下面列出了java.util.Calendar#MONDAY 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
public static int getDayOfWeek(Date date) {
Calendar c = Calendar.getInstance(Locale.US);
c.setTime(date);
switch (c.get(Calendar.DAY_OF_WEEK)) {
case Calendar.MONDAY:
return DAY_MON;
case Calendar.TUESDAY:
return DAY_TUE;
case Calendar.WEDNESDAY:
return DAY_WED;
case Calendar.THURSDAY:
return DAY_THU;
case Calendar.FRIDAY:
return DAY_FRI;
case Calendar.SATURDAY:
return DAY_SAT;
case Calendar.SUNDAY:
return DAY_SUN;
default:
return DAY_MON;
}
}
/**
* Returns the milliseconds for midnight of the first Monday after
* 1-Jan-1900, ignoring daylight savings.
*
* @return The milliseconds.
*
* @since 1.0.7
*/
public static long firstMondayAfter1900() {
int offset = TimeZone.getDefault().getRawOffset();
TimeZone z = new SimpleTimeZone(offset, "UTC-" + offset);
// calculate midnight of first monday after 1/1/1900 relative to
// current locale
Calendar cal = new GregorianCalendar(z);
cal.set(1900, 0, 1, 0, 0, 0);
cal.set(Calendar.MILLISECOND, 0);
while (cal.get(Calendar.DAY_OF_WEEK) != Calendar.MONDAY) {
cal.add(Calendar.DATE, 1);
}
//return cal.getTimeInMillis();
// preceding code won't work with JDK 1.3
return cal.getTime().getTime();
}
private List<JCheckBox> createWeekendCheckBoxes(final GPCalendar calendar, String[] names) {
Supplier<Integer> counter = new Supplier<Integer>() {
@Override
public Integer get() {
int count = 0;
for (int i = 1; i <= 7; i++) {
if (calendar.getWeekDayType(i) == DayType.WEEKEND) {
count++;
}
}
return count;
}
};
List<JCheckBox> result = Lists.newArrayListWithExpectedSize(7);
int day = Calendar.MONDAY;
for (int i = 0; i < 7; i++) {
JCheckBox nextCheckBox = new JCheckBox();
nextCheckBox.setSelected(calendar.getWeekDayType(day) == GPCalendar.DayType.WEEKEND);
nextCheckBox.setAction(new CheckBoxAction(calendar, day, names[day - 1], nextCheckBox.getModel(), counter));
result.add(nextCheckBox);
if (++day >= 8) {
day = 1;
}
}
return result;
}
/**
* Convert a {@link Calendar} weekday value to the corresponding
* Bluetooth weekday code.
*/
private static byte getDayOfWeekCode(int dayOfWeek) {
switch (dayOfWeek) {
case Calendar.MONDAY:
return DAY_MONDAY;
case Calendar.TUESDAY:
return DAY_TUESDAY;
case Calendar.WEDNESDAY:
return DAY_WEDNESDAY;
case Calendar.THURSDAY:
return DAY_THURSDAY;
case Calendar.FRIDAY:
return DAY_FRIDAY;
case Calendar.SATURDAY:
return DAY_SATURDAY;
case Calendar.SUNDAY:
return DAY_SUNDAY;
default:
return DAY_UNKNOWN;
}
}
/**
* @param c
* @return String
* @Title:getWeekDay
* @Description: 判断是星期几.
*/
public static String getWeekDay(Calendar c) {
if (c == null) {
return "星期一";
}
switch (c.get(Calendar.DAY_OF_WEEK)) {
case Calendar.MONDAY:
return "星期一";
case Calendar.TUESDAY:
return "星期二";
case Calendar.WEDNESDAY:
return "星期三";
case Calendar.THURSDAY:
return "星期四";
case Calendar.FRIDAY:
return "星期五";
case Calendar.SATURDAY:
return "星期六";
default:
return "星期日";
}
}
public static DAYS valueOf(int dayValue){
switch (dayValue) {
case Calendar.MONDAY:
return MONDAY;
case Calendar.TUESDAY:
return TUESDAY;
case Calendar.WEDNESDAY:
return WEDNESDAY;
case Calendar.THURSDAY:
return THURSDAY;
case Calendar.FRIDAY:
return FRIDAY;
case Calendar.SATURDAY:
return SATURDAY;
case Calendar.SUNDAY:
return SUNDAY;
default:
return null;
}
}
public static Date getWeekBegin(Calendar tmp) {
if (tmp == null) {
return null;
}
Calendar ctmp =
new GregorianCalendar(tmp.get(Calendar.YEAR), tmp.get(Calendar.MONTH), tmp.get(Calendar.DAY_OF_MONTH));
int dw = ctmp.get(Calendar.DAY_OF_WEEK);
while (dw != Calendar.MONDAY) {
ctmp.add(Calendar.DATE, -1);
dw = ctmp.get(Calendar.DAY_OF_WEEK);
}
return ctmp.getTime();
}
/**
* 获得数字 i 所代表的星期，所对应的短字母.
