java Gregorian_GregorianCalendar

// get the supported ids for GMT-08:00 (Pacific Standard Time)

String[] ids = TimeZone.getAvailableIDs(-8 * 60 * 60 * 1000);

// if no ids were returned, something is wrong. get out.

if (ids.length == 0)

System.exit(0);

// begin output

System.out.println("Current Time");

// create a Pacific Standard Time time zone

SimpleTimeZone pdt = new SimpleTimeZone(-8 * 60 * 60 * 1000, ids[0]);

// set up rules for daylight savings time

pdt.setStartRule(Calendar.APRIL, 1, Calendar.SUNDAY, 2 * 60 * 60 * 1000);

pdt.setEndRule(Calendar.0ctober, -1, Calendar.SUNDAY, 2 * 60 * 60 * 1000);

// create a GregorianCalendar with the Pacific Daylight time zone

// and the current date and time

Calendar calendar = new GregorianCalendar(pdt);

Date trialTime = new Date();

calendar.setTime(trialTime);

// print out a bunch of interesting things

System.out.println("ERA: " + calendar.get(Calendar.ERA));

System.out.println("YEAR: " + calendar.get(Calendar.YEAR));

System.out.println("MONTH: " + calendar.get(Calendar.MONTH));

System.out.println("WEEK_OF_YEAR: " + calendar.get(Calendar.WEEK_OF_YEAR));

System.out.println("WEEK_OF_MONTH: " + calendar.get(Calendar.WEEK_OF_MONTH));

System.out.println("DATE: " + calendar.get(Calendar.DATE));

System.out.println("DAY_OF_MONTH: " + calendar.get(Calendar.DAY_OF_MONTH));

System.out.println("DAY_OF_YEAR: " + calendar.get(Calendar.DAY_OF_YEAR));

System.out.println("DAY_OF_WEEK: " + calendar.get(Calendar.DAY_OF_WEEK));

System.out.println("DAY_OF_WEEK_IN_MONTH: "

+ calendar.get(Calendar.DAY_OF_WEEK_IN_MONTH));

System.out.println("AM_PM: " + calendar.get(Calendar.AM_PM));

System.out.println("HOUR: " + calendar.get(Calendar.HOUR));

System.out.println("HOUR_OF_DAY: " + calendar.get(Calendar.HOUR_OF_DAY));

System.out.println("MINUTE: " + calendar.get(Calendar.MINUTE));

System.out.println("SECOND: " + calendar.get(Calendar.SECOND));

System.out.println("MILLISECOND: " + calendar.get(Calendar.MILLISECOND));

System.out.println("ZONE_OFFSET: "

+ (calendar.get(Calendar.ZONE_OFFSET)/(60*60*1000)));

System.out.println("DST_OFFSET: "

+ (calendar.get(Calendar.DST_OFFSET)/(60*60*1000)));

System.out.println("Current Time, with hour reset to 3");

calendar.clear(Calendar.HOUR_OF_DAY); // so doesn't override

calendar.set(Calendar.HOUR, 3);

System.out.println("ERA: " + calendar.get(Calendar.ERA));

System.out.println("YEAR: " + calendar.get(Calendar.YEAR));

System.out.println("MONTH: " + calendar.get(Calendar.MONTH));

System.out.println("WEEK_OF_YEAR: " + calendar.get(Calendar.WEEK_OF_YEAR));

System.out.println("WEEK_OF_MONTH: " + calendar.get(Calendar.WEEK_OF_MONTH));

System.out.println("DATE: " + calendar.get(Calendar.DATE));

System.out.println("DAY_OF_MONTH: " + calendar.get(Calendar.DAY_OF_MONTH));

System.out.println("DAY_OF_YEAR: " + calendar.get(Calendar.DAY_OF_YEAR));

System.out.println("DAY_OF_WEEK: " + calendar.get(Calendar.DAY_OF_WEEK));

System.out.println("DAY_OF_WEEK_IN_MONTH: "

+ calendar.get(Calendar.DAY_OF_WEEK_IN_MONTH));

System.out.println("AM_PM: " + calendar.get(Calendar.AM_PM));

System.out.println("HOUR: " + calendar.get(Calendar.HOUR));

System.out.println("HOUR_OF_DAY: " + calendar.get(Calendar.HOUR_OF_DAY));

System.out.println("MINUTE: " + calendar.get(Calendar.MINUTE));

System.out.println("SECOND: " + calendar.get(Calendar.SECOND));

System.out.println("MILLISECOND: " + calendar.get(Calendar.MILLISECOND));

System.out.println("ZONE_OFFSET: "

+ (calendar.get(Calendar.ZONE_OFFSET)/(60*60*1000))); // in hours

System.out.println("DST_OFFSET: "

+ (calendar.get(Calendar.DST_OFFSET)/(60*60*1000))); // in hours