1 public class DateUtil {
2
3 private static final ZoneId ZONE_ID = ZoneId.systemDefault();
4 private static final DateTimeFormatter DATETIME = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
5 private static final DateTimeFormatter DATE = DateTimeFormatter.ofPattern("yyyy-MM-dd");
6 private static final DateTimeFormatter SHORT_DATE = DateTimeFormatter.ofPattern("yyyyMMdd");
7
8 public static String toDatetimeString(Date date){
9 return date != null ? DATETIME.format(date.toInstant().atZone(ZONE_ID).toLocalDateTime()) : null;
10 }
11
12 public static String toDateString(Date date){
13 return date != null ? DATE.format(date.toInstant().atZone(ZONE_ID).toLocalDate()) : null;
14 }
15
16 public static String toShortDateString(Date date){
17 return date != null ? SHORT_DATE.format(date.toInstant().atZone(ZONE_ID).toLocalDate()) : null;
18 }
19
20 public static Date parseDatetime(String string) {
21 return string != null && !string.isEmpty() ? Date.from(LocalDateTime.parse(string, DATETIME).atZone(ZONE_ID)
22 .toInstant()) : null;
23 }
24
25 public static Date parseDate(String string) {
26 return string != null && !string.isEmpty() ? Date.from(LocalDate.parse(string, DATE).atStartOfDay()
27 .atZone(ZONE_ID).toInstant()) : null;
28 }
29
30 public static String dateAdd(int date) {
31 return DATETIME.format(LocalDate.now().plusDays(date).atStartOfDay());
32 }
33
34 public static String datetimeAdd(int date) {
35 return DATETIME.format(LocalDateTime.now().plusDays(date));
36 }
37
38 public static String datetimeAdd(String string, int date) {
39 return string != null && !string.isEmpty() ? DATETIME.format(LocalDateTime.parse(string, DATETIME).plusDays(date))
40 : null;
41 }
42 }
