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日期操作的工具类
1 public class DateUtil { 2 3 private String year; 4 private String month; 5 private String day; 6 7 /** 8 * 月份字符串最小值 9 */ 10 public static final String MONTH_MIN = "01"; 11 /** 12 * 月份字符串最大值 13 */ 14 public static final String MONTH_MAX = "12"; 15 16 /** 17 * 天数字符串最小值 18 */ 19 public static final String DAY_MIN = "01"; 20 /** 21 * 天数字符串最大值 22 */ 23 public static final String DAY_MAX = "31"; 24 25 public DateUtil() { 26 String dateTime = DateTime.getNowDateTime(); 27 this.year = dateTime.substring(0, 4); 28 this.month = dateTime.substring(5, 7); 29 this.day = dateTime.substring(8, 10); 30 } 31 32 public int getCurYearMin() { 33 return Integer.parseInt(this.year + MONTH_MIN + DAY_MIN); 34 } 35 36 public int getCurYearMax() { 37 return Integer.parseInt(this.year + MONTH_MAX + DAY_MAX); 38 } 39 40 public int getCurMonthMin() { 41 return Integer.parseInt(this.year + this.month + DAY_MIN); 42 } 43 44 public int getCurMonthMax() { 45 return Integer.parseInt(this.year + this.month + DAY_MAX); 46 } 47 48 public int getCurDay() { 49 return Integer.parseInt(this.year + this.month + this.day); 50 } 51 52 /** 53 * 获取本年到本月的所有月份 54 * @return new String[]{"2010-01", "2010-02", "2010-03"} 55 */ 56 public String[] months(){ 57 int m = Integer.parseInt(month); 58 String res[] =new String[m]; 59 for(int i=1; i<=m; i++){ 60 if(i<10) { 61 res[i-1] = year + "-0" + i; 62 } else { 63 res[i-1] = year + "-" + i; 64 } 65 } 66 return res; 67 68 } 69 70 /** 71 * 12个月 72 * @param year 73 * @return if null return 最近12个月, else return 年12个月 74 */ 75 public String[] months(String year){ 76 if(null == year){ 77 return months12(); 78 }return months12(Integer.parseInt(year)); 79 80 } 81 public String[] months(String begin, String end){ 82 DateFormat df = new SimpleDateFormat("yyyy-MM"); 83 ArrayList l = new ArrayList(); 84 try { 85 Date db = df.parse(begin); 86 Calendar cb = new GregorianCalendar(); 87 cb.setTime(db); 88 Date de = df.parse(end); 89 Calendar ce = new GregorianCalendar(); 90 ce.setTime(de); 91 l.add(df.format(cb.getTime())); 92 while(cb.before(ce)){ 93 cb.add(Calendar.MONTH, 1); 94 l.add(df.format(cb.getTime())); 95 } 96 } catch (ParseException e) { 97 e.printStackTrace(); 98 } 99 int m = l.size(); 100 String res[] =new String[m]; 101 for(int i=0; i<m; i++){ 102 res[i] = (String) l.get(i); 103 } 104 return res; 105 106 } 107 /** 108 * 获取当前月的开始时间 109 * @return 2011-01-01 00:00:00 110 */ 111 public String getCurrentMonthBegin(){ 112 return date(null, 0, 0, 0, 0, 0, 0); 113 } 114 115 /** 116 * 获取当前月的结束时间 117 * @return 2011-01-31 23:59:59 118 */ 119 public String getCurrentMonthEnd(){ 120 return date(null, 0, 1, 0, 0, 0, -1); 121 } 122 123 /** 124 * 获取前一个月的开始时间 125 * @return 2010-12-01 00:00:00 126 */ 127 public String getPreviousMonthBegin(){ 128 return date(null, 0, -1, 0, 0, 0, 0); 129 } 130 131 /** 132 * 获取前一个月的结束时间 133 * @return 2010-12-31 23:59:59 134 */ 135 public String getPreviousMonthEnd(){ 136 return date(null, 0, 0, 0, 0, 0, -1); 137 } 138 139 /** 140 * 获取当前季度的开始时间 141 * @return 2011-01-01 00:00:00 142 */ 143 public String getCurrentSeasonBegin() { 144 return getSeason(0); 145 } 146 147 /** 148 * 获取当前季度的结束时间 149 * @return 2011-03-31 23:59:59 150 */ 151 public String getCurrentSeasonEnd() { 152 return getSeason(1); 153 } 154 155 /** 156 * 当前季度的时间 157 * @param m 0：当前季度的开始时间 1：当前季度的结束时间 158 * @return 159 */ 160 private String getSeason(int m) { 161 DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 