Java program + Create another class named Cash_Register that can be used with the Retail_Item class. The Cash_Register class should be able to internally keep a list of Retail_Item objects. The class should have the following methods:•A method named display_menu that displays the snapshot of data in the store.

•A method named purchase_item that accepts a Retail_Item object as an argument. Each time the purchase_item method is called, the Retail_Item that is

passed as an argument should be added to the list.

• A method named get_total that returns the total price of all the Retail_Items objects stored in the Cash_Register’s internal list.

• A method named show_items that displays data about the Retail_Item objects stored in the Cash_Register object’s intern al list.

• A method named clear that should clear the Cash_Register object’s internal list. Write a TestBonus class that uses