionally()—including their asynchronous variants—to manage exceptions effectively. I emphasize how these exception handling methods support the Reactive programming principle of resilience by gracefully handling errors and preventing system-wide failures.