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import java.text.parseexception;
import java.text.simpledateformat;
import java.util.calendar;
import java.util.date;
public class lunar {
private int year;
private int month;
private int day;
private boolean leap;
final static string chinesenumber[] = {"一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二"};
static simpledateformat chinesedateformat = new simpledateformat("yyyy年mm月dd日");
final static long[] lunarinfo = new long[]
{0x04bd8, 0x04ae0, 0x0a570, 0x054d5, 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2,
0x04ae0, 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2, 0x095b0, 0x14977,
0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970,
0x06566, 0x0d4a0, 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7, 0x0c950,
0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 0x092d0, 0x0d2b2, 0x0a950, 0x0b557,
0x06ca0, 0x0b550, 0x15355, 0x04da0, 0x0a5d0, 0x14573, 0x052d0, 0x0a9a8, 0x0e950, 0x06aa0,
0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0,
0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b5a0, 0x195a6,
0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 0x0ab60, 0x09570,
0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0,
0x0c960, 0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 0x0cab5,
0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930,
0x07954, 0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530,
0x05aa0, 0x076a3, 0x096d0, 0x04bd7, 0x04ad0, 0x0a4d0, 0x1d0b6, 0x0d250, 0x0d520, 0x0dd45,
0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0};
//====== 传回农历 y年的总天数
final private static int yeardays(int y) {
int i, sum = 348;
for (i = 0x8000; i > 0x8; i >>= 1) {
if ((lunarinfo[y – 1900] & i) != 0) sum += 1;
}
return (sum + leapdays(y));
}
//====== 传回农历 y年闰月的天数
final private static int leapdays(int y) {
if (leapmonth(y) != 0) {
if ((lunarinfo[y – 1900] & 0x10000) != 0)
return 30;
else
return 29;
} else
return 0;
}
//====== 传回农历 y年闰哪个月 1-12 , 没闰传回 0
final private static int leapmonth(int y) {
return (int) (lunarinfo[y – 1900] & 0xf);
}
//====== 传回农历 y年m月的总天数
final private static int monthdays(int y, int m) {
if ((lunarinfo[y – 1900] & (0x10000 >> m)) == 0)
return 29;
else
return 30;
}
//====== 传回农历 y年的生肖
final public string animalsyear() {
final string[] animals = new string[]{"鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪"};
return animals[(year – 4) % 12];
}
//====== 传入 月日的offset 传回干支, 0=甲子
final private static string cyclicalm(int num) {
final string[] gan = new string[]{"甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸"};
final string[] zhi = new string[]{"子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥"};
return (gan[num % 10] + zhi[num % 12]);
}
//====== 传入 offset 传回干支, 0=甲子
final public string cyclical() {
int num = year – 1900 + 36;
return (cyclicalm(num));
}
/**
* 传出y年m月d日对应的农历.
* yearcyl3:农历年与1864的相差数 ?
* moncyl4:从1900年1月31日以来,闰月数
* daycyl5:与1900年1月31日相差的天数,再加40 ?
* @param cal
* @return
*/
public lunar(calendar cal) {
int yearcyl, moncyl, daycyl;
int leapmonth = 0;
date basedate = null;
try {
basedate = chinesedateformat.parse("1900年1月31日");
} catch (parseexception e) {
e.printstacktrace(); //to change body of catch statement use options | file templates.
}
//求出和1900年1月31日相差的天数
int offset = (int) ((cal.gettime().gettime() – basedate.gettime()) / 86400000l);
daycyl = offset + 40;
moncyl = 14;
//用offset减去每农历年的天数
// 计算当天是农历第几天
//i最终结果是农历的年份
//offset是当年的第几天
int iyear, daysofyear = 0;
for (iyear = 1900; iyear < 2050 && offset > 0; iyear++) {
daysofyear = yeardays(iyear);
offset -= daysofyear;
moncyl += 12;
}
if (offset < 0) {
offset += daysofyear;
iyear–;
moncyl -= 12;
}
//农历年份
year = iyear;
yearcyl = iyear – 1864;
leapmonth = leapmonth(iyear); //闰哪个月,1-12
leap = false;
//用当年的天数offset,逐个减去每月（农历）的天数，求出当天是本月的第几天
int imonth, daysofmonth = 0;
for (imonth = 1; imonth < 13 && offset > 0; imonth++) {
//闰月
if (leapmonth > 0 && imonth == (leapmonth + 1) && !leap) {
–imonth;
leap = true;
daysofmonth = leapdays(year);
} else
daysofmonth = monthdays(year, imonth);
offset -= daysofmonth;
//解除闰月
if (leap && imonth == (leapmonth + 1)) leap = false;
if (!leap) moncyl++;
}
//offset为0时，并且刚才计算的月份是闰月，要校正
if (offset == 0 && leapmonth > 0 && imonth == leapmonth + 1) {
if (leap) {
leap = false;
} else {
leap = true;
–imonth;
–moncyl;
}
}
//offset小于0时，也要校正
if (offset < 0) {
offset += daysofmonth;
–imonth;
–moncyl;
}
month = imonth;
day = offset + 1;
}
public static string getchinadaystring(int day) {
string chineseten[] = {"初", "十", "廿", "卅"};
int n = day % 10 == 0 ? 9 : day % 10 – 1;
if (day > 30)
return "";
if (day == 10)
return "初十";
else
return chineseten[day / 10] + chinesenumber[n];
}
public string tostring() {
return year + "年" + (leap ? "闰" : "") + chinesenumber[month – 1] + "月" + getchinadaystring(day);
}
public static void main(string[] args) throws parseexception {
calendar today = calendar.getinstance();
today.settime(chinesedateformat.parse("2003年12月17日"));
lunar lunar = new lunar(today);
system.out.println("北京时间：" + chinesedateformat.format(today.gettime()) + " 农历" + lunar);
}
}
