ChainingCompletableFuture.java

private static void chainingExample(){
        CompletableFuture<String> completableFuture
                = CompletableFuture.supplyAsync(() -> "Hello ")
                .thenCompose(s -> CompletableFuture.supplyAsync(() -> s + "My "))
                .thenCompose(s -> CompletableFuture.supplyAsync(() -> s + "Friend"));
        try {
            System.out.print(completableFuture.get());
        } catch (Exception e) {
            System.out.print("exception occurred");
        }

    }