中国农历算法java实现
* ChineseCalendarGB.java * Version 1.0.0 * Created on 2022年5月13日 * Copyright ReYo.Cn */ package reyo.sdk.utils.rili; /** * <B>创 建 人:</B>Administrator <BR> * <B>创建时间:</B>2022年5月13日 上午7:03:16<BR> * * @author ReYo * @version 1.0 */ public class ChineseCalendarGB { private int gregorianYear; private int gregorianMonth; private int gregorianDate; private boolean isGregorianLeap; private int dayOfYear; private int dayOfWeek; // 周日一星期的第一天 private int chineseYear; private int chineseMonth; // 负数表示闰月 private int chineseDate; private int sectionalTerm; private int principleTerm; private static char[] daysInGregorianMonth = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; private static String[] stemNames = { "甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸" }; private static String[] branchNames = { "子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥" }; private static String[] animalNames = { "鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪" }; public static void main(String[] arg) { ChineseCalendarGB c = new ChineseCalendarGB(); String cmd = "day"; int y = 2022; int m = 5; int d = 13; if (arg.length > 0) cmd = arg[0]; if (arg.length > 1) y = Integer.parseInt(arg[1]); if (arg.length > 2) m = Integer.parseInt(arg[2]); if (arg.length > 3) d = Integer.parseInt(arg[3]); c.setGregorian(y, m, d); c.computeChineseFields(); c.computeSolarTerms(); if (cmd.equalsIgnoreCase("year")) { String[] t = c.getYearTable(); for (int i = 0; i < t.length; i++) System.out.println(t[i]); } else if (cmd.equalsIgnoreCase("month")) { String[] t = c.getMonthTable(); for (int i = 0; i < t.length; i++) System.out.println(t[i]); } else { System.out.println("===>" + c.toString()); } } public ChineseCalendarGB() { setGregorian(1901, 1, 1); } public void setGregorian(int y, int m, int d) { gregorianYear = y; gregorianMonth = m; gregorianDate = d; isGregorianLeap = isGregorianLeapYear(y); dayOfYear = dayOfYear(y, m, d); dayOfWeek = dayOfWeek(y, m, d); chineseYear = 0; chineseMonth = 0; chineseDate = 0; sectionalTerm = 0; principleTerm = 0; } public static boolean isGregorianLeapYear(int year) { boolean isLeap = false; if (year % 4 == 0) isLeap = true; if (year % 100 == 0) isLeap = false; if (year % 400 == 0) isLeap = true; return isLeap; } public static int daysInGregorianMonth(int y, int m) { int d = daysInGregorianMonth[m - 1]; if (m == 2 && isGregorianLeapYear(y)) d++; // 公历闰年二月多一天 return d; } public static int dayOfYear(int y, int m, int d) { int c = 0; for (int i = 1; i < m; i++) { c = c + daysInGregorianMonth(y, i); } c = c + d; return c; } public static int dayOfWeek(int y, int m, int d) { int w = 1; // 公历一年一月一日是星期一,所以起始值为星期日 y = (y - 1) % 400 + 1; // 公历星期值分部 400 年循环一次 int ly = (y - 1) / 4; // 闰年次数 ly = ly - (y - 1) / 100; ly = ly + (y - 1) / 400; int ry = y - 1 - ly; // 常年次数 w = w + ry; // 常年星期值增一 w = w + 2 * ly; // 闰年星期值增二 w = w + dayOfYear(y, m, d); w = (w - 1) % 7 + 1; return w; } private static char[] chineseMonths = { // 农历月份大小压缩表,两个字节表示一年。