java.util.Calendar.getFirstDayOfWeek()方法的使用及代码示例

x33g5p2x  于2022-01-17 转载在 其他  
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本文整理了Java中java.util.Calendar.getFirstDayOfWeek()方法的一些代码示例，展示了Calendar.getFirstDayOfWeek()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Calendar.getFirstDayOfWeek()方法的具体详情如下：
包路径：java.util.Calendar
类名称：Calendar
方法名：getFirstDayOfWeek

Calendar.getFirstDayOfWeek介绍

[英]Returns the first day of the week for this Calendar.
[中]

代码示例

代码示例来源：origin: stackoverflow.com

// get today and clear time of day
Calendar cal = Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY, 0); // ! clear would not reset the hour of day !
cal.clear(Calendar.MINUTE);
cal.clear(Calendar.SECOND);
cal.clear(Calendar.MILLISECOND);

// get start of this week in milliseconds
cal.set(Calendar.DAY_OF_WEEK, cal.getFirstDayOfWeek());
System.out.println("Start of this week:       " + cal.getTime());
System.out.println("... in milliseconds:      " + cal.getTimeInMillis());

// start of the next week
cal.add(Calendar.WEEK_OF_YEAR, 1);
System.out.println("Start of the next week:   " + cal.getTime());
System.out.println("... in milliseconds:      " + cal.getTimeInMillis());

代码示例来源：origin: camunda/camunda-bpm-platform

public static long computeStartOfNextWeek(long now) {
 Calendar cal = Calendar.getInstance();
 cal.setTime(new Date(now));
 
 cal.set(Calendar.DAY_OF_WEEK, cal.getFirstDayOfWeek());
 cal.set(Calendar.HOUR_OF_DAY, 0);
 cal.set(Calendar.MINUTE, 0);
 cal.set(Calendar.SECOND, 0);
 cal.set(Calendar.MILLISECOND, 0);
 cal.add(Calendar.WEEK_OF_YEAR, 1);
 return cal.getTime().getTime();
}

代码示例来源：origin: com.liferay.portal/com.liferay.portal.kernel

/**
 * Method setDtStart
 */
public void setDtStart(Calendar start) {
  int oldStart = 0;
  if (dtStart != null) {
    oldStart = dtStart.getFirstDayOfWeek();
  }
  else {
    oldStart = Calendar.MONDAY;
  }
  if (start == null) {
    dtStart = CalendarFactoryUtil.getCalendar(
      TimeZoneUtil.getTimeZone(StringPool.UTC));
    dtStart.setTime(new Date(0L));
  }
  else {
    dtStart = (Calendar)start.clone();
    dtStart.clear(Calendar.ZONE_OFFSET);
    dtStart.clear(Calendar.DST_OFFSET);
    dtStart.setTimeZone(TimeZoneUtil.getTimeZone(StringPool.UTC));
  }
  dtStart.setMinimalDaysInFirstWeek(4);
  dtStart.setFirstDayOfWeek(oldStart);
  dtStart.set(Calendar.SECOND, 0);
  dtStart.set(Calendar.MILLISECOND, 0);
}

代码示例来源：origin: lcw2004/one

public static Date getFirstDayOfWeek(Date date) {
  Calendar calendar = Calendar.getInstance();
  calendar.setFirstDayOfWeek(Calendar.MONDAY);
  calendar.setTime(date);
  calendar.set(Calendar.DAY_OF_WEEK, calendar.getFirstDayOfWeek());
  calendar.set(Calendar.HOUR_OF_DAY, 0);
  calendar.set(Calendar.MINUTE, 0);
  calendar.set(Calendar.SECOND, 0);
  return calendar.getTime();
}

代码示例来源：origin: i2p/i2p.i2p

break;
case MINUTE:
  calendar.set(Calendar.SECOND, 0);
  calendar.add(Calendar.MINUTE, -(calendar.get(Calendar.MINUTE) % timeUnitCount));
  break;
case HOUR:
  calendar.set(Calendar.SECOND, 0);
  calendar.set(Calendar.MINUTE, 0);
  calendar.add(Calendar.HOUR_OF_DAY, -(calendar.get(Calendar.HOUR_OF_DAY) % timeUnitCount));
  break;
  calendar.set(Calendar.MINUTE, 0);
  calendar.set(Calendar.HOUR_OF_DAY, 0);
  int diffDays = calendar.get(Calendar.DAY_OF_WEEK) - calendar.getFirstDayOfWeek();
  if (diffDays < 0) {
    diffDays += 7;

