中国年历算法和程式-Java基础-Java-编程开发

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中国年历算法和程式

本文摘自“和荣笔记 - 中国农历二百年算法及年历”

中国公历算法

中国公历算法不是太难，关键是星期值的确定。这里给出了简单算法：

 

  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)@0   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; }
 

中国农历算法

根公历相比，中国农历的算法相当复杂。我在网上找的算法之中，eleworld.com 的算法是最好的一个。这个算法使用了大量的数据来确定农历月份和节气的分部，它仅实用于公历 1901 年到 2100 年之间的 200 年。

中国农历计算程式

跟据 eleworld.com 提供的算法，我写了下面这个程式：

[HTML]

/**
 * ChineseCalendarGB.java
 * Copyright (c) 1997-2002 by Dr. Herong Yang. http://www.herongyang.com/
 * 中国农历算法 - 实用于公历 1901 年至 2100 年之间的 200 年 
 */
import java.text.*;
import java.util.*;
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 = 1901;
      int m = 1;
      int d = 1;
      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
  
         } else if (cmd.equalsIgnoreCase("month")) {
   
         String[] t = c.getMonthTable();
   
         for (int i=0; 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 (year0==0) isLeap = false;
    
      if (year@0==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
    
              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)@0   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
     
               daysDiff  = 365;
      
         if (isGregorianLeapYear(i)) daysDiff  = 1; // leap year
      
      }
      
      for (int i=startMonth; 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)
       
         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
        
          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;
         
 }
         
 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)) "/n");
         
 buf.append("Earthly Branch: " ((chineseYear-1)) "/n");
         
 buf.append("Chinese Month: " chineseMonth "/n");
         
 buf.append("Chinese Date: " chineseDate "/n");
         
 buf.append("Sectional Term: " sectionalTerm "/n");
         
 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)]
         
 branchNames[(chineseYear 1-1)]
         
 " - " animalNames[(chineseYear 1-1)] "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
         
           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 = 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
           
             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[i] = blank;
             
 }
             
 for (int i=0; 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 = 
              
 {"大寒","雨水","春分","谷雨","夏满","夏至","大暑","处暑","秋分", 
              
 "霜降","小雪","冬至"}; 
              
 private static String[] sectionalTermNames = 
              
 {"小寒","立春","惊蛰","清明","立夏","芒种","小暑","立秋","白露", 
              
 "寒露","立冬","大雪"}; 
              
 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;
              
 }
              
}
              
[/HTML]
             
            
           
          
         
        
       
      
     
    
   
  

中国二百年年历 1901 年至 2100 年

我用上面这个程式制作了二百年年历，1901 年至 2100 年，全部收录在这本书中。

年历格式说明：

农历日期列在公历日期后面。
节气用节气名称标明。
农历每月第一天用月份名称标明。
例如，2000 年一月的表达格式如下：
[HTML]

 

   一月 
  
日 一 二 三 四 五 六
  
1/25
  
2/26 3/27 4/28 5/29 立春 腊月 8/ 2
  
9/ 3 10/ 4 11/ 5 12/ 6 13/ 7 14/ 8 15/ 9
  
16/10 17/11 18/12 19/13 20/14 雨水 22/16
  
23/17 24/18 25/19 26/20 27/21 28/22 29/23
  
30/24 31/25
 

[/HTML]

其中：

"1/25" - 表示公历 1 号和农历 25 号。
"立春" - 表示节气。
"腊月" - 表示农历 12 月第一天。

------
有关中国年历算法和程式的详细注解和二百年年历，请参考
“和荣笔记 - 中国农历二百年算法及年历”
- http://www.herongyang.com/year_gb/