First what is Die? A class you already implemented? .... And as the instructions say....You need a main method to run your class !! You need to build the PairO fDice class and the BoxCars class that will hold the main method!
public class BoxCars {
public static void main (String [] args) {
//code
//code
//code
.
.
.
.
//code
} //end of BoxCars class Start by trying this.