Problem 2: [15 marks] Validate a book number (filename: ValidateBookNumber.java) Write a method that checks whether a given book number is valid. A valid International Standard Book Number can be either in the old 10-digit format or in the new 13-digit format. For example, both 123456789-0 and 123-4-56-789101-0 are valid book numbers. Note that hyphens must be in correct positions as shown in the examples. In the main() method, ask the user to enter a book number in either format, call the method above, and display the result. You must design the algorithms for both the programmer-defined method and the main method