Write a main program that uses the classes you created in the previous question as per the requirements below: a) Your main program should create two instances (objects), one for each class in the previous question. (5 points) b) Output a String representation of both objects to the console. (5 points) c) Output the name of just one of your object instances to the console. (5 points) Extra Credit Write an accessor method that would go in your first class and can be used to retrieve the name instance variable of the second class. (5 points) Write the Java code for two classes (Customer and Order) as per the requirements below: 1. The Customer class has a name and an order as instance variables. The name is a variable of type String. The order is an object of type Order. 2. The Order class has an orderName and an orderNumber as instance variables. The orderName is a variable of type String and the orderNumber is a variable of type int. a) Implement both classes with the appropriate instance variables (5 points). b) Implement constructors for both classes. The constructors should set all instance variables appropriately (10 points) Hint: Remember that objects store memory addresses and any Customer that has the same Order object will reference the same existing object in memory. Make sure you accommodate for this issue in your constructor c) Implement an accessor method (getter) for the name of the customer in the Customer class (5 points). d) Implement a mutator method (setter) for the order Number in the Order class (5 points) e) Implement a method in the Order class called checkout. This method should output"CLOSED" to the console if the order Number is 9999 otherwise the method should output "OPENED" (5 points) f) Implement a toString method for the Order class that outputs: "The order is named: (name of the order] and the order number is (order number (5 points)