代码示例来源：origin: iSoron/uhabits

/**
 * @return array with week days numbers starting according to locale
 * settings, e.g. [2,3,4,5,6,7,1] in Europe
 */
public static Integer[] getLocaleWeekdayList()
{
  Integer[] dayNumbers = new Integer[7];
  Calendar calendar = new GregorianCalendar();
  calendar.set(DAY_OF_WEEK, calendar.getFirstDayOfWeek());
  for (int i = 0; i < dayNumbers.length; i++)
  {
    dayNumbers[i] = calendar.get(DAY_OF_WEEK);
    calendar.add(DAY_OF_MONTH, 1);
  }
  return dayNumbers;
}

代码示例来源：origin: com.liferay.portal/com.liferay.portal.kernel

myCurrent.setTimeZone(TimeZoneUtil.getTimeZone(StringPool.UTC));
myCurrent.setMinimalDaysInFirstWeek(4);
myCurrent.setFirstDayOfWeek(dtStart.getFirstDayOfWeek());
myCurrent.set(Calendar.SECOND, 0);
myCurrent.set(Calendar.MILLISECOND, 0);

代码示例来源：origin: lcw2004/one

public static Date getLastDayOfWeek(Date date) {
  Calendar calendar = Calendar.getInstance();
  calendar.setFirstDayOfWeek(Calendar.MONDAY);
  calendar.setTime(date);
  calendar.set(Calendar.DAY_OF_WEEK, calendar.getFirstDayOfWeek() + 6);
  calendar.set(Calendar.HOUR_OF_DAY, 23);
  calendar.set(Calendar.MINUTE, 59);
  calendar.set(Calendar.SECOND, 59);
  return calendar.getTime();
}

代码示例来源：origin: camunda/camunda-bpm-platform

this.set(Calendar.SECOND, 0);
this.set(Calendar.MILLISECOND, 0);
this.add(Calendar.MINUTE, 1);
break;
case DailyRollingFileAppender.TOP_OF_HOUR:
this.set(Calendar.MINUTE, 0);
this.set(Calendar.SECOND, 0);
this.set(Calendar.MILLISECOND, 0);
break;
case DailyRollingFileAppender.TOP_OF_WEEK:
this.set(Calendar.DAY_OF_WEEK, getFirstDayOfWeek());
this.set(Calendar.HOUR_OF_DAY, 0);
this.set(Calendar.SECOND, 0);

代码示例来源：origin: ZHENFENG13/My-Blog

public static Date getThisWeekStartTime() {
  Calendar today = Calendar.getInstance();
  today.set(7, today.getFirstDayOfWeek());
  Calendar weekFirstDay = Calendar.getInstance();
  weekFirstDay.clear();
  weekFirstDay.set(1, today.get(1));
  weekFirstDay.set(2, today.get(2));
  weekFirstDay.set(5, today.get(5));
  return weekFirstDay.getTime();
}

代码示例来源：origin: KylinOLAP/Kylin

cal.setTime(temp);
cal.set(Calendar.DAY_OF_WEEK, cal.getFirstDayOfWeek());

代码示例来源：origin: jenkinsci/jenkins

@Override
  void setTo(Calendar c, int i) {
    int v = i-offset;
    int was = c.get(field);
    c.set(field,v);
    final int firstDayOfWeek = c.getFirstDayOfWeek();
    if (v < firstDayOfWeek && was >= firstDayOfWeek) {
      // in crontab, the first DoW is always Sunday, but in Java, it can be Monday or in theory arbitrary other days.
      // When first DoW is 1/2 Monday, calendar points to 1/2 Monday, setting the DoW to Sunday makes
      // the calendar moves forward to 1/8 Sunday, instead of 1/1 Sunday. So we need to compensate that effect here.
      addTo(c,-7);
    } else if (was < firstDayOfWeek && firstDayOfWeek <= v) {
      // If we wrap the other way around, we need to adjust in the opposite direction of above.
      addTo(c, 7);
    }
  }
};

代码示例来源：origin: KylinOLAP/Kylin

cal.setTime(temp);
cal.set(Calendar.DAY_OF_WEEK, cal.getFirstDayOfWeek());

