How do I write a JAVA program that solves this?

utilizing java.util.Scanner is okay, but preferred is java.io.*

Thank You!

Your program should compute and print the user's cellphone bill. Charges on the bill should include: A base monthly fee. Overage charges: when the number of free minutes per month is exceeded, the customer is charged at a rate per minute over. Your program should not make any assumptions about rates, fees, etc. - get all information from the user.