Using Collections and Strings in a Reusable Class - Java Programming: Comprehensive Concepts and Techniques - page 565

124 public boolean isExpiring ()

125 {

126 boolean expiring = false ;

127
128 if ( autoExpires && remainingUses <= expiresNotifyLimit )

129 expiring = true ;

130
131 return expiring;

132 }

FIGURE 9-25

The following steps enter code for the read-only accessor methods for the
Password class.

To Code Read-Only Accessor Methods

1. Enter lines 114 through 117 as shown in Figure 9-24 on page 563.
TextPad displays the getRemainingUses() accessor method that provides
read-only access to an instance variable, remainingUses (Figure 9-26).
Because remainingUses is a read-only attribute, no corresponding mutator
methods exist.

accessor
method for
read-only
variable,
remainingUses

instance
variable

FIGURE 9-26

2. Enter lines 119 through 122 as shown in Figure 9-24.
TextPad displays the getHistorySize() method, which calls the size() accessor
method of the ArrayList object (Figure 9-27). The size() method functions as
a type of read-only accessor method for ArrayList objects.

accessor
method for
read-only data

call to ArrayList
accessor method, size()

(continued) FIGURE 9-27