两个字节共十六个二进制位数, // 前四个位数表示闰月月份,后十二个位数表示十二个农历月份的大小。 0x00, 0x04, 0xad, 0x08, 0x5a, 0x01, 0xd5, 0x54, 0xb4, 0x09, 0x64, 0x05, 0x59, 0x45, 0x95, 0x0a, 0xa6, 0x04, 0x55, 0x24, 0xad, 0x08, 0x5a, 0x62, 0xda, 0x04, 0xb4, 0x05, 0xb4, 0x55, 0x52, 0x0d, 0x94, 0x0a, 0x4a, 0x2a, 0x56, 0x02, 0x6d, 0x71, 0x6d, 0x01, 0xda, 0x02, 0xd2, 0x52, 0xa9, 0x05, 0x49, 0x0d, 0x2a, 0x45, 0x2b, 0x09, 0x56, 0x01, 0xb5, 0x20, 0x6d, 0x01, 0x59, 0x69, 0xd4, 0x0a, 0xa8, 0x05, 0xa9, 0x56, 0xa5, 0x04, 0x2b, 0x09, 0x9e, 0x38, 0xb6, 0x08, 0xec, 0x74, 0x6c, 0x05, 0xd4, 0x0a, 0xe4, 0x6a, 0x52, 0x05, 0x95, 0x0a, 0x5a, 0x42, 0x5b, 0x04, 0xb6, 0x04, 0xb4, 0x22, 0x6a, 0x05, 0x52, 0x75, 0xc9, 0x0a, 0x52, 0x05, 0x35, 0x55, 0x4d, 0x0a, 0x5a, 0x02, 0x5d, 0x31, 0xb5, 0x02, 0x6a, 0x8a, 0x68, 0x05, 0xa9, 0x0a, 0x8a, 0x6a, 0x2a, 0x05, 0x2d, 0x09, 0xaa, 0x48, 0x5a, 0x01, 0xb5, 0x09, 0xb0, 0x39, 0x64, 0x05, 0x25, 0x75, 0x95, 0x0a, 0x96, 0x04, 0x4d, 0x54, 0xad, 0x04, 0xda, 0x04, 0xd4, 0x44, 0xb4, 0x05, 0x54, 0x85, 0x52, 0x0d, 0x92, 0x0a, 0x56, 0x6a, 0x56, 0x02, 0x6d, 0x02, 0x6a, 0x41, 0xda, 0x02, 0xb2, 0xa1, 0xa9, 0x05, 0x49, 0x0d, 0x0a, 0x6d, 0x2a, 0x09, 0x56, 0x01, 0xad, 0x50, 0x6d, 0x01, 0xd9, 0x02, 0xd1, 0x3a, 0xa8, 0x05, 0x29, 0x85, 0xa5, 0x0c, 0x2a, 0x09, 0x96, 0x54, 0xb6, 0x08, 0x6c, 0x09, 0x64, 0x45, 0xd4, 0x0a, 0xa4, 0x05, 0x51, 0x25, 0x95, 0x0a, 0x2a, 0x72, 0x5b, 0x04, 0xb6, 0x04, 0xac, 0x52, 0x6a, 0x05, 0xd2, 0x0a, 0xa2, 0x4a, 0x4a, 0x05, 0x55, 0x94, 0x2d, 0x0a, 0x5a, 0x02, 0x75, 0x61, 0xb5, 0x02, 0x6a, 0x03, 0x61, 0x45, 0xa9, 0x0a, 0x4a, 0x05, 0x25, 0x25, 0x2d, 0x09, 0x9a, 0x68, 0xda, 0x08, 0xb4, 0x09, 0xa8, 0x59, 0x54, 0x03, 0xa5, 0x0a, 0x91, 0x3a, 0x96, 0x04, 0xad, 0xb0, 0xad, 0x04, 0xda, 0x04, 0xf4, 0x62, 0xb4, 0x05, 0x54, 0x0b, 0x44, 0x5d, 0x52, 0x0a, 0x95, 0x04, 0x55, 0x22, 0x6d, 0x02, 0x5a, 0x71, 0xda, 0x02, 0xaa, 0x05, 0xb2, 0x55, 0x49, 0x0b, 0x4a, 0x0a, 0x2d, 0x39, 0x36, 0x01, 0x6d, 0x80, 0x6d, 0x01, 0xd9, 0x02, 0xe9, 0x6a, 0xa8, 0x05, 0x29, 0x0b, 0x9a, 0x4c, 0xaa, 0x08, 0xb6, 0x08, 0xb4, 0x38, 0x6c, 0x09, 0x54, 0x75, 0xd4, 0x0a, 0xa4, 0x05, 0x45, 0x55, 0x95, 0x0a, 0x9a, 0x04, 0x55, 0x44, 0xb5, 0x04, 0x6a, 0x82, 0x6a, 0x05, 0xd2, 0x0a, 0x92, 0x6a, 0x4a, 0x05, 0x55, 0x0a, 0x2a, 0x4a, 0x5a, 0x02, 0xb5, 0x02, 0xb2, 0x31, 0x69, 0x03, 0x31, 0x73, 0xa9, 0x0a, 0x4a, 0x05, 0x2d, 0x55, 0x2d, 0x09, 0x5a, 0x01, 0xd5, 0x48, 0xb4, 0x09, 0x68, 0x89, 0x54, 0x0b, 0xa4, 0x0a, 0xa5, 0x6a, 0x95, 0x04, 0xad, 0x08, 0x6a, 0x44, 0xda, 0x04, 0x74, 0x05, 0xb0, 0x25, 0x54, 0x03 }; // 初始日,公历农历对应日期: // 公历 1901 年 1 月 1 日,对应农历 4598 年 11 月 11 日 private static int baseYear = 1901; private static int baseMonth = 1; private static int baseDate = 1; private static int baseIndex = 0; private static int baseChineseYear = 4598 - 1; private static int baseChineseMonth = 11; private static int baseChineseDate = 11; public int computeChineseFields() { if (gregorianYear < 1901 || gregorianYear > 