net.fortuna.ical4j.util
Class TimeZones

java.lang.Object
  net.fortuna.ical4j.util.TimeZones

public final class TimeZones
extends java.lang.Object

$Id: TimeZones.java,v 1.12 2011/02/20 03:14:09 fortuna Exp $ [5/07/2004] Utility methods relevant to Java timezones.

Author:

Ben Fortuna

Field Summary

static java.lang.String	GMT_ID The timezone identifier for GMT time.
static java.lang.String	IBM_UTC_ID The timezone identifier for UTC time in the IBM JVM.
static java.lang.String	UTC_ID The timezone identifier for UTC time.

Method Summary

static java.util.TimeZone	getDateTimeZone() Although timezones are not really applicable to DATE instances in iCalendar, the implementation in iCal4j requires the use of a timezone.
static java.util.TimeZone	getUtcTimeZone() Get the UTC Timezone.
static boolean	isUtc(java.util.TimeZone timezone) Indicates whether the specified timezone is equivalent to UTC time.

Methods inherited from class java.lang.Object

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

Field Detail

UTC_ID

public static final java.lang.String UTC_ID

The timezone identifier for UTC time.

See Also:

Constant Field Values

IBM_UTC_ID

public static final java.lang.String IBM_UTC_ID

The timezone identifier for UTC time in the IBM JVM.

See Also:

Constant Field Values

GMT_ID

public static final java.lang.String GMT_ID

The timezone identifier for GMT time.

See Also:

Constant Field Values

Method Detail

isUtc

public static boolean isUtc(java.util.TimeZone timezone)

Indicates whether the specified timezone is equivalent to UTC time.

Parameters:

timezone - a timezone instance

Returns:

true if the timezone is UTC time, otherwise false

getDateTimeZone

public static java.util.TimeZone getDateTimeZone()

Although timezones are not really applicable to DATE instances in iCalendar, the implementation in iCal4j requires the use of a timezone. Dates in iCal4j may be either "floating", in that they use the default Java timezone, or alternatively will use UTC (this is the default). The use of floating dates may be configured by specifying the following as a system property or in a file called "ical4j.properties" in the classpath:

net.fortuna.ical4j.timezone.date.floating=true

Returns:

the timezone used for date instances

getUtcTimeZone

public static java.util.TimeZone getUtcTimeZone()

Get the UTC Timezone.