一个Java时间工具类_JAVA_编程开发_程序员俱乐部

主要包含了对时间操作的一些工具方法，仅供参考吧！

源码如下：

1. package?com..util;??
2. ??
3. import?java.sql.Timestamp;??
4. import?java.text.SimpleDateFormat;??
5. import?java.util.Calendar;??
6. import?java.util.Date;??
7. ??
8. public?class?DataUtil?{??
9. ??
10. ????/**?
11. ?????*?功能:?将日期对象按照某种格式进行转换，返回转换后的字符串?
12. ?????*??
13. ?????*?@param?date?日期对象?
14. ?????*?@param?pattern?转换格式?例：yyyy-MM-dd?
15. ?????*/??
16. ????public?static?String?DateToString(Date?date,?String?pattern)?{??
17. ????????String?strDateTime?=?null;??
18. ????????SimpleDateFormat?formater?=?new?SimpleDateFormat(pattern);??
19. ????????strDateTime?=?date?==?null???null?:?formater.format(date);??
20. ????????return?strDateTime;??
21. ????}??
22. ??
23. ????/**?
24. ?????*?功能:?将传入的日期对象按照yyyy-MM-dd格式转换成字符串返回?
25. ?????*??
26. ?????*?@param?date?日期对象?
27. ?????*?@return?String?
28. ?????*/??
29. ????public?static?String?DateToString(Date?date)?{??
30. ????????String?_pattern?=?"yyyy-MM-dd";??
31. ????????return?date?==?null???null?:?DateToString(date,?_pattern);??
32. ????}??
33. ??
34. ????/**?
35. ?????*?功能:?将传入的日期对象按照yyyy-MM-dd?HH:mm:ss格式转换成字符串返回?
36. ?????*??
37. ?????*?@param?date?日期对象?
38. ?????*?@return?String?
39. ?????*/??
40. ????public?static?String?DateTimeToString(Date?date)?{??
41. ????????String?_pattern?=?"yyyy-MM-dd?HH:mm:ss";??
42. ????????return?date?==?null???null?:?DateToString(date,?_pattern);??
43. ????}??
44. ??
45. ????/**?
46. ?????*?功能:?将插入的字符串按格式转换成对应的日期对象?
47. ?????*??
48. ?????*?@param?str?字符串?
49. ?????*?@param?pattern?格式?
50. ?????*?@return?Date?
51. ?????*/??
52. ????public?static?Date?StringToDate(String?str,?String?pattern)?{??
53. ????????Date?dateTime?=?null;??
54. ????????try?{??
55. ????????????if?(str?!=?null?&&?!str.equals(""))?{??
56. ????????????????SimpleDateFormat?formater?=?new?SimpleDateFormat(pattern);??
57. ????????????????dateTime?=?formater.parse(str);??
58. ????????????}??
59. ????????}?catch?(Exception?ex)?{??
60. ????????}??
61. ????????return?dateTime;??
62. ????}??
63. ??
64. ????/**?
65. ?????*?功能:?将传入的字符串按yyyy-MM-dd格式转换成对应的日期对象?
66. ?????*??
67. ?????*?@param?str?需要转换的字符串?
68. ?????*?@return?Date?返回值?
69. ?????*/??
70. ????public?static?Date?StringToDate(String?str)?{??
71. ????????String?_pattern?=?"yyyy-MM-dd";??
72. ????????return?StringToDate(str,?_pattern);??
73. ????}??
74. ??
75. ????/**?
76. ?????*?功能:?将传入的字符串按yyyy-MM-dd?HH:mm:ss格式转换成对应的日期对象?
77. ?????*??
78. ?????*?@param?str?需要转换的字符串?
79. ?????*?@return?Date?
80. ?????*/??
81. ????public?static?Date?StringToDateTime(String?str)?{??
82. ????????String?_pattern?=?"yyyy-MM-dd?HH:mm:ss";??
83. ????????return?StringToDate(str,?_pattern);??
84. ????}??
85. ??
86. ????/**?
87. ?????*?功能:?将传入的字符串转换成对应的Timestamp对象?
88. ?????*??
89. ?????*?@param?str?待转换的字符串?
90. ?????*?@return?Timestamp?转换之后的对象?
91. ?????*?@throws?Exception?
92. ?????*?????????????Timestamp?
93. ?????*/??
94. ????public?static?Timestamp?StringToDateHMS(String?str)?throws?Exception?{??
95. ????????Timestamp?time?=?null;??
96. ????????time?=?Timestamp.valueOf(str);??
97. ????????return?time;??
98. ????}??
99. ??
100. ????/**?
101. ?????*?功能:?根据传入的年月日返回相应的日期对象?
102. ?????*??
103. ?????*?@param?year?年份?
104. ?????*?@param?month?月份?
105. ?????*?@param?day?天?
106. ?????*?@return?Date?日期对象?
107. ?????*/??
108. ????public?static?Date?YmdToDate(int?year,?int?month,?int?day)?{??
109. ????????Calendar?calendar?=?Calendar.getInstance();??