162 Date d = new Date(); 163 Calendar c = Calendar.getInstance(); 164 c.setTime(d); 165 int month = ((c.get(Calendar.MONTH) / 3) + m) * 3; 166 c.set(c.get(Calendar.YEAR), month, 1, 0, 0, -m); 167 return df.format(c.getTime()); 168 } 169 170 /** 171 * 获取当前年的开始时间 172 * @return 2011-01-01 00:00:00 173 */ 174 public String getCurrentYearBegin(){ 175 DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 176 Date date = new Date(); 177 Calendar c = Calendar.getInstance(); 178 c.setTime(date); 179 c.set(c.get(Calendar.YEAR), 0, 1, 0, 0, 0); 180 return df.format(c.getTime()); 181 } 182 183 /** 184 * 获取当前时间 185 * @return 2011-01-05 13:49:59 186 */ 187 public String getCurrentYearEnd(){ 188 return DateTime.getNowDateTime(); 189 } 190 191 /** 192 * 昨天的开始时间 193 * @return 2010-12-01 00:00:00 194 */ 195 public String getYesterdayBegin(){ 196 return dateday(null, 0, 0, -1, 0, 0, 0); 197 } 198 199 /** 200 * 昨天的结束时间 201 * @return 2010-12-31 23:59:59 202 */ 203 public String getYesterdayEnd(){ 204 return dateday(null, 0, 0, 0, 0, 0, -1); 205 } 206 207 /** 208 * 今天的开始时间 209 * @return 2010-12-01 00:00:00 210 */ 211 public String getTodayBegin(){ 212 return dateday(null, 0, 0, 0, 0, 0, 0); 213 } 214 215 /** 216 * 今天的结束时间 217 * @return 2010-12-31 23:59:59 218 */ 219 public String getTodayEnd(){ 220 return dateday(null, 0, 0, 1, 0, 0, -1); 221 } 222 223 /** 224 * 本周的开始时间 225 * @return 2010-12-01 00:00:00 226 */ 227 public String getWeekBegin(){ 228 DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 229 Date date = new Date(); 230 Calendar c = Calendar.getInstance(); 231 c.setTime(date); 232 c.set(c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DAY_OF_MONTH), 0, 0, 0); 233 c.add(Calendar.DAY_OF_MONTH, 1-c.get(Calendar.DAY_OF_WEEK)); 234 return df.format(c.getTime()); 235 236 } 237 238 /** 239 * 本周结束时间 240 * @return 2010-12-31 23:59:59 241 */ 242 public String getWeekEnd(){ 243 DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 244 Date date = new Date(); 245 Calendar c = Calendar.getInstance(); 246 c.setTime(date); 247 c.set(c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DAY_OF_MONTH), 0, 0, 0); 248 c.add(Calendar.DAY_OF_MONTH, 1-c.get(Calendar.DAY_OF_WEEK)); 249 c.add(Calendar.WEEK_OF_MONTH, 1); 250 c.add(Calendar.SECOND, -1); 251 return df.format(c.getTime()); 252 } 253 254 /** 255 * 某个时间的变化 256 * @param date 日期时间 257 * @param year 年 258 * @param month 月 259 * @param day 天 260 * @param hour 时 261 * @param minute 分 262 * @param second 秒 263 * @return 2011-01-01 00:00:00 or 2011-01-31 23:59:59 264 */ 265 public String date(Date date, int year, int month, int day, int hour, int minute, int second){ 266 // DateFormat df = new SimpleDateFormat("yyyyMMdd"); 267 DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 268 if(date == null){ 269 date = new Date(); 270 } 271 Calendar c = Calendar.getInstance(); 272 c.setTime(date); 273 c.set(c.get(Calendar.YEAR), c.get(Calendar.MONTH), 1, 0, 0, 0); 274 c.add(Calendar.YEAR, year); 275 c.add(Calendar.MONTH, month); 276 c.add(Calendar.DAY_OF_MONTH, day); 277 c.add(Calendar.HOUR_OF_DAY, hour); 278 c.add(Calendar.MINUTE, minute); 279 c.add(Calendar.SECOND, second); 280 return df.format(c.getTime()); 281 } 282 /** 283 * 某个时间的变化 284 * @param date 日期时间 285 * @param year 年 286 * @param month 月 287 * @param day 天 288 * @param hour 时 289 * @param minute 分 290 * @param second 秒 291 * @return 2011-01-01 00:00:00 or 2011-01-31 23:59:59 292 */ 293 private String dateday(Date date, int year, int