代码示例来源：origin: stackoverflow.com

public static void main(String[] args) {

  // set the date
  Calendar cal = Calendar.getInstance();
  cal.set(2011, 10 - 1, 12);

  // "calculate" the start date of the week
  Calendar first = (Calendar) cal.clone();
  first.add(Calendar.DAY_OF_WEEK, 
       first.getFirstDayOfWeek() - first.get(Calendar.DAY_OF_WEEK));

  // and add six days to the end date
  Calendar last = (Calendar) first.clone();
  last.add(Calendar.DAY_OF_YEAR, 6);

  // print the result
  SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
  System.out.println(df.format(first.getTime()) + " -> " + 
            df.format(last.getTime()));
}

代码示例来源：origin: ch.qos.logback/core

public static long computeStartOfNextWeek(long now) {
 Calendar cal = Calendar.getInstance();
 cal.setTime(new Date(now));
 
 cal.set(Calendar.DAY_OF_WEEK, cal.getFirstDayOfWeek());
 cal.set(Calendar.HOUR_OF_DAY, 0);
 cal.set(Calendar.MINUTE, 0);
 cal.set(Calendar.SECOND, 0);
 cal.set(Calendar.MILLISECOND, 0);
 cal.add(Calendar.WEEK_OF_YEAR, 1);
 return cal.getTime().getTime();
}

代码示例来源：origin: iSoron/uhabits

/**
 * @return array with weekday names starting according to locale settings,
 * e.g. [Mo,Di,Mi,Do,Fr,Sa,So] in Germany
 */
public static String[] getLocaleDayNames(int format)
{
  String[] days = new String[7];
  Calendar calendar = new GregorianCalendar();
  calendar.set(DAY_OF_WEEK, calendar.getFirstDayOfWeek());
  for (int i = 0; i < days.length; i++)
  {
    days[i] = calendar.getDisplayName(DAY_OF_WEEK, format,
      getLocale());
    calendar.add(DAY_OF_MONTH, 1);
  }
  return days;
}

代码示例来源：origin: com.hynnet/logback-core

public static long computeStartOfNextWeek(long now) {
 Calendar cal = Calendar.getInstance();
 cal.setTime(new Date(now));
 
 cal.set(Calendar.DAY_OF_WEEK, cal.getFirstDayOfWeek());
 cal.set(Calendar.HOUR_OF_DAY, 0);
 cal.set(Calendar.MINUTE, 0);
 cal.set(Calendar.SECOND, 0);
 cal.set(Calendar.MILLISECOND, 0);
 cal.add(Calendar.WEEK_OF_YEAR, 1);
 return cal.getTime().getTime();
}

代码示例来源：origin: wdullaer/MaterialDateTimePicker

mToday = -1;
mCalendar.set(Calendar.MONTH, mMonth);
mCalendar.set(Calendar.YEAR, mYear);
mCalendar.set(Calendar.DAY_OF_MONTH, 1);
mDayOfWeekStart = mCalendar.get(Calendar.DAY_OF_WEEK);
  mWeekStart = weekStart;
} else {
  mWeekStart = mCalendar.getFirstDayOfWeek();

代码示例来源：origin: at.bestsolution.efxclipse.eclipse/ch.qos.logback.core

public static long computeStartOfNextWeek(long now) {
 Calendar cal = Calendar.getInstance();
 cal.setTime(new Date(now));
 
 cal.set(Calendar.DAY_OF_WEEK, cal.getFirstDayOfWeek());
 cal.set(Calendar.HOUR_OF_DAY, 0);
 cal.set(Calendar.MINUTE, 0);
 cal.set(Calendar.SECOND, 0);
 cal.set(Calendar.MILLISECOND, 0);
 cal.add(Calendar.WEEK_OF_YEAR, 1);
 return cal.getTime().getTime();
}

代码示例来源：origin: wangdan/AisenWeiBo

mToday = -1;
mCalendar.set(Calendar.MONTH, mMonth);
mCalendar.set(Calendar.YEAR, mYear);
mCalendar.set(Calendar.DAY_OF_MONTH, 1);
mDayOfWeekStart = mCalendar.get(Calendar.DAY_OF_WEEK);
  mWeekStart = params.get(VIEW_PARAMS_WEEK_START);
} else {
  mWeekStart = mCalendar.getFirstDayOfWeek();

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