Practice programming project 2:

The following code creates a small phone book. An array is used to store a list of names and another array is used to store the phone numbers that go with each name. For example, Michael Myers phone number is 333-8000 and Ash Williams phone number is 333-2323.

Write the method lookupName so the code properly looks up and returns the phone number for the input target name. lookupName should return a blank string if the name is not in the phone book.

Scanner kbd = new Scanner(System.in); String[] names = {"Michael Myers", "Ash Williams", "Jack Torrance", "Freddy Krueger"}; String[] phoneNumbers = {"333-8000","333-2323", "333-6150","339-7970"}; System.out.println("Enter name to look up."); String targetName = kbd.nextLine(); String targetPhone = lookupName(targetName, names, phoneNumbers); System.out.println("The phone number is " + targetPhone);

Programming Project 13 asks you to rewrite this program using an array of a single object. The object-based approach is more scalable than this approach, which requires a separate array to be managed for every property of the phone contact.

Programming project 3:

Practice Program 2 (above) used two arrays to implement a simple phone book. A more scalable solution is to make an array of an object that stores the name and corresponding phone number. Modify the program to use a single array of an object. The output should remain the same.