public static List<String> getWorkDays(String date1,String date2)throws Exception{
    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
    //首先得到兩個日期之間的所有日期資訊
    List<String> allDays = new ArrayList<>();
    int dayTime = 24*60*60*1000;
    long d1 = format.parse(date1).getTime();
    long 
 
d2 = format.parse(date2).getTime();
    while(d2>=d1){
        String time = format.format(d1);
        allDays.add(time);
        d1+=dayTime;
    }

    //將得到的所有日期遍歷，將每個日期的星期資訊取出，然後將週日和週六的過濾掉即可
    Calendar calendar = Calendar.getInstance();
    List<String> workdays = new ArrayList<>();
    for
 
(String str : allDays){
        calendar.setTime(format.parse(str));
        int week = calendar.get(Calendar.DAY_OF_WEEK);
        if(week!=1 && week!=7){
            workdays.add(str);
        }
    }
    return workdays;
}

public static void main(String[] args) throws Exception{
    List<String> result = getWorkDays
 
("2018-02-01","2018-02-24");
    System.out.println(result);
}