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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("

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("

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 1java基础377讲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;