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:Utils.java

public static Date getEndOfDay(Date day, Calendar cal) {
    if (day == null)
        day = new Date();
    cal.setTime(day);/*w ww  .ja  v  a  2  s .co  m*/
    cal.set(Calendar.HOUR_OF_DAY, cal.getMaximum(Calendar.HOUR_OF_DAY));
    cal.set(Calendar.MINUTE, cal.getMaximum(Calendar.MINUTE));
    cal.set(Calendar.SECOND, cal.getMaximum(Calendar.SECOND));
    cal.set(Calendar.MILLISECOND, cal.getMaximum(Calendar.MILLISECOND));
    return cal.getTime();
}

From source file:Main.java

/**
 * @param startDateTime/*  w w w.  j a v  a 2 s .  c om*/
 * @param endDateTime
 * @return the difference in hours between the second timestamp and first
 */
public static double getDifferenceInHours(Timestamp startDateTime, Timestamp endDateTime) {
    int difference = 0;

    Calendar startCalendar = Calendar.getInstance();
    startCalendar.setTime(startDateTime);

    Calendar endCalendar = Calendar.getInstance();
    endCalendar.setTime(endDateTime);

    // First, get difference in whole days
    Calendar startCompare = Calendar.getInstance();
    startCompare.setTime(startDateTime);
    startCompare.set(Calendar.HOUR_OF_DAY, 0);
    startCompare.set(Calendar.MINUTE, 0);

    Calendar endCompare = Calendar.getInstance();
    endCompare.setTime(endDateTime);
    endCompare.set(Calendar.HOUR_OF_DAY, 0);
    endCompare.set(Calendar.MINUTE, 0);

    return (endCalendar.getTimeInMillis() - startCalendar.getTimeInMillis()) / (60.0000 * 60.0000 * 1000.0000);
}

From source file:Main.java

/**
 * @param startDateTime//from   ww  w  .  ja v  a 2  s.  c  o  m
 * @param endDateTime
 * @return the difference in days between the second timestamp and first
 */
public static double getDifferenceInDays(Timestamp startDateTime, Timestamp endDateTime) {
    int difference = 0;

    Calendar startCalendar = Calendar.getInstance();
    startCalendar.setTime(startDateTime);

    Calendar endCalendar = Calendar.getInstance();
    endCalendar.setTime(endDateTime);

    // First, get difference in whole days
    Calendar startCompare = Calendar.getInstance();
    startCompare.setTime(startDateTime);
    startCompare.set(Calendar.HOUR_OF_DAY, 0);
    startCompare.set(Calendar.MINUTE, 0);
    startCompare.set(Calendar.SECOND, 0);
    startCompare.set(Calendar.MILLISECOND, 0);

    Calendar endCompare = Calendar.getInstance();
    endCompare.setTime(endDateTime);
    endCompare.set(Calendar.HOUR_OF_DAY, 0);
    endCompare.set(Calendar.MINUTE, 0);
    endCompare.set(Calendar.SECOND, 0);
    endCompare.set(Calendar.MILLISECOND, 0);

    return (endCompare.getTimeInMillis() - startCompare.getTimeInMillis()) / (24 * 60 * 60 * 1000);
}

From source file:com.joken.common.utils.ConverterUtils.java

/**
 * ?/*from www  . j a va 2  s .co m*/
 * 
 * @param time
 *            :08:30:00
 * @param separator
 *            :
 * @return 
 */
public static Long string2TimeSeconds(String time, String separator) {
    Calendar cl = Calendar.getInstance();
    String[] times = time.split(separator);
    cl.set(Calendar.HOUR_OF_DAY, Integer.valueOf(times[0]));
    cl.set(Calendar.MINUTE, Integer.valueOf(times[1]));
    cl.set(Calendar.SECOND, Integer.valueOf(times[2]));
    cl.set(Calendar.MILLISECOND, 0);
    return cl.getTimeInMillis() / 1000;
}

From source file:Main.java

public static Calendar createCalendar(int hour, int minute) {
    Calendar calendar = Calendar.getInstance();
    calendar.set(Calendar.HOUR_OF_DAY, hour);
    calendar.set(Calendar.MINUTE, minute);
    calendar.set(Calendar.SECOND, 0);
    return calendar;
}

From source file:Main.java

protected static String toString(GregorianCalendar g1) {
    StringBuilder buffer = new StringBuilder();

    buffer.append(//from  w  ww .j a  v a 2s  .  c om
            g1.get(Calendar.YEAR) + "/" + (g1.get(Calendar.MONTH) + 1) + "/" + g1.get(Calendar.DAY_OF_MONTH));
    buffer.append("  ");
    buffer.append(g1.get(Calendar.HOUR_OF_DAY) + ":" + g1.get(Calendar.MINUTE) + ":" + g1.get(Calendar.SECOND)
            + "." + g1.get(Calendar.MILLISECOND));

    return buffer.toString();
}

From source file:Main.java

@NonNull
static Date convertDate(int date, int time) {
    Calendar calendar = Calendar.getInstance();
    calendar.set(Calendar.YEAR, 1997);
    calendar.set(Calendar.MONTH, Calendar.JANUARY);
    calendar.set(Calendar.DAY_OF_MONTH, 1);
    calendar.set(Calendar.HOUR_OF_DAY, time / 60);
    calendar.set(Calendar.MINUTE, time % 60);

    calendar.add(Calendar.DATE, date);

    return calendar.getTime();
}

From source file:Main.java

public static int getCurrentHourColor() {
    final int hourOfDay = Calendar.getInstance().get(Calendar.HOUR_OF_DAY);
    return Color.parseColor(BACKGROUND_SPECTRUM[hourOfDay]);
}

From source file:Main.java

public Main() {
    JSpinner m_dateSpinner;//from   w w w.j  av  a 2  s  .  c  om
    SpinnerDateModel m_dateSpinnerModel;
    Calendar rightNow = Calendar.getInstance();

    Date current = rightNow.getTime();

    rightNow.set(Calendar.HOUR_OF_DAY, -24);
    Date start = rightNow.getTime();
    rightNow.set(Calendar.HOUR_OF_DAY, 48);
    Date end = rightNow.getTime();

    int step = Calendar.HOUR_OF_DAY;
    m_dateSpinnerModel = new SpinnerDateModel(current, start, end, step);
    m_dateSpinner = new JSpinner(m_dateSpinnerModel);
    add(m_dateSpinner);
}

From source file:Main.java

public static int[] getTime(long time, String timeZone) {
    Calendar c = Calendar.getInstance();
    if (timeZone != null && timeZone.length() != 0) {
        TimeZone tz = TimeZone.getTimeZone(timeZone);
        c = Calendar.getInstance(tz);
    }//  w w w. j  a va  2  s .co m
    c.setTimeInMillis(time);
    int y = c.get(Calendar.YEAR);
    int m = c.get(Calendar.MONTH);
    int d = c.get(Calendar.DAY_OF_MONTH);
    int hour = c.get(Calendar.HOUR_OF_DAY);
    int minute = c.get(Calendar.MINUTE);
    int second = c.get(Calendar.SECOND);
    return new int[] { y, m, d, hour, minute, second };
}

Example usage for java.util Calendar HOUR_OF_DAY

Introduction

Prototype

Document

Usage