You're on the right track, but you need to add a couple things. First, it would make your life easier to read in user input as a string rather than an integer. So, just use scanner.next() method, which returns a string. At that point, you now have a string representation of the number the user entered. Using a loop, print each character of the string with three spaces concatenated to it.
Code:
System.out.print(character + " ");