CS 1410-20 Homework 12

Due: Wednesday, December 1st, 2010 9:40am

This assignment builds on the information in Lab 10.

Create a phone book application that includes one window for the phone company and one window for a customer who wants to find phone numbers (i.e., starting the program creates two windows):

• The phone-company window should have five elements:

  1. A place to type a name.
  2. A place to type a phone number.
  3. An “Add” button that installs the name and number into a phone book.
  4. A place to type an area code.
  5. An “Add Area Code” button that changes all 7-digit phone numbers in the phone book to be 10-digit numbers using the specific area code.

• The customer window should have three elements:

  1. A place to type a name.
  2. A “Lookup” button.
  3. A place for the phone number (if known) to appear for the given name after the “Lookup” button is pushed.

The phone-company and customer windows are separate views and controls for the same model, where the shared model implements a phone book. That is, if you add a name with the phone-company window and then switch to the customer window, you should be able to lookup the name that was just registered by the phone-company window.

The phone book should start out empty when you start the program.