threads

SimpleCompletableFuture.java

        Runnable task = () -> {
            System.out.println("Async task thread : " + Thread.currentThread().getName());
            System.out.println("EXECUTED!");
        };
        final CompletableFuture<Void> future = CompletableFuture.runAsync(task);

        System.out.println("Main thread : " + Thread.currentThread().getName());
        future.join();