Example usage for java.util Calendar HOUR_OF

Introduction

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

Prototype

int HOUR_OF_DAY

To view the source code for java.util Calendar HOUR_OF_DAY.

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Document

Field number for get and set indicating the hour of the day.

Usage

From source file:Main.java

public static void trimTimestamp(Calendar cal) {
    cal.set(Calendar.HOUR_OF_DAY, 0);
    cal.set(Calendar.MINUTE, 0);/* www  .  j  a v  a2 s . c  om*/
    cal.set(Calendar.SECOND, 0);
    cal.set(Calendar.MILLISECOND, 0);
}

From source file:Main.java

/** Convert a calendar date into a string as specified by http://tools.ietf.org/html/rfc822#section-5.1
 * @param date the calendar instance to convert to a string
 * @param locale the locale to use when outputting strings such as a day of the week, or month of the year.
 * @return a string in the format: "day_abbreviation, day_of_month month_abbreviation year hour:minute:second GMT"
 *///from w ww.ja  v a2 s  .  co m
// package-private - unused
static final String convertDateToStringRfc822(Calendar date, Locale locale) {
    Date a = Date.from(Instant.now());
    a.toString();
    int day = date.get(Calendar.DAY_OF_MONTH);
    int hour = date.get(Calendar.HOUR_OF_DAY);
    int minute = date.get(Calendar.MINUTE);
    int second = date.get(Calendar.SECOND);
    String str = date.getDisplayName(Calendar.DAY_OF_WEEK, Calendar.SHORT, locale) + ", "
            + (day < 10 ? "0" + day : day) + " " + date.getDisplayName(Calendar.MONTH, Calendar.SHORT, locale)
            + " " + date.get(Calendar.YEAR) + " " + (hour < 10 ? "0" + hour : hour) + ":"
            + (minute < 10 ? "0" + minute : minute) + ":" + (second < 10 ? "0" + second : second) + " GMT";
    return str;
}

From source file:Main.java

public static Time[] getTimesFromScheduleHour(char[] hoursArray) {

    Calendar begin = Calendar.getInstance();
    Calendar end = Calendar.getInstance();

    begin.set(Calendar.SECOND, 0);
    begin.set(Calendar.MILLISECOND, 0);
    end.set(Calendar.SECOND, 0);//from w  w  w  .jav a2  s.c  om
    end.set(Calendar.MILLISECOND, 0);

    char beginChar = hoursArray[0];
    char endChar = hoursArray[hoursArray.length - 1];

    switch (beginChar) {
    case 'A':
        begin.set(Calendar.HOUR_OF_DAY, 7);
        begin.set(Calendar.MINUTE, 30);
        break;
    case 'B':
        begin.set(Calendar.HOUR_OF_DAY, 8);
        begin.set(Calendar.MINUTE, 20);
        break;
    case 'C':
        begin.set(Calendar.HOUR_OF_DAY, 9);
        begin.set(Calendar.MINUTE, 10);
        break;
    case 'D':
        begin.set(Calendar.HOUR_OF_DAY, 10);
        begin.set(Calendar.MINUTE, 10);
        break;
    case 'E':
        begin.set(Calendar.HOUR_OF_DAY, 11);
        begin.set(Calendar.MINUTE, 10);
        break;
    case 'F':
        begin.set(Calendar.HOUR_OF_DAY, 12);
        begin.set(Calendar.MINUTE, 0);
        break;
    case 'G':
        begin.set(Calendar.HOUR_OF_DAY, 13);
        begin.set(Calendar.MINUTE, 0);
        break;
    case 'H':
        begin.set(Calendar.HOUR_OF_DAY, 13);
        begin.set(Calendar.MINUTE, 50);
        break;
    case 'I':
        begin.set(Calendar.HOUR_OF_DAY, 14);
        begin.set(Calendar.MINUTE, 50);
        break;
    case 'J':
        begin.set(Calendar.HOUR_OF_DAY, 15);
        begin.set(Calendar.MINUTE, 40);
        break;
    case 'L':
        begin.set(Calendar.HOUR_OF_DAY, 16);
        begin.set(Calendar.MINUTE, 40);
        break;
    case 'M':
        begin.set(Calendar.HOUR_OF_DAY, 17);
        begin.set(Calendar.MINUTE, 30);
        break;
    case 'N':
        begin.set(Calendar.HOUR_OF_DAY, 18);
        begin.set(Calendar.MINUTE, 30);
        break;
    case 'O':
        begin.set(Calendar.HOUR_OF_DAY, 19);
        begin.set(Calendar.MINUTE, 20);
        break;
    case 'P':
        begin.set(Calendar.HOUR_OF_DAY, 20);
        begin.set(Calendar.MINUTE, 20);
        break;
    case 'Q':
        begin.set(Calendar.HOUR_OF_DAY, 21);
        begin.set(Calendar.MINUTE, 10);
        break;
    default:
        return null;
    }