2100) return 1; int startYear = baseYear; int startMonth = baseMonth; int startDate = baseDate; chineseYear = baseChineseYear; chineseMonth = baseChineseMonth; chineseDate = baseChineseDate; // 第二个对应日,用以提高计算效率 // 公历 2000 年 1 月 1 日,对应农历 4697 年 11 月 25 日 if (gregorianYear >= 2000) { startYear = baseYear + 99; startMonth = 1; startDate = 1; chineseYear = baseChineseYear + 99; chineseMonth = 11; chineseDate = 25; } int daysDiff = 0; for (int i = startYear; i < gregorianYear; i++) { daysDiff += 365; if (isGregorianLeapYear(i)) daysDiff += 1; // leap year } for (int i = startMonth; i < gregorianMonth; i++) { daysDiff += daysInGregorianMonth(gregorianYear, i); } daysDiff += gregorianDate - startDate; chineseDate += daysDiff; int lastDate = daysInChineseMonth(chineseYear, chineseMonth); int nextMonth = nextChineseMonth(chineseYear, chineseMonth); while (chineseDate > lastDate) { if (Math.abs(nextMonth) < Math.abs(chineseMonth)) chineseYear++; chineseMonth = nextMonth; chineseDate -= lastDate; lastDate = daysInChineseMonth(chineseYear, chineseMonth); nextMonth = nextChineseMonth(chineseYear, chineseMonth); } return 0; } private static int[] bigLeapMonthYears = { // 大闰月的闰年年份 6, 14, 19, 25, 33, 36, 38, 41, 44, 52, 55, 79, 117, 136, 147, 150, 155, 158, 185, 193 }; public static int daysInChineseMonth(int y, int m) { // 注意:闰月 m < 0 int index = y - baseChineseYear + baseIndex; int v = 0; int l = 0; int d = 30; if (1 <= m && m <= 8) { v = chineseMonths[2 * index]; l = m - 1; if (((v >> l) & 0x01) == 1) d = 29; } else if (9 <= m && m <= 12) { v = chineseMonths[2 * index + 1]; l = m - 9; if (((v >> l) & 0x01) == 1) d = 29; } else { v = chineseMonths[2 * index + 1]; v = (v >> 4) & 0x0F; if (v != Math.abs(m)) { d = 0; } else { d = 29; for (int i = 0; i < bigLeapMonthYears.length; i++) { if (bigLeapMonthYears[i] == index) { d = 30; break; } } } } return d; } public static int nextChineseMonth(int y, int m) { int n = Math.abs(m) + 1; if (m > 0) { int index = y - baseChineseYear + baseIndex; int v = chineseMonths[2 * index + 1]; v = (v >> 4) & 0x0F; if (v == m) n = -m; } if (n == 13) n = 1; return n; } private static char[][] sectionalTermMap = { { 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 6, 6, 6, 5, 5, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 5, 5 }, { 5, 4, 5, 5, 5, 4, 4, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 4, 4, 4, 3, 3, 4, 4, 3, 3, 3 }, { 6, 6, 6, 7, 6, 6, 6, 6, 5, 6, 6, 6, 5, 5, 6, 6, 5, 5, 5, 6, 5, 5, 5, 5, 4, 5, 5, 5, 5 }, { 5, 5, 6, 6, 5, 5, 5, 6, 5, 5, 5, 5, 4, 5, 5, 5, 4, 4, 5, 5, 4, 4, 4, 5, 4, 4, 4, 4, 5 }, { 6, 6, 6, 7, 6, 6, 6, 6, 5, 6, 6, 6, 5, 5, 6, 6, 5, 5, 5, 6, 5, 5, 5, 5, 4, 5, 5, 5, 5 }, { 6, 6, 7, 7, 6, 6, 6, 7, 6, 6, 6, 6, 5, 6, 6, 6, 5, 5, 6, 6, 5, 5, 5, 6, 5, 5, 5, 5, 4, 5, 5, 5, 5 }, { 7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7, 6, 7, 7, 7, 6, 6, 7, 7, 6, 6, 6, 7, 7 }, { 8, 8, 8, 9, 8, 8, 8, 8, 7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7, 