java 求两个日期间的工作日（无周六日）

@SuppressWarnings("deprecation")
public int getDutyDays(String strStartDate,String strEndDate) {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date startDate=null;
Date endDate = null;

try {
startDate=df.parse(strStartDate);
endDate = df.parse(strEndDate);
} catch (ParseException e) {
System.out.println("非法的日期格式,无法进行转换");
e.printStackTrace();
}
int result = 0;
while (startDate.compareTo(endDate) <= 0) {
if (startDate.getDay() != 6 && startDate.getDay() != 0)
result++;
startDate.setDate(startDate.getDate() + 1);
}

return result;
}