Example usage for java.util GregorianCalendar GregorianCalendar

Introduction

In this page you can find the example usage for java.util GregorianCalendar GregorianCalendar.

Prototype

public GregorianCalendar(Locale aLocale) 

Source Link

Document

Constructs a GregorianCalendar based on the current time in the default time zone with the given locale.

Usage

From source file:Main.java

public static void main(String[] args) {
    Calendar localTime = Calendar.getInstance();
    localTime.set(Calendar.HOUR, 17);
    localTime.set(Calendar.MINUTE, 15);
    localTime.set(Calendar.SECOND, 20);

    int hour = localTime.get(Calendar.HOUR);
    int minute = localTime.get(Calendar.MINUTE);
    int second = localTime.get(Calendar.SECOND);

    System.out.printf("Local time  : %02d:%02d:%02d\n", hour, minute, second);

    Calendar germanyTime = new GregorianCalendar(TimeZone.getTimeZone("Germany"));
    germanyTime.setTimeInMillis(localTime.getTimeInMillis());
    hour = germanyTime.get(Calendar.HOUR);
    minute = germanyTime.get(Calendar.MINUTE);
    second = germanyTime.get(Calendar.SECOND);

    System.out.printf("Germany time: %02d:%02d:%02d\n", hour, minute, second);
}

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From source file:Main.java

public static long convertTime(long timestamp, String fromTimeZone, String toTimeZone) {
    Calendar fromCal = new GregorianCalendar(TimeZone.getTimeZone(fromTimeZone));
    fromCal.setTimeInMillis(timestamp);//w  w w  . jav a 2  s . c o  m
    Calendar toCal = new GregorianCalendar(TimeZone.getTimeZone(toTimeZone));
    toCal.setTimeInMillis(fromCal.getTimeInMillis());
    return toCal.getTimeInMillis();
}

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From source file:Main.java

public static long convertTZ(long timestamp, String fromTimeZone, String toTimeZone) {
    Calendar fromCal = new GregorianCalendar(TimeZone.getTimeZone(fromTimeZone));
    fromCal.setTimeInMillis(timestamp);//ww w  .  jav a 2 s.c  om
    Calendar toCal = new GregorianCalendar(TimeZone.getTimeZone(toTimeZone));
    toCal.setTimeInMillis(fromCal.getTimeInMillis());
    return toCal.getTimeInMillis();
}

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From source file:Main.java

public static String getDateFromUTC(long timestamp) {
    if (timestamp == 0)
        timestamp = System.currentTimeMillis();
    Date date = new Date(timestamp);
    Calendar cal = new GregorianCalendar(TimeZone.getTimeZone("GMT"));
    cal.setTime(date);/* www  .java 2 s.c  o  m*/
    String val = (cal.get(Calendar.MONTH) + "/" + cal.get(Calendar.DATE) + " " + cal.get(Calendar.HOUR) + ":"
            + cal.get(Calendar.MINUTE) + (cal.get(Calendar.AM_PM) == 0 ? "AM" : "PM"));

    //      final Date currentTime = new Date();
    //      final SimpleDateFormat sdf = new SimpleDateFormat("EEE, MMM d, yyyy hh:mm:ss a z");
    //      sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
    //      String ret = "UTC time: " + sdf.format(currentTime);
    //      System.out.println(ret);

    return val;
}

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From source file:Main.java

public static XMLGregorianCalendar toXMLGregorianCalendarByTimeZone(Date date, TimeZone timeZone) {
    if (date == null)
        return null;
    GregorianCalendar calendar = new GregorianCalendar(timeZone);
    calendar.setTime(date);/*from   w  ww .  j av a 2  s .c  o m*/
    return newInstance.newXMLGregorianCalendar(calendar);
}

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From source file:Main.java

public static Function<Date, XMLGregorianCalendar> fromDate() {
    return new Function<Date, XMLGregorianCalendar>() {
        @Override/*from  w w  w  .j  a va  2 s .com*/
        public XMLGregorianCalendar apply(final Date date) {
            if (date == null)
                return null;
            return new XMLGregorianCalendarImpl(new GregorianCalendar(TimeZone.getDefault()) {
                {
                    setTime(date);
                }
            });
        }
    };
}

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From source file:Main.java

public static Calendar getCurrentCalendar() {

    Calendar currentCal = new GregorianCalendar(Locale.JAPAN);

    return currentCal;
}

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From source file:Main.java

public static long convertTime(long time) {
    GregorianCalendar t1 = new GregorianCalendar(TimeZone.getTimeZone("America/Los_Angeles"));
    t1.setTimeInMillis(time);//from w w  w .  java 2s. c om
    GregorianCalendar t2 = new GregorianCalendar();
    t2.set(t1.get(GregorianCalendar.YEAR), t1.get(GregorianCalendar.MONTH),
            t1.get(GregorianCalendar.DAY_OF_MONTH), t1.get(GregorianCalendar.HOUR_OF_DAY),
            t1.get(GregorianCalendar.MINUTE), t1.get(GregorianCalendar.SECOND));
    return t2.getTimeInMillis();
}

