java 万年历（农历和阳历的互换）

package com.java; import java.util.Calendar; public class LunarCalendar { public static void main(String[] args) { Solar s = new Solar(); s.getDate(2020, 9); String t = MutualConversion.solarToLundar(2009, 10, 12); String[] str = t.split("-"); Lunar la = new Lunar(Integer.parseInt(str[0]), Integer .parseInt(str[1]), Integer.parseInt(str[2])); System.out.println("\n\n阳历2009-10-12日对应的农历日期为："+la.toString(1)+" "+la.toWeek()); String t1 = MutualConversion.lundarToSolar(2019, 1, 1); String[] str1 = t1.split("-"); Solar s1 = new Solar(Integer.parseInt(str1[0]), Integer .parseInt(str1[1]), Integer.parseInt(str1[2])); System.out.println("\n农历2019-1-1日对应的阳历日期为："+s1.toString()+" "+s1.toWeek()); } } // 自定义日历类，其作用是实现阳历和农历日期相互转换的功能 class MutualConversion { // 阵列storeLunarMonth存储在每月一天的资料，每年从1901年到2100年的农历，农历只能是29或30天， // 每月表达12（或13）的二进制位在一年内，这是30 1中的相应位置的形式天，否则，29天 private static final int[]storeLunarMonth = { 0x4ae0,0xa570,0x5268,0xd260,0xd950,0x6aa8, 0x56a0,0x9ad0,0x4ae8,0x4ae0,//1910 0xa4d8,0xa4d0,0xd250,0xd548,0xb550,0x56a0, 0x96d0,0x95b0,0x49b8,0x49b0,//1920 0xa4b0,0xb258,0x6a50,0x6d40,0xada8, 0x2b60,0x9570,0x4978,0x4970,0x64b0, //1930 0xd4a0,0xea50,0x6d48,0x5ad0,0x2b60, 0x9370,0x92e0,0xc968,0xc950,0xd4a0, //1940 0xda50,0xb550,0x56a0,0xaad8,0x25d0, 0x92d0,0xc958,0xa950,0xb4a8,0x6ca0, //1950 0xb550,0x55a8,0x4da0,0xa5b0,0x52b8, 0x52b0,0xa950,0xe950,0x6aa0,0xad50, //1960 0xab50,0x4b60,0xa570,0xa570, 0x5260,0xe930,0xd950,0x5aa8,0x56a0,0x96d0, //1970 0x4ae8,0x4ad0,0xa4d0,0xd268,0xd250, 0xd528,0xb540,0xb6a0,0x96d0,0x95b0, //1980 0x49b0,0xa4b8,0xa4b0,0xb258,0x6a50, 0x6d40,0xada0,0xab60,0x9370,0x4978, // 1990 0x4970,0x64b0,0x6a50,0xea50,0x6b28, 0x5ac0,0xab60,0x9368,0x92e0,0xc960, //2000 0xd4a8,0xd4a0,0xda50,0x5aa8,0x56a0, 0xaad8,0x25d0,0x92d0,0xc958,0xa950, //2010 0xb4a0,0xb550,0xb550,0x55a8,0x4ba0 ,0xa5b0,0x52b8,0x52b0,0xa930,0x74a8, //2020 0x6aa0,0xad50,0x4da8,0x4b60,0x9570, 0xa4e0,0xd260,0xe930,0xd530,0x5aa0, //2030 0x6b50,0x96d0,0x4ae8,0x4ad0,0xa4d0, 0xd258,0xd250,0xd520,0xdaa0,0xb5a0, //2040 0x56d0,0x4ad8,0x49b0,0xa4b8,0xa4b0, 0xaa50,0xb528,0x6d20,0xada0,0x55b0 //2050 }; // 阵列storeLunarLeapMonth存储的是农历1901年至2050年闰月的信息，0表示该年没有闰月，每个字符元素表示的存储两年。 // 例如0x50该字符存储的是2009和2010年，0x表示八进制，5表示2009年闰5月，0表示2010没有闰月 private static final char[] storeLunarLeapMonth = { 0x00, 0x50, 0x04, 0x00, 0x20, // 1910 0x60, 0x05, 0x00, 0x20, 0x70, // 1920 0x05, 0x00, 0x40, 0x02, 0x06, // 1930 0x00, 0x50, 0x03, 0x07, 0x00, // 1940 0x60, 0x04, 0x00, 0x20, 0x70, // 1950 0x05, 0x00, 0x30, 0x80, 0x06, // 1960 0x00, 0x40, 0x03, 0x07, 0x00, // 1970 0x50, 0x04, 0x08, 0x00, 0x60, // 1980 0x04, 0x0a, 0x00, 0x60, 0x05, // 1990 0x00, 0x30, 0x80, 0x05, 0x00, // 2000 0x40, 0x02, 0x07, 0x00, 0x50, // 2010 0x04, 0x09, 0x00, 0x60, 0x04, // 2020 0x00, 0x20, 0x60, 0x05, 0x00, // 2030 0x30, 0xb0, 0x06, 0x00, 0x50, // 2040 0x02, 0x07, 0x00, 0x50, 0x03 // 2050 }; // 用矩阵存领存储从1901～2050年每一年的阳历和农历的偏移天数 private static final char[] offseOfDays = { 49, 38, 28, 46, 34, 24, 43, 32, 21, 40, // 1910 29, 48, 36, 25, 44, 34, 22, 41, 31, 50, // 1920 38, 27, 46, 35, 23, 43, 32, 22, 40, 29, // 1930 47, 36, 25, 44, 34, 23, 41, 30, 49, 38, // 1940 26, 45, 35, 24, 43, 32, 21, 40, 28, 47, // 1950 36, 26, 44, 33, 23, 42, 30, 48, 38, 27, // 1960 45, 35, 24, 43, 32, 20, 39, 29, 47, 36, // 1970 26, 45, 33, 22, 41, 30, 48, 37, 27, 46, // 1980 35, 24, 43, 32, 50, 39, 28, 47, 36, 26, // 1990 45, 34, 22, 40, 30, 49, 37, 27, 46, 35, // 2000 23, 42, 31, 21, 39, 28, 48, 37, 25, 44, // 2010 33, 23, 41, 31, 50, 