Java Reference
In-Depth Information
Display 4.9
Yet Another Date Class
(part 3 of 4)
56
public
void
setDay(
int
day)
57
{
58
if
((day <= 0) || (day > 31))
59
{
60
System.out.println("Fatal Error");
61
System.exit(0);
62
}
63
else
64
this
.day = day;
65
}
66
public
void
setYear(
int
year)
67
{
68
if
( (year < 1000) || (year > 9999) )
69
{
70
System.out.println("Fatal Error");
71
System.exit(0);
72
}
73
else
74
this
.year = year;
75
}
76
public boolean
equals(DateFifthTry otherDate)
77
{
78
return
( (month.equalsIgnoreCase(otherDate.month))
79
&& (day == otherDate.day) && (year == otherDate.year) );
80
}
Within the definition of
DateFifthTry
, you can directly access private instance variables
of any object of type
DateFifthTry
.
81
public boolean
precedes(DateFifthTry otherDate)
82
{
83
return
( (year < otherDate.year) ||
84
(year == otherDate.year && getMonth() < otherDate.getMonth()) ||
85
(year == otherDate.year && month.equals(otherDate.month)
86
&& day < otherDate.day) );
87
}
Within the definition of
DateFifthTry
, you can directly access private instance
variables of any object of type
DateFifthTry
.
<The definitions of the following methods are the same as in Display 4.2 and Display 4.7:
getMonth
,
getDay
,
getYear
, and
toString
.
>
88
private
boolean
dateOK(
int
monthInt,
int
dayInt,
int
yearInt)
89
{
(continued)
