java计算工作日，不包含节假日 代码实现

以下是Java中计算工作日的代码实现，不包含节假日：

import java.time.DayOfWeek;
import java.time.LocalDate;

public class WorkingDaysCalculator {

    public static void main(String[] args) {
        LocalDate startDate = LocalDate.of(2021, 10, 1);
        LocalDate endDate = LocalDate.of(2021, 10, 31);
        int workingDays = countWorkingDays(startDate, endDate);
        System.out.println("Working days between " + startDate + " and " + endDate + ": " + workingDays);
    }

    public static int countWorkingDays(LocalDate startDate, LocalDate endDate) {
        int workingDays = 0;
        LocalDate currentDate = startDate;
        while (currentDate.isBefore(endDate) || currentDate.isEqual(endDate)) {
            if (currentDate.getDayOfWeek() != DayOfWeek.SATURDAY && currentDate.getDayOfWeek() != DayOfWeek.SUNDAY) {
                workingDays++;
            }
            currentDate = currentDate.plusDays(1);
        }
        return workingDays;
    }
}

在以上代码中，我们使用了Java 8的日期时间API，即`java.time`包。`LocalDate`类表示一个日期，`DayOfWeek`枚举表示星期几。`countWorkingDays`方法使用一个循环来遍历给定日期范围内的每一天，并检查是否是星期六或星期日。如果是工作日，计数器`workingDays`就会加一。最后，该方法返回计数器的值，即工作日的总数。