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Java in a Nutshell

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30.24 java.util.TimeZone (JDK 1.1)

The TimeZone class represents a time zone; it is used with the Calendar and DateFormat classes.

As an abstract class, TimeZone cannot be directly instantiated. Instead, you should call the static getDefault() method to obtain a TimeZone object that represents the time zone inherited from the host operating system. Or, you should call getTimeZone() (also static), passing the name of the desired zone. You can obtain a list of the supported time zone names by calling the static getAvailableIDs() method.

Once you have a TimeZone object, you can call inDaylightTime() to determine whether, for a given Date, daylight savings time is in effect for that time zone. Call getID() to obtain the name of the time zone, and call getOffset() for a given date to determine the number of milliseconds to add to GMT to convert to the time zone.

public abstract class TimeZone extends Object implements Serializable, Cloneable {
    // Default Constructor: public TimeZone()
    // Class Methods
            public static synchronized String[] getAvailableIDs(int rawOffset);
            public static synchronized String[] getAvailableIDs();
            public static synchronized TimeZone getDefault();
            public static synchronized TimeZone getTimeZone(String ID);
            public static synchronized void setDefault(TimeZone zone);
    // Public Instance Methods
            public Object clone();  // Overrides Object
            public String getID();
            public abstract int getOffset(int era, int year, int month, int day, int dayOfWeek, int milliseconds);
            public abstract int getRawOffset();
            public abstract boolean inDaylightTime(Date date);
            public void setID(String ID);
            public abstract void setRawOffset(int offsetMillis);
            public abstract boolean useDaylightTime();
}

Extended By:

SimpleTimeZone

Passed To:

Calendar(), Calendar.getInstance(), Calendar.setTimeZone(), DateFormat.setTimeZone(), GregorianCalendar(), TimeZone.setDefault()

Returned By:

Calendar.getTimeZone(), DateFormat.getTimeZone(), TimeZone.getDefault(), TimeZone.getTimeZone()


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