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

I found the problem, the problem was that the program will terminate before connecting to the Firebase server. What you need to do is to delay the termination of the program, by either calling Thread.sleep(20000);, or like I did it

Scanner scanner = new Scanner(System.in);
while(!scanner.nextLine().equals("Quit")){}
System.exit(0);