JAVA EE: How to use setDefault(TimeZone zone) method of java.util.TimeZone class

Monday 7 January 2019

How to use setDefault(TimeZone zone) method of java.util.TimeZone class | Java Date and Time

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TimeZoneDemo.java

import java.util.TimeZone;

public class TimeZoneDemo

{

    public static void main(String[] args)

    {

        TimeZone defaultTimeZone = TimeZone.getDefault();

        System.out.println("Before Set, defaultTimeZone = " + defaultTimeZone);

        TimeZone timeZone = TimeZone.getTimeZone("America/Los_Angeles");

        /*

         * Parameters:

         * 

         * zone - the new default TimeZone, or null

         */

        TimeZone.setDefault(timeZone);

        defaultTimeZone = TimeZone.getDefault();

        System.out.println("\nAfter Set, defaultTimeZone = " + defaultTimeZone);

    }

}

Output

    Before Set, defaultTimeZone = sun.util.calendar.ZoneInfo[id="Asia/Calcutta",offset=19800000,dstSavings=0,useDaylight=false,transitions=6,lastRule=null]

    After Set, defaultTimeZone = sun.util.calendar.ZoneInfo[id="America/Los_Angeles",offset=-28800000,dstSavings=3600000,useDaylight=true,transitions=185,lastRule=java.util.SimpleTimeZone[id=America/Los_Angeles,offset=-28800000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=3,startMonth=2,startDay=8,startDayOfWeek=1,startTime=7200000,startTimeMode=0,endMode=3,endMonth=10,endDay=1,endDayOfWeek=1,endTime=7200000,endTimeMode=0]]