java only

write clear, should run

6. CashRegister Class Write a cashRegister class that can be used with the RetailItem class that you wrote in Chapter 6's Programming Challenge 4. The cashRegister class should simulate the sale of a retail item. It should have a constructor that accepts a RetailItem object as an argument. The constructor should also accept an integer that represents the quantity of items being purchased. In addition, the class should have the following methods: The getSubtotal method should return the subtotal of the sale, which is the quantity multiplied by the price. This method must get the price from the RetailItem object that was passed as an argument to the constructor. tax rate is 6 percent of a retail sale. sales tax. The getTax method should return the amount of sales tax on the purchase. The sales The getTotal method should return the total of the sale, which is the subtotal plus the chased, and then displays the sale's subtotal, amount of sales tax, and total. 6. CashRegister Class Write a cashRegister class that can be used with the RetailItem class that you wrote in Chapter 6's Programming Challenge 4. The cashRegister class should simulate the sale of a retail item. It should have a constructor that accepts a RetailItem object as an argument. The constructor should also accept an integer that represents the quantity of items being purchased. In addition, the class should have the following methods: The getSubtotal method should return the subtotal of the sale, which is the quantity multiplied by the price. This method must get the price from the RetailItem object that was passed as an argument to the constructor. tax rate is 6 percent of a retail sale. sales tax. The getTax method should return the amount of sales tax on the purchase. The sales The getTotal method should return the total of the sale, which is the subtotal plus the chased, and then displays the sale's subtotal, amount of sales tax, and total