Package org.jeegen.jee6.util

Class DateTimeUtil

java.lang.Object

org.jeegen.jee6.util.DateTimeUtil

public class DateTimeUtil
extends Object

This class has some methods for finding some special time points.

Field Summary

Fields

Modifier and Type	Field	Description
static long	DAYS_PER_WEEK	This constant defines the days per week.
static long	DAYS_PER_YEAR	This constant defines the days per year.
static long	HOURS_PER_DAY	This constant defines the hours per day.
static long	MILLIES_PER_DAY	This constant defines the milli seconds per day.
static long	MILLIES_PER_HOUR	This constant defines the milli seconds per hour.
static long	MILLIES_PER_MINUTE	This constant defines the milli seconds per minute.
static long	MINUTES_PER_DAY	This constant defines the minutes per day.
static long	MINUTES_PER_HOUR	This constant defines the minutes per hour.
static long	SECONDS_PER_HOUR	This constant defines the seconds per hour.
static long	SECONDS_PER_MINUTE	This constant defines the seconds per minute.

Constructor Summary

Constructors

Constructor	Description
DateTimeUtil()

Method Summary

Modifier and Type	Method	Description
static Calendar	getLastMonth()	This method returns the month before the actual one.
static Calendar	getStartOfDay()	This method returns a Calendar object at the beginning of this day.
static Calendar	getStartOfDay(int day, int month, int year)	This method returns a Calendar object at the beginning of the given day, month and year.
static Calendar	getStartOfDay(Date date)	This method returns a Calendar object at the beginning of the given day.
static Calendar	getStartOfMonth(int month, int year)	This method returns a Calendar object at the beginning of the given month and year.
static Calendar	getStartOfYear(int year)	This method returns a Calendar object at the beginning of the given year.
static void	setTime(Calendar cal, int minute, int hour)	This method sets the time of day.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MILLIES_PER_MINUTE

public static final long MILLIES_PER_MINUTE

This constant defines the milli seconds per minute.

MILLIES_PER_HOUR

public static final long MILLIES_PER_HOUR

This constant defines the milli seconds per hour.

MILLIES_PER_DAY

public static final long MILLIES_PER_DAY

This constant defines the milli seconds per day.

SECONDS_PER_MINUTE

public static final long SECONDS_PER_MINUTE

This constant defines the seconds per minute.

SECONDS_PER_HOUR

public static final long SECONDS_PER_HOUR

This constant defines the seconds per hour.

MINUTES_PER_HOUR

public static final long MINUTES_PER_HOUR

This constant defines the minutes per hour.

MINUTES_PER_DAY

public static final long MINUTES_PER_DAY

This constant defines the minutes per day.

HOURS_PER_DAY

public static final long HOURS_PER_DAY

This constant defines the hours per day.

DAYS_PER_WEEK

public static final long DAYS_PER_WEEK

This constant defines the days per week.

See Also:

Constant Field Values

DAYS_PER_YEAR

public static final long DAYS_PER_YEAR

This constant defines the days per year.

See Also:

Constant Field Values

Constructor Detail

DateTimeUtil

public DateTimeUtil()

Method Detail

getStartOfDay

public static Calendar getStartOfDay()

This method returns a Calendar object at the beginning of this day.

Returns:

The Calendar object at the beginning of this day.

getStartOfDay

public static Calendar getStartOfDay(Date date)

This method returns a Calendar object at the beginning of the given day.

Parameters:

date - The Date for which the start of day should be computed.

Returns:

The Calendar object at the beginning of this day.

getLastMonth

public static Calendar getLastMonth()

This method returns the month before the actual one. The day is the same as the actual one but with the beginning of the day.

Returns:

The time point exactly one month ago ant the beginning of the day.

getStartOfYear

public static Calendar getStartOfYear(int year)

This method returns a Calendar object at the beginning of the given year. The date will be 00:00 01.01.year.

Parameters:

year - The year to compute the beginning from.

Returns:

The beginning of the specified year.

getStartOfMonth

public static Calendar getStartOfMonth(int month,
                                       int year)

This method returns a Calendar object at the beginning of the given month and year. The date will be 00:00 01.month.year. Note: The month is not in Calendar notation. January has the value of 1 and not Calendar.JANUARY!

Parameters:

month - The month to compute the beginning from.

year - The year to compute the beginning from.

Returns:

The beginning of the specified month and year.

getStartOfDay

public static Calendar getStartOfDay(int day,
                                     int month,
                                     int year)

This method returns a Calendar object at the beginning of the given day, month and year. The date will be 00:00 day.month.year. Note: The month is not in Calendar notation. January has the value of 1 and not Calendar.JANUARY!

Parameters:

day - The day to compute the beginning from.

month - The month to compute the beginning from.

year - The year to compute the beginning from.

Returns:

The beginning of the specified month and year.

setTime

public static void setTime(Calendar cal,
                           int minute,
                           int hour)

This method sets the time of day.

Parameters:

cal - The Calendar to set the time.

minute - The minute of the hour.

hour - The hour of the day.