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天氣預報 獲取節氣的代碼
package com.zzk.cn;
import java.util.*;
public class SolarTerm {
public static void main(String[] s) throws Exception {
SolarTerm st = new SolarTerm();
if (s.length == 3) {
System.out.println(st.getSoralTerm(Integer.parseInt(s[0]),
Integer.parseInt(s[1]), Integer.parseInt(s[2])));
}
System.out.println(st.getSoralTerm(2011, 12, 22));
System.out.println(st.getSoralTerm(2011, 12, 24)+"--------");
}
final static long[] STermInfo = new long[] { 0, 21208, 42467, 63836, 85337,
107014, 128867, 150921, 173149, 195551, 218072, 240693, 263343,
285989, 308563, 331033, 353350, 375494, 397447, 419210, 440795,
462224, 483532, 504758 };
private static final String[] SolarTerm = new String[] { "小寒", "大寒", "立春",
"雨水", "驚蟄", "春分", "清明", "穀雨", "立夏", "小滿", "芒種", "夏至", "小暑", "大暑",
"立秋", "處暑", "白露", "秋分", "寒露", "霜降", "立冬", "小雪", "大雪", "冬至" };
public SolarTerm() {
}
/** 核心方法 根據日期得到節氣 */
public String getSoralTerm(Date Date) {
Calendar cal = Calendar.getInstance();
cal.setTime(Date);
int y = cal.get(Calendar.YEAR);
int m = cal.get(Calendar.MONTH) + 1;
int d = cal.get(Calendar.DAY_OF_MONTH);
return getSoralTerm(y, m, d);
}
/** 核心方法 根據日期(y年m月d日)得到節氣 */
public String getSoralTerm(int y, int m, int d) {
String solarTerms;
if (d == sTerm(y, (m - 1) * 2))
solarTerms = SolarTerm[(m - 1) * 2];
else if (d == sTerm(y, (m - 1) * 2 + 1))
solarTerms = SolarTerm[(m - 1) * 2 + 1];
else {
// 到這裏說明非節氣時間
solarTerms = "";
}
return solarTerms;
}
// ===== y年的第n個節氣為幾日(從0小寒起算)
private int sTerm(int y, int n) {
Calendar cal = Calendar.getInstance();
cal.set(1900, 0, 6, 2, 5, 0);
long temp = cal.getTime().getTime();
cal.setTime(new Date(
(long) ((31556925974.7 * (y - 1900) + STermInfo[n] * 60000L) + temp)));
return cal.get(Calendar.DAY_OF_MONTH);
}
}
輸出：
冬至
--------
最後更新：2017-04-02 06:52:16