3) (6 Pts) Here is a main program that doesn't work because the class it is using hasn't been written. On the back of this page write a complete definition for the missing class that will allow the program to run correctly. public class Main public static void main(String[] args) [ Echo e-new Echo("foo"); System.out.println(e.multi(2)); // Prints "foofoo" System.out.println(e.multi(3)); // Prints "foofoofoo" System.out.println(e); // Set word to be echoed to "foo" // Prints "word: foo (echoed 5 times)