4) (5 Pts) Write a static method max that takes as a parameter a Scanner already connected to a file and ready for reading, and return the largest value of the integer tokens in it. If no token can be read as an integer throw an IllegalargamentException. Note: there may be tokens other than integers and there may be no tokens at a 5) (6 Pts) On the back of this page write a complete Java program (including imports, class name, etc) that prompts the user for a file name and prints "exists" if the file exists and is readable and "not exists" otherwise. Do this using a try-catch structure. If you can set up a Scanner to the file then it exists and is readable, and if that fails it is not