6, 7, 7, 7, 6, 6, 7, 7, 7 }, { 8, 8, 8, 9, 8, 8, 8, 8, 7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7, 6, 7, 7, 7, 7 }, { 9, 9, 9, 9, 8, 9, 9, 9, 8, 8, 9, 9, 8, 8, 8, 9, 8, 8, 8, 8, 7, 8, 8, 8, 7, 7, 8, 8, 8 }, { 8, 8, 8, 8, 7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7, 6, 7, 7, 7, 6, 6, 7, 7, 7 }, { 7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7, 6, 7, 7, 7, 6, 6, 7, 7, 6, 6, 6, 7, 7 } }; private static char[][] sectionalTermYear = { { 13, 49, 85, 117, 149, 185, 201, 250, 250 }, { 13, 45, 81, 117, 149, 185, 201, 250, 250 }, { 13, 48, 84, 112, 148, 184, 200, 201, 250 }, { 13, 45, 76, 108, 140, 172, 200, 201, 250 }, { 13, 44, 72, 104, 132, 168, 200, 201, 250 }, { 5, 33, 68, 96, 124, 152, 188, 200, 201 }, { 29, 57, 85, 120, 148, 176, 200, 201, 250 }, { 13, 48, 76, 104, 132, 168, 196, 200, 201 }, { 25, 60, 88, 120, 148, 184, 200, 201, 250 }, { 16, 44, 76, 108, 144, 172, 200, 201, 250 }, { 28, 60, 92, 124, 160, 192, 200, 201, 250 }, { 17, 53, 85, 124, 156, 188, 200, 201, 250 } }; private static char[][] principleTermMap = { { 21, 21, 21, 21, 21, 20, 21, 21, 21, 20, 20, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 19, 20, 20, 20, 19, 19, 20 }, { 20, 19, 19, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 18, 19, 19, 19, 18, 18, 19, 19, 18, 18, 18, 18, 18, 18, 18 }, { 21, 21, 21, 22, 21, 21, 21, 21, 20, 21, 21, 21, 20, 20, 21, 21, 20, 20, 20, 21, 20, 20, 20, 20, 19, 20, 20, 20, 20 }, { 20, 21, 21, 21, 20, 20, 21, 21, 20, 20, 20, 21, 20, 20, 20, 20, 19, 20, 20, 20, 19, 19, 20, 20, 19, 19, 19, 20, 20 }, { 21, 22, 22, 22, 21, 21, 22, 22, 21, 21, 21, 22, 21, 21, 21, 21, 20, 21, 21, 21, 20, 20, 21, 21, 20, 20, 20, 21, 21 }, { 22, 22, 22, 22, 21, 22, 22, 22, 21, 21, 22, 22, 21, 21, 21, 22, 21, 21, 21, 21, 20, 21, 21, 21, 20, 20, 21, 21, 21 }, { 23, 23, 24, 24, 23, 23, 23, 24, 23, 23, 23, 23, 22, 23, 23, 23, 22, 22, 23, 23, 22, 22, 22, 23, 22, 22, 22, 22, 23 }, { 23, 24, 24, 24, 23, 23, 24, 24, 23, 23, 23, 24, 23, 23, 23, 23, 22, 23, 23, 23, 22, 22, 23, 23, 22, 22, 22, 23, 23 }, { 23, 24, 24, 24, 23, 23, 24, 24, 23, 23, 23, 24, 23, 23, 23, 23, 22, 23, 23, 23, 22, 22, 23, 23, 22, 22, 22, 23, 23 }, { 24, 24, 24, 24, 23, 24, 24, 24, 23, 23, 24, 24, 23, 23, 23, 24, 23, 23, 23, 23, 22, 23, 23, 23, 22, 22, 23, 23, 23 }, { 23, 23, 23, 23, 22, 23, 23, 23, 22, 22, 23, 23, 22, 22, 22, 23, 22, 22, 22, 22, 21, 22, 22, 22, 21, 21, 22, 22, 22 }, { 22, 22, 23, 23, 22, 22, 22, 23, 22, 22, 22, 22, 21, 22, 22, 22, 21, 21, 22, 22, 21, 21, 21, 22, 21, 21, 21, 21, 22 } }; private static char[][] principleTermYear = { { 13, 45, 81, 113, 149, 185, 201 }, { 21, 57, 93, 125, 161, 193, 201 }, { 21, 56, 88, 120, 152, 188, 200, 201 }, { 21, 49, 81, 116, 144, 176, 200, 201 }, { 17, 49, 77, 112, 140, 168, 200, 201 }, { 28, 60, 88, 116, 148, 180, 200, 201 }, { 25, 53, 84, 112, 144, 172, 200, 201 }, { 29, 57, 89, 120, 148, 180, 200, 201 }, { 17, 45, 73, 108, 140, 168, 200, 