39, 28, 47, 35, 24, // 2020 42, 30, 21, 40, 28, 47, 36, 25, 43, 33, // 2030 22, 41, 30, 49, 37, 26, 44, 33, 23, 42, // 2040 31, 21, 40, 29, 47, 36, 25, 44, 32, 22, // 2050 }; static boolean isLeapYearOfSolar(int year) {// 判断是否有闰年 return ((year % 4 == 0) && (year % 100 != 0) || year % 400 == 0); } // 获取阳历中每个月的天数 static int getSolarMonthOfDays(int year, int month) { if ((month == 1) || (month == 3) || (month == 5) || (month == 7) || (month == 8) || (month == 10) || (month == 12)) return 31; else if ((month == 4) || (month == 6) || (month == 9) || (month == 11)) return 30; else if (month == 2) { if (isLeapYearOfSolar(year)) return 29; else return 28; } else return 0; } // 获取新年的偏移天 static int L_getOffsetOfDays(int year, int month, int day) { int days = 0; for (int i = 1; i < month; i++) { days += getSolarMonthOfDays(year, i); } days += day - 1; return days; } static int L_getLeapMonth(int year) { char month = storeLunarLeapMonth[(year - 1901) / 2]; if (year % 2 == 0) return (month & 0x0f); else return (month & 0xf0) >> 4; } // 获取当前年月的农历月 static int L_getMonthDays(int year, int month) { int leapMonth = L_getLeapMonth(year); if ((month > 12) && (month - 12 != leapMonth) || (month < 0)) { System.out.println("输入的月份有错误"); return -1; } if (month - 12 == leapMonth) { if ((storeLunarMonth[year - 1901] & (0x8000 >> leapMonth)) == 0) return 29; else return 30; } if ((leapMonth > 0) && (month > leapMonth)) month++; if ((storeLunarMonth[year - 1901] & (0x8000 >> (month - 1))) == 0) return 29; else return 30; } // 获取当前年份的农历年 static int getLunarYear(int year) { int iYearDays = 0; int leapMonth = L_getLeapMonth(year); for (int i = 1; i < 13; i++) iYearDays += L_getMonthDays(year, i); if (leapMonth > 0) iYearDays += L_getMonthDays(year, leapMonth + 12); return iYearDays; } static int getOffsetOfDays(int year, int month, int day) { int days = 0; int leapMonth = L_getLeapMonth(year); if ((leapMonth > 0) && (leapMonth == month - 12)) { month = leapMonth; days += L_getMonthDays(year, month); } for (int i = 1; i < month; i++) { days += L_getMonthDays(year, i); if (i == leapMonth) days += L_getMonthDays(year, leapMonth + 12); } days += day - 1; return days; } // 阳历转换成农历 static String solarToLundar(int year, int month, int day) { int L_day, L_month, L_year; int days = L_getOffsetOfDays(year, month, day); int leapMonth = L_getLeapMonth(year); if (days < offseOfDays[year - 1901]) { L_year = year - 1; days = offseOfDays[year - 1901] - days; L_day = days; for (L_month = 12; days > L_getMonthDays(L_year, L_month); L_month--) { L_day = days; days -= L_getMonthDays(L_year, L_month); } if (0 == L_day) L_day = 1; else L_day = L_getMonthDays(L_year, L_month) - days + 1; } else { L_year = year; days -= offseOfDays[year - 1901]; L_day = days + 1; for (L_month = 1; days >= 0; L_month++) { L_day = days + 1; days -= L_getMonthDays(L_year, L_month); if ((leapMonth == L_month) && (days > 0)) { L_day = days; days -= L_getMonthDays(L_year, L_month + 12); if (days <= 0) { L_month += 12 + 1; break; } } } L_month--; } return "" + L_year + "-" + L_month + "-" + L_day; } // 农历转换成阳历 static String lundarToSolar(int year, int month, int day) { int S_year, S_month, S_day; int days = getOffsetOfDays(year, month, day) + offseOfDays[year - 1901]; int iYearDays = isLeapYearOfSolar(year) ? 366 : 365; if (days >= iYearDays) { S_year = year + 1; days -= iYearDays; } else { S_year = year; } S_day = days + 1; for (S_month = 1; days >= 0; S_month++) { S_day = days + 1; days -= getSolarMonthOfDays(S_ye