* @param i
* 数字
* @return String
* 如果i = 1，返回 "S"(即 "SUNDAY" 的首字母)；
* 如果i = 2，返回 "M"(即 "MONDAY" 的首字母)；
* ...
* 如果i > 7 或 i < 1，返回空串"";
*/
public static String getDayName(int i) {
String dayname = "";
switch (i) {
case Calendar.MONDAY:
dayname = "M";
break;
case Calendar.TUESDAY:
dayname = "T";
break;
case Calendar.WEDNESDAY:
dayname = "W";
break;
case Calendar.THURSDAY:
dayname = "T";
break;
case Calendar.FRIDAY:
dayname = "F";
break;
case Calendar.SATURDAY:
dayname = "S";
break;
case Calendar.SUNDAY:
dayname = "S";
break;
default:
break;
}
return dayname;
}
public static Date getWeekBegin(Date date) {
if (date == null) {
return null;
}
Calendar cal = new GregorianCalendar();
cal.setTime(date);
int dw = cal.get(Calendar.DAY_OF_WEEK);
while (dw != Calendar.MONDAY) {
cal.add(Calendar.DATE, -1);
dw = cal.get(Calendar.DAY_OF_WEEK);
}
return cal.getTime();
}
public static void main(String[] args) {
Calendar czechCalendar = Calendar.getInstance(new Locale("cs"));
int firstDayOfWeek = czechCalendar.getFirstDayOfWeek();
if (firstDayOfWeek != Calendar.MONDAY) {
throw new RuntimeException();
}
}
/**
* @bug 4143951
* Russian first day of week should be Monday. Confirmed.
*/
public void Test4143951() {
Calendar cal = Calendar.getInstance(new Locale("ru", "", ""));
if (cal.getFirstDayOfWeek() != Calendar.MONDAY) {
errln("Fail: First day of week in Russia should be Monday");
}
}
@Override
public void onBindViewHolder(WeekForecastViewHolder holder, int position) {
Forecast f = forecastList.get(position);
setIcon(f.getWeatherID(), holder.weather);
holder.humidity.setText(StringFormatUtils.formatInt(f.getHumidity(), "%"));
Calendar c = new GregorianCalendar();
c.setTime(f.getLocalForecastTime(context));
int day = c.get(Calendar.DAY_OF_WEEK);
switch(day) {
case Calendar.MONDAY:
day = R.string.abbreviation_monday;
break;
case Calendar.TUESDAY:
day = R.string.abbreviation_tuesday;
break;
case Calendar.WEDNESDAY:
day = R.string.abbreviation_wednesday;
break;
case Calendar.THURSDAY:
day = R.string.abbreviation_thursday;
break;
case Calendar.FRIDAY:
day = R.string.abbreviation_friday;
break;
case Calendar.SATURDAY:
day = R.string.abbreviation_saturday;
break;
case Calendar.SUNDAY:
day = R.string.abbreviation_sunday;
break;
default:
day = R.string.abbreviation_monday;
}
holder.day.setText(day);
holder.temperature.setText(StringFormatUtils.formatTemperature(context, f.getTemperature()));
}
@Override
public Object compute(Object[] args, ExecutionContext ec) {
for (Object arg : args) {
if (ExecUtils.isNull(arg)) {
return null;
}
}
java.sql.Timestamp timestamp = DataType.TimestampType.convertFrom(args[0]);
Calendar cal = Calendar.getInstance();
cal.setTime(timestamp);
int dayname = cal.get(Calendar.DAY_OF_WEEK);
switch (dayname) {
case Calendar.SUNDAY:
return "Sunday";
case Calendar.MONDAY:
return "Monday";
case Calendar.TUESDAY:
return "Tuesday";
case Calendar.WEDNESDAY:
return "Wednesday";
case Calendar.THURSDAY:
return "Thursday";
case Calendar.FRIDAY:
return "Friday";
case Calendar.SATURDAY:
return "Saturday";
default:
throw new FunctionException("impossbile");
}
}
public static void main(String[] args) {
Calendar czechCalendar = Calendar.getInstance(new Locale("cs"));
int firstDayOfWeek = czechCalendar.getFirstDayOfWeek();
if (firstDayOfWeek != Calendar.MONDAY) {
throw new RuntimeException();
}
}
/**
* @bug 4143951
* Russian first day of week should be Monday. Confirmed.
