import java.util.*;
import java.text.*;

public class Datumtest {
    public static void main(String[] args) {

        // Klassen Date

        Date nu = new Date();
        // Milliseconds since January 1, 1970, 00:00:00 GMT
        Date start = new Date(0);
        Date biljon = new Date(1000000000000L);

        System.out.println("nu = " + nu);
        System.out.println("start = " + start);
        System.out.println("biljon = " + biljon);

        // Klassen TimeZone

        TimeZone dtz = TimeZone.getDefault();
        System.out.println("dtz = " + dtz);
        String[] ids = TimeZone.getAvailableIDs();

        System.out.println("Det finns " +
                           ids.length + " tidszoner:");
        for (int i = 0; i < ids.length; ++i)
            System.out.println("    " + i + ". " + ids[i]);

        TimeZone tokyo = TimeZone.getTimeZone("Asia/Tokyo");
        TimeZone.setDefault(tokyo);
        System.out.println("nu = " + nu);

        TimeZone.setDefault(dtz);
        System.out.println("nu = " + nu);

        // Klassen Calendar

        Calendar c = Calendar.getInstance();
        System.out.println("c = " + c);

        Calendar ct = Calendar.getInstance(tokyo);
        System.out.println("ct = " + ct);

        System.out.println("Veckonummer (locale-dependent!): " +
                           c.get(Calendar.WEEK_OF_YEAR));
        System.out.println("År: " + c.get(Calendar.YEAR));
        System.out.println("Månad: " + c.get(Calendar.MONTH));
        System.out.println("Dag: " + c.get(Calendar.DAY_OF_MONTH));
        System.out.println("Timmar: " + c.get(Calendar.HOUR_OF_DAY));
        System.out.println("Timmar (0-12): " + c.get(Calendar.HOUR));
        System.out.println("Minuter: " + c.get(Calendar.MINUTE));
        System.out.println("Sekunder: " + c.get(Calendar.SECOND));
        System.out.println("Millisekunder: " + c.get(Calendar.MILLISECOND));

        System.out.println("Tokyo 1: " +
                           ct.get(Calendar.HOUR_OF_DAY) +
                           ":" +
                           ct.get(Calendar.MINUTE));

        ct.setTimeZone(dtz);
        System.out.println("Tokyo 2: " +
                           ct.get(Calendar.HOUR_OF_DAY) +
                           ":" +
                           ct.get(Calendar.MINUTE));

        ct.setTime(biljon);
        System.out.println("Tokyo 3: " +
                           ct.get(Calendar.HOUR_OF_DAY) +
                           ":" +
                           ct.get(Calendar.MINUTE));

        ct.add(Calendar.MINUTE, 99);
        System.out.println("Tokyo 4: " +
                           ct.get(Calendar.HOUR_OF_DAY) +
                           ":" +
                           ct.get(Calendar.MINUTE));

        // Klassen DateFormat

        DateFormat f1 = DateFormat.getInstance();
        DateFormat f2 = DateFormat.getTimeInstance();
        DateFormat f3 = DateFormat.getDateInstance();
        DateFormat f4 = DateFormat.getDateInstance(DateFormat.SHORT);
        DateFormat f5 = DateFormat.getDateInstance(DateFormat.MEDIUM);
        DateFormat f6 = DateFormat.getDateInstance(DateFormat.LONG);
        DateFormat f7 = DateFormat.getDateInstance(DateFormat.FULL);
        DateFormat f8 = DateFormat.getDateTimeInstance(DateFormat.LONG,
                                                       DateFormat.LONG);

        System.out.println("f1.format(nu) = " + f1.format(nu));
        System.out.println("f2.format(nu) = " + f2.format(nu));
        System.out.println("f3.format(nu) = " + f3.format(nu));
        System.out.println("f4.format(nu) = " + f4.format(nu));
        System.out.println("f5.format(nu) = " + f5.format(nu));
        System.out.println("f6.format(nu) = " + f6.format(nu));
        System.out.println("f7.format(nu) = " + f7.format(nu));
        System.out.println("f8.format(nu) = " + f8.format(nu));

        // Lokala konventioner

        Locale[] locales = Calendar.getAvailableLocales();
        System.out.println("Det finns " +
                           locales.length + " locales:");
        for (int i = 0; i < locales.length; ++i)
            System.out.println("    " + i + ". " + locales[i]);

        Locale dl = Locale.getDefault();
        System.out.println("dl = " + dl);

        Locale sverige = new Locale("sv", "SE");
        Locale.setDefault(sverige);

        DateFormat f9 = DateFormat.getDateTimeInstance(DateFormat.LONG,
                                                       DateFormat.LONG);
        System.out.println("f9.format(nu) = " + f9.format(nu));
    }
} // class Datumtest