Java Reference
In-Depth Information
Display 4.11
Overloading Method Names
(part 2 of 2)
39
private
boolean
dateOK(
int
monthInt,
int
dayInt,
int
yearInt)
40
{
41
return
( (monthInt >= 1) && (monthInt <= 12) &&
Two different
methods named
dateOK.
42
(dayInt >= 1) && (dayInt <= 31) &&
43
(yearInt >= 1000) && (yearInt <= 9999) );
44
}
45
private
boolean
dateOK(String monthString,
int
dayInt,
int
yearInt)
46
{
47
return
( monthOK(monthString) &&
48
(dayInt >= 1) && (dayInt <= 31) &&
49
(yearInt >= 1000) && (yearInt <= 9999) );
50
}
51
private
boolean
monthOK(
String
month)
52
{
53
return
(month.equals("January") || month.equals("February") ||
54
month.equals("March") || month.equals("April") ||
55
month.equals("May") || month.equals("June") ||
56
month.equals("July") || month.equals("August") ||
57
month.equals("September") || month.equals("October") ||
58
month.equals("November") || month.equals("December") );
59
}
60
public
void
readInput()
61 {
62
boolean
tryAgain =
true
;
63 Scanner keyboard =
new
Scanner(System.in);
64
while
(tryAgain)
65 {
66 System.out.println("Enter month, day, and year.");
67 System.out.println("Do not use a comma.");
68 String monthInput = keyboard.next();
69
int
dayInput = keyboard.nextInt();
70
int
yearInput = keyboard.nextInt();
71
if
(dateOK(monthInput, dayInput, yearInput) )
72 {
73 setDate(monthInput, dayInput, yearInput);
74 tryAgain =
false
;
75 }
76
else
77 System.out.println("Illegal date. Reenter input.");
78 }
79 }
<The rest of the methods are the same as in Display 4.9, except that
the parameter to
equals
and
precedes
is, of course, of type
DateSixthTry
.>
80
}
