Arrays, Loops, and Layout Managers Using External Classes - Java Programming: Comprehensive Concepts and Techniques - page 312

Table 5-3 Components and Variables Used in the Reservations Class (continued)
VARIABLE NAME

DATA TYPE OR COMPONENT PURPOSE

custNameLabel Label Displays a Label prompt for input of customer name

custPhoneLabel Label Displays a Label prompt for input of customer phone number

e ActionEvent References the object that triggers the actionPerformed()

event and windowClosing() event

f Frame Holds the instantiation of the Reservations class

hidden Checkbox Serves as an option button that will not display, used to reset

other option buttons through programming

i int Used to increment a loop

inputPanel Panel Serves as a container to hold and position input components

lightGreen Color Used as a background color for TextArea during certain

conditions (room is considered available)

lightRed Color Used as a background color for TextArea during certain

conditions (room is considered occupied)

nameField TextField Serves as a text box to hold user input for customer name

Nonsmoking Checkbox Serves as an option button for user to select nonsmoking as

smoking preference

numLabel Label Displays a Label prompt for input of the number of guests in

the party

numberOfGuests Choice Adds a drop-down list from 8 to 20 for the number of guests,

for user input

options CheckboxGroup Adds a logical grouping of option buttons: nonsmoking,

smoking, and hidden

phoneField TextField Adds a text box to hold user input for customer phone

number

room Variable of type Used to store data about the array of Rooms

(class) Rooms

roomDisplay Array of type TextArea Used to display data about the array of Rooms

roomPanel Panel Serves as a container to hold and position TextArea

components

Smoking Checkbox Serves as an option button for user to select smoking as

smoking preference

The Reservations class will use four methods to implement the interface.
Table 5-4 displays the methods of the Reservations class and their purposes.