Big Java Late Objects
Big Java Late Objects
2nd Edition
ISBN: 9781119330455
Author: Horstmann
Publisher: WILEY
Question
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Chapter 14, Problem 8PE
Program Plan Intro

Telephone lookup problem

Program plan:

Main.java

  • Create a class named “Main”. Inside the class,
    • Define the “main ()” method.
      • Prompt the user to enter the phonebook file name.
      • Create object for lookup table.
      • Create a file reader object
      • Read the contents of the table.
      • Prompt user to enter the choice.
      • Based on the choice the values are searched and displayed.
      • Prompt the required details and display the required.

Item.java

  • Create a class named “Item”. Inside the class,
    • Declare the required variables
    • Declare the array.
    • Declare the constructor and initialize the required variables.
    • Define the method “getKey”
      • Return the key value.
    • Define the method “getValue”
      • Return the value.
    • Define the method “compareTo()”
      • Perform the comparison
      • Return the key and value pairs.

LookupTable.java

  • Create a class named “LookupTable”. Inside the class,
    • Declare the required array variables
    • Declare the constructor and initialize the required variables.
    • Define the method “read()”
      • Get the key and value.
      • Add the key and value
    • Sort the values based on the key and values.
    • Define the method “lookup()”
      • Perform the search operation
      • Condition to validate the value and return the required value.
    • Define the method “reverseLookup()”
      • Perform the search based on the key and value pair.
      • Return the values based on the key and value pair.

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Big Java Late Objects

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