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在Java中,Calendar類可以用于計算工作日,即排除周末和節(jié)假日。為了提高可擴展性,可以采用以下設(shè)計:
public interface HolidayCalendar {
boolean isHoliday(Calendar date);
}
public class DefaultHolidayCalendar implements HolidayCalendar {
@Override
public boolean isHoliday(Calendar date) {
// 實現(xiàn)節(jié)假日判斷邏輯
return false;
}
}
public class CustomHolidayCalendar implements HolidayCalendar {
@Override
public boolean isHoliday(Calendar date) {
// 實現(xiàn)自定義節(jié)假日判斷邏輯
return false;
}
}
public class WorkdayCalculator {
public int calculateWorkdays(Calendar startDate, Calendar endDate, HolidayCalendar holidayCalendar) {
int workdays = 0;
Calendar current = (Calendar) startDate.clone();
while (current.before(endDate)) {
if (current.get(Calendar.DAY_OF_WEEK) != Calendar.SATURDAY && current.get(Calendar.DAY_OF_WEEK) != Calendar.SUNDAY
&& !holidayCalendar.isHoliday(current)) {
workdays++;
}
current.add(Calendar.DAY_OF_MONTH, 1);
}
return workdays;
}
}
public class Main {
public static void main(String[] args) {
Calendar startDate = Calendar.getInstance();
Calendar endDate = Calendar.getInstance();
endDate.add(Calendar.DAY_OF_MONTH, 10);
HolidayCalendar holidayCalendar = new DefaultHolidayCalendar();
WorkdayCalculator calculator = new WorkdayCalculator();
int workdays = calculator.calculateWorkdays(startDate, endDate, holidayCalendar);
System.out.println("工作日:" + workdays);
}
}
通過上述設(shè)計,可以輕松地擴展節(jié)假日計算方法,提高代碼的靈活性和可維護性。同時,還可以根據(jù)具體業(yè)務(wù)需求實現(xiàn)不同的節(jié)假日判斷邏輯。
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