1 public classMyDate {2 /**

3 * 对于年月日的天干地支4 */

5 private intyear_ganZhi;6 private intmonth_ganZhi;7 private intday_ganZhi;8 /**

9 * 关于阴历的相关信息10 */

11 private static int[] lunar_info = {0x04bd8, 0x04ae0, 0x0a570, 0x054d5,12 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2, 0x04ae0,13 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2,14 0x095b0, 0x14977, 0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40,15 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970, 0x06566, 0x0d4a0,16 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7,17 0x0c950, 0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0,18 0x092d0, 0x0d2b2, 0x0a950, 0x0b557, 0x06ca0, 0x0b550, 0x15355,19 0x04da0, 0x0a5d0, 0x14573, 0x052d0, 0x0a9a8, 0x0e950, 0x06aa0,20 0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263,21 0x0d950, 0x05b57, 0x056a0, 0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0,22 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b5a0, 0x195a6, 0x095b0,23 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46,24 0x0ab60, 0x09570, 0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50,25 0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0, 0x0c960, 0x0d954,26 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0,27 0x0cab5, 0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0,28 0x0a5b0, 0x15176, 0x052b0, 0x0a930, 0x07954, 0x06aa0, 0x0ad50,29 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530,30 0x05aa0, 0x076a3, 0x096d0, 0x04bd7, 0x04ad0, 0x0a4d0, 0x1d0b6,31 0x0d250, 0x0d520, 0x0dd45, 0x0b5a0, 0x056d0, 0x055b2, 0x049b0,32 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0};33 /**

34 * 记录天干的信息35 */

36 private String[] gan_info = {"甲", "乙", "丙", "丁", "戊", "己", "庚", "辛",37 "壬", "癸"};38 private String[] zhi_info = {"子", "丑", "寅", "卯", "辰", "巳", "午", "未",39 "申", "酉", "戌", "亥"};40 /**

41 * 单例模式42 */

43 private static volatile MyDate instance = null;44 privateMyDate() {45 }46

47 public staticMyDate getInstance() {48 if (instance == null) {49 synchronized (MyDate.class) {50 if (instance == null) {51 instance = newMyDate();52 }53 }54 }55 returninstance;56 }57

58 /**

59 * 获取农历某年的总天数60 *61 *@paramyear62 *@return

63 */

64 private int daysOfYear(intyear) {65 int sum = 348;66 for (int i = 0x8000; i > 0x8; i >>= 1) {67 sum += (lunar_info[year - 1900] & i) == 0 ? 0 : 1;68 }69 //获取闰月的天数

70 intdaysOfLeapMonth;71 if ((lunar_info[year - 1900] & 0xf) != 0) {72 daysOfLeapMonth = (lunar_info[year - 1900] & 0x10000) == 0 ? 29 : 30;73 } else{74 daysOfLeapMonth = 0;75 }76 return sum +daysOfLeapMonth;77 }78

79 /**

80 * 初始化年月日对应的天干地支81 *@paramyear82 *@parammonth83 *@paramday84 */

85 public void initGanZhi(int year, int month, intday) {86 //获取现在的时间

87 Calendar calendar_now =Calendar.getInstance();88 calendar_now.set(year, month - 1, day);89 long date_now =calendar_now.getTime().getTime();90 //获取1900-01-31的时间

91 Calendar calendar_ago =Calendar.getInstance();92 calendar_ago.set(1900, 0 ,31);93 long date_ago =calendar_ago.getTime().getTime();94 //86400000 = 24 * 60 * 60 * 1000

95 long days_distance = (date_now - date_ago) / 86400000L;96 float remainder = (date_now - date_ago) % 86400000L;97 //余数大于0算一天

98 if (remainder > 0) {99 days_distance += 1;100 }101 //都是从甲子开始算起以1900-01-31为起点102 //1899-12-21是农历1899年腊月甲子日 40：相差1900-01-31有40天

103 day_ganZhi = (int)days_distance + 40;104 //1898-10-01是农历甲子月 14：相差1900-01-31有14个月

105 month_ganZhi = 14;106 int daysOfYear = 0;107 inti;108 for (i = 1900; i < 2050 && days_distance > 0; i++) {109 daysOfYear =daysOfYear(i);110 days_distance -=daysOfYear;111 month_ganZhi += 12;112 }113 if (days_distance < 0) {114 days_distance +=daysOfYear;115 i--;116 month_ganZhi -= 12;117 }118 //农历年份

119 int myYear =i;120 //1864年是甲子年

121 year_ganZhi = myYear - 1864;122 //哪个月是闰月

123 int leap = lunar_info[myYear - 1900] & 0xf;124 boolean isLeap = false;125 int daysOfLeapMonth = 0;126 for (i = 1; i < 13 && days_distance > 0; i++) {127 //闰月

128 if (leap > 0 && i == (leap + 1) && !isLeap) {129 isLeap = true;130 if ((lunar_info[myYear - 1900] & 0xf) != 0) {131 daysOfLeapMonth = (lunar_info[myYear - 1900] & 0x10000) == 0 ? 29 : 30;132 } else{133 daysOfLeapMonth = 0;134 }135 --i;136 } else{137 daysOfLeapMonth = (lunar_info[myYear - 1900] & (0x10000 >> i)) == 0 ? 29 : 30;138 }139 //设置非闰月

140 if (isLeap && i == (leap + 1)) {141 isLeap = false;142 }143 days_distance -=daysOfLeapMonth;144 if (!isLeap) {145 month_ganZhi++;146 }147 }148 if (days_distance == 0 && leap > 0 && i == leap + 1 && !isLeap) {149 --month_ganZhi;150 }151 if (days_distance < 0) {152 --month_ganZhi;153 }154 }155

156 /**

157 * 将年月日转化为天干地支的显示方法158 *@paramindex159 *@return

160 */

161 private String ganZhi(intindex) {162 return gan_info[index % 10] + zhi_info[index % 12];163 }164

165 /**

166 * 获取天干地支167 *@return

168 */

169 publicString getGanZhi() {170 return "农历" + ganZhi(year_ganZhi) + "年 " + ganZhi(month_ganZhi) + "月 " + ganZhi(day_ganZhi) + "日";171 }172 }