110. ????????calendar.set(year,?month,?day);??
111. ????????return?calendar.getTime();??
112. ????}??
113. ??
114. ????/**?
115. ?????*?功能:?将日期对象按照MM/dd?HH:mm:ss的格式进行转换，返回转换后的字符串?
116. ?????*??
117. ?????*?@param?date?日期对象?
118. ?????*?@return?String?返回值?
119. ?????*/??
120. ????public?static?String?communityDateToString(Date?date)?{??
121. ????????SimpleDateFormat?formater?=?new?SimpleDateFormat("MM/dd?HH:mm:ss");??
122. ????????String?strDateTime?=?date?==?null???null?:?formater.format(date);??
123. ????????return?strDateTime;??
124. ????}??
125. ??
126. ????public?static?Date?getMaxDateOfDay(Date?date)?{??
127. ????????if?(date?==?null)?{??
128. ????????????return?null;??
129. ????????}?else?{??
130. ????????????Calendar?calendar?=?Calendar.getInstance();??
131. ????????????calendar.setTime(date);??
132. ????????????calendar.set(11,?calendar.getActualMaximum(11));??
133. ????????????calendar.set(12,?calendar.getActualMaximum(12));??
134. ????????????calendar.set(13,?calendar.getActualMaximum(13));??
135. ????????????calendar.set(14,?calendar.getActualMaximum(14));??
136. ????????????return?calendar.getTime();??
137. ????????}??
138. ????}??
139. ??
140. ????public?static?Date?getMinDateOfDay(Date?date)?{??
141. ????????if?(date?==?null)?{??
142. ????????????return?null;??
143. ????????}?else?{??
144. ????????????Calendar?calendar?=?Calendar.getInstance();??
145. ????????????calendar.setTime(date);??
146. ????????????calendar.set(11,?calendar.getActualMinimum(11));??
147. ????????????calendar.set(12,?calendar.getActualMinimum(12));??
148. ????????????calendar.set(13,?calendar.getActualMinimum(13));??
149. ????????????calendar.set(14,?calendar.getActualMinimum(14));??
150. ????????????return?calendar.getTime();??
151. ????????}??
152. ????}??
153. ??
154. ????/**?
155. ?????*?功能：返回传入日期对象（date）之后afterDays天数的日期对象?
156. ?????*??
157. ?????*?@param?date?日期对象?
158. ?????*?@param?afterDays?往后天数?
159. ?????*?@return?java.util.Date?返回值?
160. ?????*/??
161. ????public?static?Date?getAfterDay(Date?date,?int?afterDays)?{??
162. ????????Calendar?cal?=?Calendar.getInstance();??
163. ????????cal.setTime(date);??
164. ????????cal.add(Calendar.DATE,?1);??
165. ????????return?cal.getTime();??
166. ????}??
167. ??
168. ????//?day??
169. ????/**?
170. ?????*?功能:?返回date1与date2相差的天数?
171. ?????*??
172. ?????*?@param?date1?
173. ?????*?@param?date2?
174. ?????*?@return?int?
175. ?????*/??
176. ????public?static?int?DateDiff(Date?date1,?Date?date2)?{??
177. ????????int?i?=?(int)?((date1.getTime()?-?date2.getTime())?/?3600?/?24?/?1000);??
178. ????????return?i;??
179. ????}??
180. ??
181. ????//?min??
182. ????/**?
183. ?????*?功能:?返回date1与date2相差的分钟数?
184. ?????*??
185. ?????*?@param?date1?
186. ?????*?@param?date2?
187. ?????*?@return?int?
188. ?????*/??
189. ????public?static?int?MinDiff(Date?date1,?Date?date2)?{??
190. ????????int?i?=?(int)?((date1.getTime()?-?date2.getTime())?/?1000?/?60);??
191. ????????return?i;??
192. ????}??
193. ??
194. ????//?second??
195. ????/**?
196. ?????*?功能:?返回date1与date2相差的秒数?
197. ?????*??
198. ?????*?@param?date1?
199. ?????*?@param?date2?
200. ?????*?@return?int?
201. ?????*/??
202. ????public?static?int?TimeDiff(Date?date1,?Date?date2)?{??
203. ????????int?i?=?(int)?((date1.getTime()?-?date2.getTime()));??
204. ????????return?i;??
205. ????}??
206. ??
207. }??

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