Firebase Java Admin SDK don't work

Question

I am following the documentation on Firebase website on setting up an Java Admin SDK. So I add the dependency to the build.gradle, and added the following code:

Answer 1

Add this code:

ApiFuture api=/*your reference to database*/usersRef.setValueAsync(users/*the data*/);

Object o = api.get(/*time out*/8,TimeUnit.SECONDS/*unite for time out her is seconds*/);

And at last you can check with

api.isDone();