*/
public void Test4143951() {
Calendar cal = Calendar.getInstance(new Locale("ru", "", ""));
if (cal.getFirstDayOfWeek() != Calendar.MONDAY) {
errln("Fail: First day of week in Russia should be Monday");
}
}
public static void main(String[] args) {
Calendar huCalendar = Calendar.getInstance(new Locale("hu","HU"));
int hufirstDayOfWeek = huCalendar.getFirstDayOfWeek();
if (hufirstDayOfWeek != Calendar.MONDAY) {
throw new RuntimeException();
}
Calendar ukCalendar = Calendar.getInstance(new Locale("uk","UA"));
int ukfirstDayOfWeek = ukCalendar.getFirstDayOfWeek();
if (ukfirstDayOfWeek != Calendar.MONDAY) {
throw new RuntimeException();
}
}
private static ArrayList<WeekdayTimer.Day> getExecutionDays(Long timerId) throws Exception {
ArrayList<WeekdayTimer.Day> days = new ArrayList<>();
String[] columns = {TimerWeekdayTable.COLUMN_EXECUTION_DAY};
Cursor cursor = DatabaseHandler.database.query(TimerWeekdayTable.TABLE_NAME, columns,
TimerWeekdayTable.COLUMN_TIMER_ID + "=" + timerId, null, null, null, null);
cursor.moveToFirst();
while (!cursor.isAfterLast()) {
switch (cursor.getInt(0)) {
case Calendar.MONDAY:
days.add(WeekdayTimer.Day.MONDAY);
break;
case Calendar.TUESDAY:
days.add(WeekdayTimer.Day.TUESDAY);
break;
case Calendar.WEDNESDAY:
days.add(WeekdayTimer.Day.WEDNESDAY);
break;
case Calendar.THURSDAY:
days.add(WeekdayTimer.Day.THURSDAY);
break;
case Calendar.FRIDAY:
days.add(WeekdayTimer.Day.FRIDAY);
break;
case Calendar.SATURDAY:
days.add(WeekdayTimer.Day.SATURDAY);
break;
case Calendar.SUNDAY:
days.add(WeekdayTimer.Day.SUNDAY);
break;
}
cursor.moveToNext();
}
cursor.close();
return days;
}
public String getMonday() {
return daysOfWeek[Calendar.MONDAY];
}
/**
* 获取某天是星期几
* @param date
* @return
*/
public static String getMonthDayWeek(Date date) {
Calendar c = Calendar.getInstance();
c.setTime(date);
int year = c.get(Calendar.YEAR); //获取年
int month = c.get(Calendar.MONTH) + 1; //获取月份，0表示1月份
int day = c.get(Calendar.DAY_OF_MONTH); //获取当前天数
int week = c.get(Calendar.DAY_OF_WEEK);
String weekStr = null;
switch (week) {
case Calendar.SUNDAY:
weekStr = "周日";
break;
case Calendar.MONDAY:
weekStr = "周一";
break;
case Calendar.TUESDAY:
weekStr = "周二";
break;
case Calendar.WEDNESDAY:
weekStr = "周三";
break;
case Calendar.THURSDAY:
weekStr = "周四";
break;
case Calendar.FRIDAY:
weekStr = "周五";
break;
case Calendar.SATURDAY:
weekStr = "周六";
break;
}
return month + "月" + day + "日" + "(" + weekStr + ")";
}
public String getMonday() {
return daysOfWeek[Calendar.MONDAY];
}