help with Java

A company sells 8 GB flash drives for $3.30 each and 16 GB flash drives for $5.20 each. However, large-quantity orders of flash drives of the same type receive discounts. Orders of between 25 and 49 flash drives receive a 10 % discount, orders of between 50 and 99 flash drives receive a 15 % discount, and orders of 100 or more flash drives receive a 20 % discount. Write a program that uses the type and quantity of flash drives ordered, and calculates the cost of the order.

Notes:

• You must use at lease one switch block
• The input values must work for both uppercase and lowercase.
• Assume that the user will always enter valid input