Learn how to use Java's synchronized keyword correctly — with real payment and banking examples covering race conditions, synchronized methods, blocks, deadlock-free transfers, double-checked locking, and virtual thread pitfalls. Covers Java 8 through 21
Learn how to use Java's CompletableFuture for async programming — with real payment pipeline examples covering supplyAsync, thenCompose, thenCombine, error handling, and custom thread pools. Covers Java 8, 9, and 21.
Learn how to use Java's ScheduledExecutorService for periodic tasks — with real Kafka and payment pipeline examples covering scheduleAtFixedRate, scheduleWithFixedDelay, exception handling, graceful shutdown, and virtual threads. Covers Java 8 through 21.