Chaining thenApply method on CompletableFutures

chain_thenApply.java

CompletableFuture<CompletableFuture<CompletableFuture<Map<String, Object>>>> result = myCompletableFutureBigDecimal.thenApply(bigDecimal ->
    myCompletableFutureInt.thenApply( integer ->
        myCompletableFutureLong.thenApply(aLong -> {
          Map<String, Object> objectHashMap = new HashMap<>();
          objectHashMap.put("IntegerValue", integer);
          objectHashMap.put("LongValue", aLong);
          objectHashMap.put("BigDecimalValue", bigDecimal);
          return objectHashMap;
        })));

try {
  Map<String, Object> re = result
      .get(2, TimeUnit.SECONDS)
      .get()
      .get();
  System.out.println(re);
} catch (InterruptedException | ExecutionException | TimeoutException e) {
  e.printStackTrace();
}