Java 19

Java 19 (2022):

1. Virtual Threads (preview): Lightweight threads for high-throughput concurrent applications.

try (var executor = Executors.newVirtualThreadPerTaskExecutor()) {
    IntStream.range(0, 10_000).forEach(i -> {
        executor.submit(() -> {
            Thread.sleep(Duration.ofSeconds(1));
            return i;
        });
    });
}

1. Pattern Matching for switch (preview): Continued refinement of the feature introduced in Java 17.

2. Record Patterns (preview): Deconstructing record values in pattern matching.

record Point(int x, int y) {}

static void printSum(Object obj) {
    if (obj instanceof Point(int x, int y)) {
        System.out.println(x + y);
    }
}