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From source file:Main.java

/**
 * Returns current unix date in GMT as long value
 *
 * @return current date as long/*from   w w  w  .jav a  2  s  . c om*/
 */
public static long getCurrentLongDate() {
    Calendar cal = new GregorianCalendar(TimeZone.getTimeZone("GMT"));

    return cal.getTime().getTime();
}

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From source file:DateParser.java

private static Calendar getCalendar(String isodate) {
    // YYYY-MM-DDThh:mm:ss.sTZD
    StringTokenizer st = new StringTokenizer(isodate, "-T:.+Z", true);

    Calendar calendar = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
    calendar.clear();//from w w  w  . jav  a2 s. c o  m
    try {
        // Year
        if (st.hasMoreTokens()) {
            int year = Integer.parseInt(st.nextToken());
            calendar.set(Calendar.YEAR, year);
        } else {
            return calendar;
        }
        // Month
        if (check(st, "-") && (st.hasMoreTokens())) {
            int month = Integer.parseInt(st.nextToken()) - 1;
            calendar.set(Calendar.MONTH, month);
        } else {
            return calendar;
        }
        // Day
        if (check(st, "-") && (st.hasMoreTokens())) {
            int day = Integer.parseInt(st.nextToken());
            calendar.set(Calendar.DAY_OF_MONTH, day);
        } else {
            return calendar;
        }
        // Hour
        if (check(st, "T") && (st.hasMoreTokens())) {
            int hour = Integer.parseInt(st.nextToken());
            calendar.set(Calendar.HOUR_OF_DAY, hour);
        } else {
            calendar.set(Calendar.HOUR_OF_DAY, 0);
            calendar.set(Calendar.MINUTE, 0);
            calendar.set(Calendar.SECOND, 0);
            calendar.set(Calendar.MILLISECOND, 0);
            return calendar;
        }
        // Minutes
        if (check(st, ":") && (st.hasMoreTokens())) {
            int minutes = Integer.parseInt(st.nextToken());
            calendar.set(Calendar.MINUTE, minutes);
        } else {
            calendar.set(Calendar.MINUTE, 0);
            calendar.set(Calendar.SECOND, 0);
            calendar.set(Calendar.MILLISECOND, 0);
            return calendar;
        }

        //
        // Not mandatory now
        //

        // Secondes
        if (!st.hasMoreTokens()) {
            return calendar;
        }
        String tok = st.nextToken();
        if (tok.equals(":")) { // secondes
            if (st.hasMoreTokens()) {
                int secondes = Integer.parseInt(st.nextToken());
                calendar.set(Calendar.SECOND, secondes);
                if (!st.hasMoreTokens()) {
                    return calendar;
                }
                // frac sec
                tok = st.nextToken();
                if (tok.equals(".")) {
                    // bug fixed, thx to Martin Bottcher
                    String nt = st.nextToken();
                    while (nt.length() < 3) {
                        nt += "0";
                    }
                    nt = nt.substring(0, 3); // Cut trailing chars..
                    int millisec = Integer.parseInt(nt);
                    // int millisec = Integer.parseInt(st.nextToken()) * 10;
                    calendar.set(Calendar.MILLISECOND, millisec);
                    if (!st.hasMoreTokens()) {
                        return calendar;
                    }
                    tok = st.nextToken();
                } else {
                    calendar.set(Calendar.MILLISECOND, 0);
                }
            } else {
                throw new RuntimeException("No secondes specified");
            }
        } else {
            calendar.set(Calendar.SECOND, 0);
            calendar.set(Calendar.MILLISECOND, 0);
        }
        // Timezone
        if (!tok.equals("Z")) { // UTC
            if (!(tok.equals("+") || tok.equals("-"))) {
                throw new RuntimeException("only Z, + or - allowed");
            }
            boolean plus = tok.equals("+");
            if (!st.hasMoreTokens()) {
                throw new RuntimeException("Missing hour field");
            }
            int tzhour = Integer.parseInt(st.nextToken());
            int tzmin = 0;
            if (check(st, ":") && (st.hasMoreTokens())) {
                tzmin = Integer.parseInt(st.nextToken());
            } else {
                throw new RuntimeException("Missing minute field");
            }
            if (plus) {
                calendar.add(Calendar.HOUR, -tzhour);
                calendar.add(Calendar.MINUTE, -tzmin);
            } else {
                calendar.add(Calendar.HOUR, tzhour);
                calendar.add(Calendar.MINUTE, tzmin);
            }
        }
    } catch (NumberFormatException ex) {
        throw new RuntimeException("[" + ex.getMessage() + "] is not an integer");
    }
    return calendar;
}

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