java中根据开始日期以及需要的工作日天数

/**
 * 根据开始日期 ，需要的工作日天数 ，计算工作截止日期，并返回截止日期
 * @param startDate 开始日期
 * @param workDay 工作日天数(周一到周五)
 * @return Date类型
 * @createTime 2019-11-08
 * @author XinQiangWang
 */
public static Date getWorkDay(Date startDate, int workDay) {
    Calendar c1 = Calendar.getInstance();
    c1.setTime(startDate);
    for (int i = 0; i < workDay; i++) {
        // 判断当天是否为周末，如果是周末加1
        if (Calendar.SATURDAY == c1.get(Calendar.SATURDAY) || Calendar.SUNDAY == c1.get(Calendar.SUNDAY)) {
            workDay = workDay + 1;
            c1.set(Calendar.DATE, c1.get(Calendar.DATE) + 1);
            continue;
        }
        c1.set(Calendar.DATE, c1.get(Calendar.DATE) + 1);
        // 当天数加1 判断是否为周末 如果是周末加1
        if (Calendar.SATURDAY == c1.get(Calendar.SATURDAY) || Calendar.SUNDAY == c1.get(Calendar.SUNDAY)) {
            workDay = workDay + 1;
            c1.set(Calendar.DATE, c1.get(Calendar.DATE) + 1);
            continue;
        }
    }
    //c1.set(Calendar.HOUR_OF_DAY, hour);
    //c1.set(Calendar.SECOND, second);
    //c1.set(Calendar.MINUTE, minute);
    //SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    //Date time = new Date(df.format(c1.getTime()));
    //SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    //String timeFormat = sdf.format(time);
    return c1.getTime();
}

public static void main(String [] args) throws ParseException {

    //String source = "2019-11-1 10:45:06";// 开始时间
    Date dates = new Date();//当前时间
    int workDay = 3;// 工作日天数
    SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 格式化时间
    String source = df.format(dates);// 格式化开始时间:2019-11-1 10:45:06
    //Date类型：df.parse(source)
    System.out.println(df.format(getWorkDay(df.parse(source), workDay)));//格式化输出时间：2019-11-13 10:34:32
}