201 }, { 28, 60, 92, 124, 160, 192, 200, 201 }, { 16, 44, 80, 112, 148, 180, 200, 201 }, { 17, 53, 88, 120, 156, 188, 200, 201 } }; public int computeSolarTerms() { if (gregorianYear < 1901 || gregorianYear > 2100) return 1; sectionalTerm = sectionalTerm(gregorianYear, gregorianMonth); principleTerm = principleTerm(gregorianYear, gregorianMonth); return 0; } public static int sectionalTerm(int y, int m) { if (y < 1901 || y > 2100) return 0; int index = 0; int ry = y - baseYear + 1; while (ry >= sectionalTermYear[m - 1][index]) index++; int term = sectionalTermMap[m - 1][4 * index + ry % 4]; if ((ry == 121) && (m == 4)) term = 5; if ((ry == 132) && (m == 4)) term = 5; if ((ry == 194) && (m == 6)) term = 6; return term; } public static int principleTerm(int y, int m) { if (y < 1901 || y > 2100) return 0; int index = 0; int ry = y - baseYear + 1; while (ry >= principleTermYear[m - 1][index]) index++; int term = principleTermMap[m - 1][4 * index + ry % 4]; if ((ry == 171) && (m == 3)) term = 21; if ((ry == 181) && (m == 5)) term = 21; return term; } @Override public String toString() { StringBuffer buf = new StringBuffer(); buf.append("Gregorian Year: " + gregorianYear + "/n"); buf.append("Gregorian Month: " + gregorianMonth + "/n"); buf.append("Gregorian Date: " + gregorianDate + "/n"); buf.append("Is Leap Year: " + isGregorianLeap + "/n"); buf.append("Day of Year: " + dayOfYear + "/n"); buf.append("Day of Week: " + dayOfWeek + "/n"); buf.append("Chinese Year: " + chineseYear + "/n"); buf.append("Heavenly Stem: " + ((chineseYear - 1) % 10) + "/n"); buf.append("Earthly Branch: " + ((chineseYear - 1) % 12) + "/n"); buf.append("Chinese Month: " + chineseMonth + "/n"); buf.append("Chinese Date: " + chineseDate + "/n"); buf.append("Sectional Term: " + sectionalTerm + "/r"); buf.append("Principle Term: " + principleTerm + "/n"); return buf.toString(); } public String[] getYearTable() { setGregorian(gregorianYear, 1, 1); computeChineseFields(); computeSolarTerms(); String[] table = new String[58]; // 6*9 + 4 table[0] = getTextLine(27, "公历年历:" + gregorianYear); table[1] = getTextLine(27, "农历年历:" + (chineseYear + 1) + " (" + stemNames[(chineseYear + 1 - 1) % 10] + branchNames[(chineseYear + 1 - 1) % 12] + " - " + animalNames[(chineseYear + 1 - 1) % 12] + "年)"); int ln = 2; String blank = " " + " " + " "; String[] mLeft = null; String[] mRight = null; for (int i = 1; i <= 6; i++) { table[ln] = blank; ln++; mLeft = getMonthTable(); mRight = getMonthTable(); for (int j = 0; j < mLeft.length; j++) { String line = mLeft[j] + " " + mRight[j]; table[ln] = line; ln++; } } table[ln] = blank; ln++; table[ln] = getTextLine(0, "##/## - 公历日期/农历日期,(*)#月 - (闰)农历月第一天"); ln++; return table; } public static String getTextLine(int s, String t) { String str = " " + " " + " "; if (t != null && s < str.length() && s + t.length() < str.length()) str = str.substring(0, s) + t + str.substring(s + t.length()); return