获取一天的最大值和最小值

/**
 * 获取一天的最大值和最小值
 *
 * @param dto
 */
private Map<String, Date> getDateMaxAndMin(BpmProcessQueryDTO dto) {
    HashMap<String, Date> map = new HashMap<>();
    Date applyDate = dto.getStartTime();
    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
    String applyDateStr = format.format(applyDate);
    List<String> yearMonthDateList = StrUtil.split(applyDateStr, '-');
    Calendar c = Calendar.getInstance();
    c.set(Integer.valueOf(yearMonthDateList.get(0)), Integer.valueOf(yearMonthDateList.get(1)) - 1, Integer.valueOf(yearMonthDateList.get(2)));
    c.set(Calendar.HOUR_OF_DAY, 0);
    c.set(Calendar.MINUTE, 0);
    c.set(Calendar.SECOND, 0);
    c.set(Calendar.MILLISECOND, 0);
    Date applyDateMin = c.getTime();
    c.set(Calendar.HOUR_OF_DAY, 23);
    c.set(Calendar.MINUTE, 59);
    c.set(Calendar.SECOND, 59);
    c.set(Calendar.MILLISECOND, 999);
    Date applyDateMax = c.getTime();

    map.put("max", applyDateMax);
    map.put("min", applyDateMin);
    return map;
}