    switch (endChar) {
    case 'A':
        end.set(Calendar.HOUR_OF_DAY, 8);
        end.set(Calendar.MINUTE, 20);
        break;
    case 'B':
        end.set(Calendar.HOUR_OF_DAY, 9);
        end.set(Calendar.MINUTE, 10);
        break;
    case 'C':
        end.set(Calendar.HOUR_OF_DAY, 10);
        end.set(Calendar.MINUTE, 10);
        break;
    case 'D':
        end.set(Calendar.HOUR_OF_DAY, 11);
        end.set(Calendar.MINUTE, 0);
        break;
    case 'E':
        end.set(Calendar.HOUR_OF_DAY, 12);
        end.set(Calendar.MINUTE, 0);
        break;
    case 'F':
        end.set(Calendar.HOUR_OF_DAY, 12);
        end.set(Calendar.MINUTE, 50);
        break;
    case 'G':
        end.set(Calendar.HOUR_OF_DAY, 13);
        end.set(Calendar.MINUTE, 50);
        break;
    case 'H':
        end.set(Calendar.HOUR_OF_DAY, 14);
        end.set(Calendar.MINUTE, 40);
        break;
    case 'I':
        end.set(Calendar.HOUR_OF_DAY, 15);
        end.set(Calendar.MINUTE, 40);
        break;
    case 'J':
        end.set(Calendar.HOUR_OF_DAY, 16);
        end.set(Calendar.MINUTE, 30);
        break;
    case 'L':
        end.set(Calendar.HOUR_OF_DAY, 17);
        end.set(Calendar.MINUTE, 30);
        break;
    case 'M':
        end.set(Calendar.HOUR_OF_DAY, 18);
        end.set(Calendar.MINUTE, 20);
        break;
    case 'N':
        end.set(Calendar.HOUR_OF_DAY, 19);
        end.set(Calendar.MINUTE, 20);
        break;
    case 'O':
        end.set(Calendar.HOUR_OF_DAY, 20);
        end.set(Calendar.MINUTE, 10);
        break;
    case 'P':
        end.set(Calendar.HOUR_OF_DAY, 21);
        end.set(Calendar.MINUTE, 10);
        break;
    case 'Q':
        end.set(Calendar.HOUR_OF_DAY, 22);
        end.set(Calendar.MINUTE, 0);
        break;
    default:
        return null;
    }

    return new Time[] { new Time(begin.getTimeInMillis()), new Time(end.getTimeInMillis()) };
}

From source file:Main.java

public static long getTomorrowZeroTimeInMillis() {
    Calendar calendar = getZeroSecondCalendar();
    calendar.add(Calendar.DAY_OF_YEAR, 1);
    calendar.set(Calendar.HOUR_OF_DAY, 0);
    calendar.set(Calendar.MINUTE, 0);
    return calendar.getTimeInMillis();
}

From source file:Main.java

public static String date2String(Date date, boolean printTime) {
    Calendar cal = new GregorianCalendar();
    cal.setTime(date);//from  ww w . j a  v  a2 s  .c o  m
    if (cal.get(Calendar.YEAR) > 10000) {
        return "---";
    }
    return makeTimeString(cal.get(Calendar.DAY_OF_MONTH), 2) + "."
            + makeTimeString(cal.get(Calendar.MONTH) + 1, 2) + "." + makeTimeString(cal.get(Calendar.YEAR), 4)
            + (printTime
                    ? " " + makeTimeString(cal.get(Calendar.HOUR_OF_DAY), 2) + ":"
                            + makeTimeString(cal.get(Calendar.MINUTE), 2) + ":"
                            + makeTimeString(cal.get(Calendar.SECOND), 2)
                    : "");
}

