Java Date Tool class, Java Time Tool class, Java time format

Java Date Tool class, Java Time Tool class, Java time format

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? Copyright Sweet Potato Yiu February 4, 2017 15:03:27 Saturday

http://www.cnblogs.com/fanshuyao/

Annex Download See: Http://fanshuyao.iteye.com/blog/2355386.

Java code

2. Public static final String Date_time_pattern = "Yyyy-mm-dd HH:mm:ss";
4. Public static final String Date_pattern = "Yyyy-mm-dd";
8. /** 
10. * Date Added minus days
12. * @param date if NULL, the current time
14. * @param days plus minus
16. * @param includetime whether to include a time or seconds, true to include
18. * @return
20. * @throws ParseException
22. */
24. Public static Date dateAdd (date date, int days, boolean includetime) throws parseexception{
26. if (date = = null) {
28. Date = new Date ();
30. }
32. if (!includetime) {
34. SimpleDateFormat SDF = new SimpleDateFormat (Strutils.date_pattern);
36. Date = Sdf.parse (Sdf.format (date));
38. }
40. Calendar cal = Calendar.getinstance ();
42. Cal.settime (date);
44. Cal.add (Calendar.date, days);
46. return Cal.gettime ();
48. }
52. /**
54. * Time formatted into a string
56. * @param date Date
58. * @param pattern if empty, then YYYY-MM-DD
60. * @return
62. * @throws ParseException
64. */
66. Public static string DateFormat (date date, string pattern) throws parseexception{
68. if (Strutils.isblank (pattern)) {
70. pattern = Strutils.date_pattern;
72. }
74. SimpleDateFormat SDF = new SimpleDateFormat (pattern);
76. return Sdf.format (date);
78. }
82. /**
84. * String parsed into a time object
86. * @param datetimestring String
88. * @param pattern if empty, then YYYY-MM-DD
90. * @return
92. * @throws ParseException
94. */
96. Public static Date dateparse (string datetimestring, string pattern) throws parseexception{
98. if (Strutils.isblank (pattern)) {
100. pattern = Strutils.date_pattern;
102. }
104. SimpleDateFormat SDF = new SimpleDateFormat (pattern);
106. return Sdf.parse (datetimestring);
108. }
112. /**
114. * Format Date time as a string with only date
116. * @param dateTime Date
118. * @return
120. * @throws ParseException
122. */
124. Public static String datetimetodatestring (Date dateTime) throws parseexception{
126. String datetimestring = Strutils.dateformat (DateTime, Strutils.date_time_pattern);
128. return datetimestring.substring (0, 10);
130. }
134. /**
136. * When, minutes, and seconds are 00:00:00, the datetime is formatted as a date-only string,
138. * When, minutes and seconds are not 00:00:00, return directly
140. * @param dateTime Date
142. * @return
144. * @throws ParseException
146. */
148. Public static String Datetimetodatestringiftimeendzero (Date dateTime) throws parseexception{
150. String datetimestring = Strutils.dateformat (DateTime, Strutils.date_time_pattern);
152. if (Datetimestring.endswith ("00:00:00")) {
154. return datetimestring.substring (0, 10);
156. }else{
158. return datetimestring;
160. }
162. }
166. /**
168. * Format Date time as Date object, and Dateparse
170. * @param dateTime Date
172. * @return Date
174. * @throws ParseException
176. */
178. Public static Date datetimetodate (date DateTime) throws parseexception{
180. Calendar cal = Calendar.getinstance ();
182. Cal.settime (DateTime);
184. Cal.set (Calendar.hour_of_day, 0);
186. Cal.set (Calendar.minute, 0);
188. Cal.set (Calendar.second, 0);
190. Cal.set (Calendar.millisecond, 0);
192. return Cal.gettime ();
194. }

>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>

? Copyright Sweet Potato Yiu February 4, 2017 15:03:27 Saturday

http://www.cnblogs.com/fanshuyao/

Java Date Tool class, Java Time Tool class, Java time format