For this assignment, you need to fill in the code for the main
method of a class as well as three other static methods. Start by downloading the skeleton file,
consisting of the name of the class and the signatures of the methods. You need to implement the
methods without changing their signatures, because our test programs will call all the methods
declared in the skeleton file, not just the main method. Read the program header for what the
program needs to do and read the method headers for what the methods need to do.