str; } private static String[] monthNames = { "一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二" }; public String[] getMonthTable() { setGregorian(gregorianYear, gregorianMonth, 1); computeChineseFields(); computeSolarTerms(); String[] table = new String[8]; String title = null; if (gregorianMonth < 11) title = " "; else title = " "; title = title + monthNames[gregorianMonth - 1] + "月" + " "; String header = " 日 一 二 三 四 五 六 "; String blank = " "; table[0] = title; table[1] = header; int wk = 2; String line = ""; for (int i = 1; i < dayOfWeek; i++) { line += " " + ' '; } int days = daysInGregorianMonth(gregorianYear, gregorianMonth); for (int i = gregorianDate; i <= days; i++) { line += getDateString() + ' '; rollUpOneDay(); if (dayOfWeek == 1) { table[wk] = line; line = ""; wk++; } } for (int i = dayOfWeek; i <= 7; i++) { line += " " + ' '; } table[wk] = line; for (int i = wk + 1; i < table.length; i++) { table[i] = blank; } for (int i = 0; i < table.length; i++) { table[i] = table[i].substring(0, table[i].length() - 1); } return table; } private static String[] chineseMonthNames = { "正", "二", "三", "四", "五", "六", "七", "八", "九", "十", "冬", "腊" }; private static String[] principleTermNames = { "雨水", "春分", "谷雨", "夏满", "夏至", "大暑", "处暑", "秋分", "霜降", "小雪", "冬至", "大寒" }; private static String[] sectionalTermNames = { "立春", "惊蛰", "清明", "立夏", "芒种", "小暑", "立秋", "白露", "寒露", "立冬", "大雪", "小寒" }; public String getDateString() { String str = "* / "; String gm = String.valueOf(gregorianMonth); if (gm.length() == 1) gm = ' ' + gm; String cm = String.valueOf(Math.abs(chineseMonth)); if (cm.length() == 1) cm = ' ' + cm; String gd = String.valueOf(gregorianDate); if (gd.length() == 1) gd = ' ' + gd; String cd = String.valueOf(chineseDate); if (cd.length() == 1) cd = ' ' + cd; if (gregorianDate == sectionalTerm) { str = " " + sectionalTermNames[gregorianMonth - 1]; } else if (gregorianDate == principleTerm) { str = " " + principleTermNames[gregorianMonth - 1]; } else if (chineseDate == 1 && chineseMonth > 0) { str = " " + chineseMonthNames[chineseMonth - 1] + "月"; } else if (chineseDate == 1 && chineseMonth < 0) { str = "*" + chineseMonthNames[-chineseMonth - 1] + "月"; } else { str = gd + '/' + cd; } return str; } public int rollUpOneDay() { dayOfWeek = dayOfWeek % 7 + 1; dayOfYear++; gregorianDate++; int days = daysInGregorianMonth(gregorianYear, gregorianMonth); if (gregorianDate > days) { gregorianDate = 1; gregorianMonth++; if (gregorianMonth > 12) { gregorianMonth = 1; gregorianYear++; dayOfYear = 1; isGregorianLeap = isGregorianLeapYear(gregorianYear); } sectionalTerm = sectionalTerm(gregorianYear, gregorianMonth); principleTerm = principleTerm(gregorianYear, gregorianMonth); } chineseDate++; days = daysInChineseMonth(chineseYear, chineseMonth); if (chineseDate > days) { chineseDate = 1; chineseMonth = nextChineseMonth(chineseYear, chineseMonth); if (chineseMonth == 1) chineseYear++; } return 0; } }