month, int day, int hour, int minute, int second){ 294 // DateFormat df = new SimpleDateFormat("yyyyMMdd"); 295 DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 296 if(date == null){ 297 date = new Date(); 298 } 299 Calendar c = Calendar.getInstance(); 300 c.setTime(date); 301 c.set(c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DAY_OF_MONTH), 0, 0, 0); 302 c.add(Calendar.YEAR, year); 303 c.add(Calendar.MONTH, month); 304 c.add(Calendar.DAY_OF_MONTH, day); 305 c.add(Calendar.HOUR_OF_DAY, hour); 306 c.add(Calendar.MINUTE, minute); 307 c.add(Calendar.SECOND, second); 308 return df.format(c.getTime()); 309 } 310 311 /** 312 * 两个日期之间的全部日期数值数组 313 * @param begin 314 * @param end 315 * @return{2010-10-10, 2010-10-11, 2010-10-12, ,...,2011-01-11} 316 */ 317 public String[] dates(String begin ,String end){ 318 DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); 319 String[] arr = new String[]{""}; 320 try { 321 Date db = df.parse(begin); 322 Calendar cb = Calendar.getInstance(); 323 cb.setTime(db); 324 Date de = df.parse(end); 325 Calendar ce = Calendar.getInstance(); 326 ce.setTime(de); 327 long lday = (ce.getTimeInMillis() - cb.getTimeInMillis()) / (1000 * 60 * 60 * 24); 328 int lg = Long.valueOf(lday).intValue(); 329 arr = new String[lg + 1]; 330 arr[0] = df.format(cb.getTime()); 331 for(int i=0; i < lg; i++){ 332 cb.add(Calendar.DAY_OF_YEAR, 1); 333 arr[i + 1] = df.format(cb.getTime()); 334 } 335 } catch (ParseException e) { 336 e.printStackTrace(); 337 } 338 return arr; 339 340 } 341 342 /** 343 * 最近12个月 344 * @param begin 345 * @param end 346 * @return {2010-02, 2010-03, 2010-04,..,2011-01} 347 */ 348 public String[] months12(){ 349 DateFormat df = new SimpleDateFormat("yyyy-MM"); 350 String[] arr = new String[12]; 351 Date d = new Date(); 352 Calendar cb = Calendar.getInstance(); 353 cb.setTime(d); 354 cb.add(Calendar.MONTH, -12); 355 for(int i=0; i < 12; i++){ 356 cb.add(Calendar.MONTH, 1); 357 arr[i] = df.format(cb.getTime()); 358 } 359 return arr; 360 } 361 /** 362 * 某年的12个月 363 * @param begin 364 * @param end 365 * @return {2010-01, 2010-02, 2010-03, 2010-04,..,2010-12} 366 */ 367 public String[] months12(int year){ 368 DateFormat df = new SimpleDateFormat("yyyy-MM"); 369 String[] arr = new String[12]; 370 Calendar cb = Calendar.getInstance(); 371 if(year == cb.get(Calendar.YEAR)){ 372 return months(); 373 } 374 cb.set(year, -1, 1); 375 for(int i=0; i < 12; i++){ 376 cb.add(Calendar.MONTH, 1); 377 arr[i] = df.format(cb.getTime()); 378 } 379 return arr; 380 } 381 382 /** 383 * 从当前年到2008年 384 * @param begin 385 * @param end 386 * @return {2011, 2010, 2009, 2008} 387 */ 388 public String[] years(){ 389 DateFormat df = new SimpleDateFormat("yyyy"); 390 391 Date d = new Date(); 392 Calendar cb = Calendar.getInstance(); 393 int cy = cb.get(Calendar.YEAR); 394 cb.set(Calendar.YEAR, 2007); 395 cy = cy - cb.get(Calendar.YEAR); 396 cb.setTime(d); 397 cb.add(Calendar.YEAR, 1); 398 String[] arr = new String[cy]; 399 for(int i=0; i < cy; i++){ 400 cb.add(Calendar.YEAR, -1); 401 arr[i] = df.format(cb.getTime()); 402 } 403 return arr; 404 } 405 /** 406 * 获得当前的时间的前第十二个月 407 * @return 408 */ 409 public String get12thMonth(){ 410 DateFormat df = new SimpleDateFormat("yyyy-MM"); 411 Date d = new Date(); 412 GregorianCalendar cb = new GregorianCalendar(); 413 cb.setTime(d); 414 cb.add(Calendar.MONTH, -11); 415 return df.format(cb.getTime()); 416 } 417 418 /** 419 * 获得当前年月 420 * @return 421 */ 422 public String getCurrentMonth(){ 423 DateFormat df = new SimpleDateFormat("yyyy-MM"); 424 GregorianCalendar cd = new GregorianCalendar(); 425 return df.format(cd.getTime()); 426 } 427428}
