Create a program that provides a listing of all the files in a directory. the program should be a java application that accepts a single argument into the args array of the main() method. this argument identifies the name of a directory. the application should make sure that this filename really does identify a directory and then list all of the files in the directory. for each file, list whether the file is a file or a directory and list the size for each file. the program should print its output to system. out.