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javatools.util
Class DateUtil
java.lang.Objectjavatools.util.DateUtil
- public class DateUtil
- extends java.lang.Object
A utility class for use with dates.
- Version:
- 0.7
| Field Summary | |
(package private) static java.sql.Date |
_minusInfinity
A pseudo-date representing -infinity. |
(package private) static java.sql.Date |
_plusInfinity
A pseudo-date representing +infinity. |
(package private) static int |
FEB
Contains 1 (representing February). |
(package private) static int |
LEAP_DAYS_IN_FEB
Contains 29. |
| Constructor Summary | |
DateUtil()
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| Method Summary | |
static int |
daysInMonth(int month,
int year)
Returns the number of days in a month depending on the year. |
(package private) static void |
init()
Initializes... |
static boolean |
leapYear(int year)
Checks if a year is a leap year. |
static int |
maxMonthSize(int month)
Returns the maximum value of days in a month. |
static java.sql.Date |
minusInfinity()
Return a date represting a long time in the past. |
static int |
monthSize(int month)
Returns the month size. |
static java.sql.Date |
plusInfinity()
Return a date representing a long time in the future. |
static java.sql.Timestamp |
timestampNow()
Return a Timestamp object representing the time now. |
static boolean |
validDate(int date,
int month,
int year)
Checks if a date is vald. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
_minusInfinity
static java.sql.Date _minusInfinity
- A pseudo-date representing -infinity.
_plusInfinity
static java.sql.Date _plusInfinity
- A pseudo-date representing +infinity.
LEAP_DAYS_IN_FEB
static final int LEAP_DAYS_IN_FEB
- Contains 29.
- See Also:
- Constant Field Values
FEB
static final int FEB
- Contains 1 (representing February).
- See Also:
- Constant Field Values
| Constructor Detail |
DateUtil
public DateUtil()
| Method Detail |
minusInfinity
public static java.sql.Date minusInfinity()
- Return a date represting a long time in the past.
plusInfinity
public static java.sql.Date plusInfinity()
- Return a date representing a long time in the future. Sometimes people who
don't like to use NULL values in databases use this as a kind of NULL
value. Alternatively it can be sometimes useful in a SELECT to force use of
an index.
timestampNow
public static java.sql.Timestamp timestampNow()
- Return a Timestamp object representing the time now.
leapYear
public static boolean leapYear(int year)
- Checks if a year is a leap year.
monthSize
public static int monthSize(int month)
- Returns the month size.
maxMonthSize
public static int maxMonthSize(int month)
- Returns the maximum value of days in a month.
daysInMonth
public static int daysInMonth(int month,
int year)
- Returns the number of days in a month depending on the year.
Month is zero based.
validDate
public static boolean validDate(int date,
int month,
int year)
- Checks if a date is vald.
month is zero based. date is not.
init
static void init()
- Initializes...
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