From source file:Main.java

/** Converts a Macintosh-style timestamp (seconds since
 *  January 1, 1904) into a Java date.  The timestamp is
 *  treated as a time in the default localization.
 *  Depending on that localization,//from   www .j av a2s . co m
 *  there may be some variation in the exact hour of the date 
 *  returned, e.g., due to daylight savings time.
 * 
 */
public static Date timestampToDate(long timestamp) {
    Calendar cal = Calendar.getInstance();
    cal.set(1904, 0, 1, 0, 0, 0);

    // If we add the seconds directly, we'll truncate the long
    // value when converting to int.  So convert to hours plus
    // residual seconds.
    int hours = (int) (timestamp / 3600);
    int seconds = (int) (timestamp - (long) hours * 3600L);
    cal.add(Calendar.HOUR_OF_DAY, hours);
    cal.add(Calendar.SECOND, seconds);
    Date dat = cal.getTime();
    return dat;
}

From source file:Main.java

/**
 * @param time selected in TimePicker/*from w w w .  ja va2 s  . c  om*/
 * @return Converted to calendar
 */

public static Calendar timeToCalendar(String time) {
    Calendar calTime = Calendar.getInstance();
    calTime.set(Calendar.HOUR_OF_DAY, Integer.parseInt(time.split(":")[0]));
    calTime.set(Calendar.MINUTE, Integer.parseInt(time.split(":")[1]));
    return calTime;
}

From source file:Main.java

public static void zeroFromHour(Calendar calendar) {
    calendar.set(Calendar.HOUR_OF_DAY, 0);
    calendar.set(Calendar.MINUTE, 0);
    calendar.set(Calendar.SECOND, 0);
    calendar.set(Calendar.MILLISECOND, 0);
}

From source file:Main.java

/** Helper method - creates a Phoenix date <I>String</I> from a Date object.
   @param dteValue <I>Date</I> object to be converted.
   @return A <I>String</I> that follows the format "YYYY-MM-DDTHH:NN:SS.00000".
 *//*from   w ww . j  av  a  2s  . c  o  m*/
public static String getXMLStringFromDate(Date dteValue) {
    if (null == dteValue)
        return null;

    Calendar pCalendar = Calendar.getInstance();

    pCalendar.setTime(dteValue);

    // Return the String value.
    // Special treatment for the month because the current implementation
    // values January as 0. Code below should work if that ever changes.
    return pCalendar.get(Calendar.YEAR) + "-" + padNumber(pCalendar.get(Calendar.MONTH) + 1 - Calendar.JANUARY)
            + "-" + padNumber(pCalendar.get(Calendar.DAY_OF_MONTH)) + "T"
            + padNumber(pCalendar.get(Calendar.HOUR_OF_DAY)) + ":" + padNumber(pCalendar.get(Calendar.MINUTE))
            + ":" + padNumber(pCalendar.get(Calendar.SECOND));
}

From source file:Main.java

/**
 * Calculate the Julian Day for a given date using the following formula:
 * JD = 367 * Y - INT(7 * (Y + INT((M + 9)/12))/4) + INT(275 * M / 9)
 *      + D + 1721013.5 + UT/24/*w  w w  .ja  va  2 s . c  o m*/
 *
 * Note that this is only valid for the year range 1900 - 2099.
 */
public static double calculateJulianDay(Date date) {
    Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("GMT"));
    cal.setTime(date);

    double hour = cal.get(Calendar.HOUR_OF_DAY) + cal.get(Calendar.MINUTE) / 60.0f
            + cal.get(Calendar.SECOND) / 3600.0f;

    int year = cal.get(Calendar.YEAR);
    int month = cal.get(Calendar.MONTH) + 1;
    int day = cal.get(Calendar.DAY_OF_MONTH);

    double jd = 367.0 * year - Math.floor(7.0 * (year + Math.floor((month + 9.0) / 12.0)) / 4.0)
            + Math.floor(275.0 * month / 9.0) + day + 1721013.5 + hour / 24.0;
    return jd;
}

Example usage for java.util Calendar HOUR_OF_DAY

Introduction

Prototype

Document

Usage