public class DateUtil {
private String year;private String month;private String day;
/** * 月份字符串最小值 */public static final String MONTH_MIN = "01";/** * 月份字符串最大值 */public static final String MONTH_MAX = "12";
/** * 天数字符串最小值 */public static final String DAY_MIN = "01";/** * 天数字符串最大值 */public static final String DAY_MAX = "31";
public DateUtil() {String dateTime = DateTime.getNowDateTime();this.year = dateTime.substring(0, 4);this.month = dateTime.substring(5, 7);this.day = dateTime.substring(8, 10);}
public int getCurYearMin() {return Integer.parseInt(this.year + MONTH_MIN + DAY_MIN);}
public int getCurYearMax() {return Integer.parseInt(this.year + MONTH_MAX + DAY_MAX);}
public int getCurMonthMin() {return Integer.parseInt(this.year + this.month + DAY_MIN);}
public int getCurMonthMax() {return Integer.parseInt(this.year + this.month + DAY_MAX);}
public int getCurDay() {return Integer.parseInt(this.year + this.month + this.day);}
/** * 获取本年到本月的所有月份 * @return new String[]{"2010-01", "2010-02", "2010-03"} */public String[] months(){int m = Integer.parseInt(month);String res[] =new String[m];for(int i=1; i<=m; i++){if(i<10) {res[i-1] = year + "-0" + i;} else {res[i-1] = year + "-" + i;}}return res;
}/** * 12个月 * @param year * @return if null return 最近12个月, else return 年12个月 */public String[] months(String year){if(null == year){return months12();}return months12(Integer.parseInt(year));}public String[] months(String begin, String end){DateFormat df = new SimpleDateFormat("yyyy-MM");ArrayList l = new ArrayList();try {Date db = df.parse(begin);Calendar cb = new GregorianCalendar();cb.setTime(db);Date de = df.parse(end);Calendar ce = new GregorianCalendar();ce.setTime(de);l.add(df.format(cb.getTime()));while(cb.before(ce)){cb.add(Calendar.MONTH, 1);l.add(df.format(cb.getTime()));}} catch (ParseException e) {e.printStackTrace();}int m = l.size();String res[] =new String[m];for(int i=0; i<m; i++){res[i] = (String) l.get(i); }return res;}/** * 获取当前月的开始时间 * @return 2011-01-01 00:00:00 */public String getCurrentMonthBegin(){return date(null, 0, 0, 0, 0, 0, 0);}
/** * 获取当前月的结束时间 * @return 2011-01-31 23:59:59 */public String getCurrentMonthEnd(){return date(null, 0, 1, 0, 0, 0, -1);}/** * 获取前一个月的开始时间 * @return 2010-12-01 00:00:00 */public String getPreviousMonthBegin(){return date(null, 0, -1, 0, 0, 0, 0);}
/** * 获取前一个月的结束时间 * @return 2010-12-31 23:59:59 */public String getPreviousMonthEnd(){return date(null, 0, 0, 0, 0, 0, -1);}
/** * 获取当前季度的开始时间 * @return 2011-01-01 00:00:00 */public String getCurrentSeasonBegin() {return getSeason(0);}
/** * 获取当前季度的结束时间 * @return 2011-03-31 23:59:59 */public String getCurrentSeasonEnd() {return getSeason(1);}
/** * 当前季度的时间 * @param m 0：当前季度的开始时间 1：当前季度的结束时间 * @return */private String getSeason(int m) {DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Date d = new Date();Calendar c = Calendar.getInstance();c.setTime(d);int month = ((c.get(Calendar.MONTH) / 3) + m) * 3;c.set(c.get(Calendar.YEAR), month, 1, 0, 0, -m);return df.format(c.getTime());}/** * 获取当前年的开始时间 * @return 2011-01-01 00:00:00 */public String getCurrentYearBegin(){DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Date date = new Date();Calendar c = Calendar.getInstance();c.setTime(date);c.set(c.get(Calendar.YEAR), 0, 1, 0, 0, 0);return df.format(c.getTime());}
/** * 获取当前时间 * @return 2011-01-05 13:49:59 */public String getCurrentYearEnd(){return DateTime.getNowDateTime();}
/** * 昨天的开始时间 * @return 2010-12-01 00:00:00 */public String getYesterdayBegin(){return dateday(null, 0, 0, -1, 0, 0, 0);}
/** * 昨天的结束时间 * @return 2010-12-31 23:59:59 */public String getYesterdayEnd(){return dateday(null, 0, 0, 0, 0, 0, -1);}
/** * 今天的开始时间 * @return 2010-12-01 00:00:00 */public String getTodayBegin(){return dateday(null, 0, 0, 0, 0, 0, 0);}
/** * 今天的结束时间 * @return 2010-12-31 23:59:59 */public String getTodayEnd(){return dateday(null, 0, 0, 1, 0, 0, -1);}
/** * 本周的开始时间 * @return 2010-12-01 00:00:00 */public String getWeekBegin(){DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Date date = new Date();Calendar c = Calendar.getInstance();c.setTime(date);c.set(c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DAY_OF_MONTH), 0, 0, 0);c.add(Calendar.DAY_OF_MONTH, 1-c.get(Calendar.DAY_OF_WEEK));return df.format(c.getTime());}
/** * 本周结束时间 * @return 2010-12-31 23:59:59 */public String getWeekEnd(){DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Date date = new Date();Calendar c = Calendar.getInstance();c.setTime(date);c.set(c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DAY_OF_MONTH), 0, 0, 0);c.add(Calendar.DAY_OF_MONTH, 1-c.get(Calendar.DAY_OF_WEEK));c.add(Calendar.WEEK_OF_MONTH, 1);c.add(Calendar.SECOND, -1);return df.format(c.getTime());}
/** * 某个时间的变化 * @param date 日期时间 * @param year 年 * @param month 月 * @param day 天 * @param hour 时 * @param minute 分 * @param second 秒 * @return 2011-01-01 00:00:00 or 2011-01-31 23:59:59 */public String date(Date date, int year, int month, int day, int hour, int minute, int second){//DateFormat df = new SimpleDateFormat("yyyyMMdd");DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");if(date == null){date = new Date();}Calendar c = Calendar.getInstance();c.setTime(date);c.set(c.get(Calendar.YEAR), c.get(Calendar.MONTH), 1, 0, 0, 0);c.add(Calendar.YEAR, year);c.add(Calendar.MONTH, month);c.add(Calendar.DAY_OF_MONTH, day);c.add(Calendar.HOUR_OF_DAY, hour);c.add(Calendar.MINUTE, minute);c.add(Calendar.SECOND, second);return df.format(c.getTime());}/** * 某个时间的变化 * @param date 日期时间 * @param year 年 * @param month 月 * @param day 天 * @param hour 时 * @param minute 分 * @param second 秒 * @return 2011-01-01 00:00:00 or 2011-01-31 23:59:59 */private String dateday(Date date, int year, int month, int day, int hour, int minute, int second){//DateFormat df = new SimpleDateFormat("yyyyMMdd");DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");if(date == null){date = new Date();}Calendar c = Calendar.getInstance();c.setTime(date);c.set(c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DAY_OF_MONTH), 0, 0, 0);c.add(Calendar.YEAR, year);c.add(Calendar.MONTH, month);c.add(Calendar.DAY_OF_MONTH, day);c.add(Calendar.HOUR_OF_DAY, hour);c.add(Calendar.MINUTE, minute);c.add(Calendar.SECOND, second);return df.format(c.getTime());}/** * 两个日期之间的全部日期数值数组 * @param begin * @param end * @return{2010-10-10, 2010-10-11, 2010-10-12, ,...,2011-01-11} */public String[] dates(String begin ,String end){DateFormat df = new SimpleDateFormat("yyyy-MM-dd");String[] arr = new String[]{""};try {Date db = df.parse(begin);Calendar cb = Calendar.getInstance();cb.setTime(db);Date de = df.parse(end);Calendar ce = Calendar.getInstance();ce.setTime(de);long lday = (ce.getTimeInMillis() - cb.getTimeInMillis()) / (1000 * 60 * 60 * 24);int lg = Long.valueOf(lday).intValue();arr = new String[lg + 1];arr[0] = df.format(cb.getTime());for(int i=0; i < lg; i++){cb.add(Calendar.DAY_OF_YEAR, 1);arr[i + 1] = df.format(cb.getTime());}} catch (ParseException e) {e.printStackTrace();}return arr;}/** * 最近12个月 * @param begin * @param end * @return {2010-02, 2010-03, 2010-04,..,2011-01} */public String[] months12(){DateFormat df = new SimpleDateFormat("yyyy-MM");String[] arr = new String[12];Date d = new Date();Calendar cb = Calendar.getInstance();cb.setTime(d);cb.add(Calendar.MONTH, -12);for(int i=0; i < 12; i++){cb.add(Calendar.MONTH, 1);arr[i] = df.format(cb.getTime());}return arr;}/** * 某年的12个月 * @param begin * @param end * @return {2010-01, 2010-02, 2010-03, 2010-04,..,2010-12} */public String[] months12(int year){DateFormat df = new SimpleDateFormat("yyyy-MM");String[] arr = new String[12];Calendar cb = Calendar.getInstance();if(year == cb.get(Calendar.YEAR)){return months();}cb.set(year, -1, 1);for(int i=0; i < 12; i++){cb.add(Calendar.MONTH, 1);arr[i] = df.format(cb.getTime());}return arr;}/** * 从当前年到2008年 * @param begin * @param end * @return {2011, 2010, 2009, 2008} */public String[] years(){DateFormat df = new SimpleDateFormat("yyyy");Date d = new Date();Calendar cb = Calendar.getInstance();int cy = cb.get(Calendar.YEAR);cb.set(Calendar.YEAR, 2007);cy = cy - cb.get(Calendar.YEAR);cb.setTime(d);cb.add(Calendar.YEAR, 1);String[] arr = new String[cy];for(int i=0; i < cy; i++){cb.add(Calendar.YEAR, -1);arr[i] = df.format(cb.getTime());}return arr;}/** * 获得当前的时间的前第十二个月 * @return */public String get12thMonth(){ DateFormat df = new SimpleDateFormat("yyyy-MM");Date d = new Date();GregorianCalendar cb = new GregorianCalendar();cb.setTime(d);cb.add(Calendar.MONTH, -11);return df.format(cb.getTime());} /** * 获得当前年月 * @return */ public String getCurrentMonth(){ DateFormat df = new SimpleDateFormat("yyyy-MM");GregorianCalendar cd = new GregorianCalendar();return df.format(cd.getTime());}
/** * @param args */public static void main(String[] args) {DateUtil du = new DateUtil();if(10 > 2){System.out.println(du.getCurrentYearEnd());System.out.println(du.getWeekBegin());System.out.println(du.getWeekEnd());}else{System.out.println(du.getCurYearMin() + "~" + du.getCurYearMax());
System.out.println(du.getCurMonthMin() + "~" + du.getCurMonthMax());
System.out.println(du.getCurDay());
System.out.println(du.getPreviousMonthBegin());System.out.println(du.getPreviousMonthEnd());
System.out.println(du.getCurrentSeasonBegin());System.out.println(du.getCurrentSeasonEnd());int m = 0;int t = -3;Date d = new Date();Calendar c = Calendar.getInstance();c.setTime(d);int month = (((c.get(Calendar.MONTH) + t) / 3) + m) * 3;System.out.println(month);
String[] arr = du.dates("2010-10-10", "2011-01-11");int lg = arr.length;for(int i=0; i < lg; i++){System.out.println(arr[i]);}arr = du.months12();lg = arr.length;for(int i=0; i < lg; i++){System.out.println(arr[i]);}
arr = du.years();lg = arr.length;for(int i=0; i < lg; i++){System.out.println(arr[i]);}arr = du.months12(2011);lg = arr.length;for(int i=0; i < lg; i++){System.out.println(arr[i]);}System.out.println(" -- - -");arr = du.months("2010-10-10", "2011-01-11");lg = arr.length;for(int i=0; i < lg; i++){System.out.println(arr[i]);}
System.out.println(du.getTodayBegin());System.out.println(du.getTodayEnd());System.out.println(" -- - ");System.out.println(du.getYesterdayBegin());System.out.println(du.getYesterdayEnd());System.out.println(" -- - ");System.out.println(du.getWeekBegin());System.out.println(du.getWeekEnd());
}}}
日期操作的工具类