|  |  | 
 |  |  |     } | 
 |  |  |     public static Date getFirstThisYearDate() { | 
 |  |  |         try { | 
 |  |  |             return sdfShort.parse( getNowShortDate().substring(0, 4) + "0101"); | 
 |  |  |             return sdfLong.parse( getNowShortDate().substring(0, 4) + "-01-01"); | 
 |  |  |         } catch (Exception e) { | 
 |  |  |             return null; | 
 |  |  |         } | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     public static Date getFirstThisMonthDate() { | 
 |  |  |         try { | 
 |  |  |             return sdfLong.parse( getNowFormateDate().substring(0, 7) + "-01"); | 
 |  |  |         } catch (Exception e) { | 
 |  |  |             return null; | 
 |  |  |         } | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |  | 
 |  |  |  | 
 |  |  |     public static String getFirstDayCurrentMonth() { | 
 |  |  |         try { | 
 |  |  |             return getDateLong(new Date()).substring(0, 7) + "-01"; | 
 |  |  | 
 |  |  | //            Date date1 = getISO8601DateByStr("2024-06-14T08:46:36.014+08:00"); | 
 |  |  | //            System.out.println(DateUtil.afterMinutesDate(-5)); | 
 |  |  |  | 
 |  |  |             System.out.println(DateUtil.getFirstThisMonthDate()); | 
 |  |  |  | 
 |  |  |             System.out.println(getPlusTime2(DateUtil.addMonthToDate(new Date(),-1))); | 
 |  |  | //            System.out.println(getPlusTime2(DateUtil.addMonthToDate(new Date(),-1))); | 
 |  |  | //            System.out.println(DateUtil.getBeforMonthStr(new Date(),12)); | 
 |  |  |  | 
 |  |  | //            List<Date> list =getThisMonthDateList(); | 
 |  |  | 
 |  |  |         gc.setTime(date); | 
 |  |  |         return gc.get(2) + 1; | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     public static int getNowDayNum(){ | 
 |  |  |         // 获取Calendar实例 | 
 |  |  |         Calendar calendar = Calendar.getInstance(); | 
 |  |  |         return calendar.get(Calendar.DAY_OF_MONTH); | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |  | 
 |  |  |  | 
 |  |  | } |