What class / API should i used ?

Question

Hi, all
what api should i used when i want to know present time (hour-minute-second) or date... i've used :
GregorianCalendar kal = new GregorianCalendar();
int year=kal.YEAR;
instead i got year is 1 ??? (for present year !!) ...
it does the same as hour and minute... i dont have the exact time like the time in my win task bar.. plzzz help me...

Answer 1

This should help:
*  Calendar Demo (by Sun, with modifications)
import java.util.*;
public class CalendarDemo {
    public static void main(String[] args) {
// 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);
// 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.OCTOBER, -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);
// Change month numbering to 1-12
        int monthNumber = calendar.get(Calendar.MONTH)+1;
// begin output
        System.out.println("Current Time");
// 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: " + monthNumber);
        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
}