Consider a class Person that has a string phoneNumber as a private data field. Phone
Chapter 8, Problem 17(choose chapter or problem)
Consider a class Person that has a string phoneNumber as a private data field. Phone numbers have an optional area code, but are written with dashes. For example, two possible phone numbers are 443-555-1232 and 555-0009. Write a method compareTo for Person that enables an array of Person objects to be sorted by phone number.
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer