은서야 서진아 아빠랑 사진 찍자~

양음력 변화 자바 메소드



import com.ibm.icu.util.Calendar ;
import com.ibm.icu.util.ChineseCalendar ;

/**
* 양음력간 변환
*
* 사용법>>
*  LunarCalendar lc = new LunarCalendar() ;
*  String lunarDate = lc.toLunar("20021023") ;
*  String date = lc.fromLunar("20020918") ;
*/
public class LunarCalendar {
 
 private Calendar cal ;
 private ChineseCalendar cc ;

 public LunarCalendar() {
  // default TimeZone, Locale 을 사용..
  cal = Calendar.getInstance() ;
  cc = new ChineseCalendar();
 }

 /**
 * 양력(yyyyMMdd) -> 음력(yyyyMMdd)
 *
 */
 public synchronized String toLunar( String yyyymmdd ) {
  if(  yyyymmdd == null )
   return "" ;

  String date = yyyymmdd.trim() ;
  if( date.length() != 8 ) {
   if( date.length() == 4 )
    date = date + "0101" ;
   else if( date.length() == 6 )
    date = date + "01" ;
   else if( date.length() > 8 )
    date = date.substring(0,8) ;
   else
    return "" ;
  }

  cal.set( Calendar.YEAR, Integer.parseInt(date.substring(0,4)) ) ;
  cal.set( Calendar.MONTH, Integer.parseInt(date.substring(4,6))-1 ) ;
  cal.set( Calendar.DAY_OF_MONTH, Integer.parseInt(date.substring(6)) ) ;

  cc.setTimeInMillis( cal.getTimeInMillis() ) ;

  // ChinessCalendar.YEAR 는 1~60 까지의 값만 가지고 , ChinessCalendar.EXTENDED_YEAR 는 Calendar.YEAR 값과 2637 만큼의 차이를 가집니다.
  int y = cc.get(ChineseCalendar.EXTENDED_YEAR)-2637 ;
  int m = cc.get(ChineseCalendar.MONTH)+1 ;
  int d = cc.get(ChineseCalendar.DAY_OF_MONTH) ;

  StringBuffer ret = new StringBuffer() ;
  if( y < 1000 )
   ret.append( "0" ) ;
  else if( y < 100 )
   ret.append( "00" ) ;
  else if( y < 10 )
   ret.append( "000" ) ;
  ret.append( y ) ;

  if( m < 10 )
   ret.append( "0" ) ;
  ret.append( m ) ;

  if( d < 10 )
   ret.append( "0" ) ;
  ret.append( d ) ;

  return ret.toString() ;
 }

 /**
 * 음력(yyyyMMdd) -> 양력(yyyyMMdd)
 *
 */
 public synchronized String fromLunar( String yyyymmdd ) {
  if(  yyyymmdd == null )
   return "" ;

  String date = yyyymmdd.trim() ;
  if( date.length() != 8 ) {
   if( date.length() == 4 )
    date = date + "0101" ;
   else if( date.length() == 6 )
    date = date + "01" ;
   else if( date.length() > 8 )
    date = date.substring(0,8) ;
   else
    return "" ;
  }

  cc.set( ChineseCalendar.EXTENDED_YEAR, Integer.parseInt(date.substring(0,4))+2637 ) ;
  cc.set( ChineseCalendar.MONTH, Integer.parseInt(date.substring(4,6))-1 ) ;
  cc.set( ChineseCalendar.DAY_OF_MONTH, Integer.parseInt(date.substring(6)) ) ;

  cal.setTimeInMillis( cc.getTimeInMillis() ) ;

  int y = cal.get(Calendar.YEAR) ;
  int m = cal.get(Calendar.MONTH)+1 ;
  int d = cal.get(Calendar.DAY_OF_MONTH) ;

  StringBuffer ret = new StringBuffer() ;
  if( y < 1000 )
   ret.append( "0" ) ;
  else if( y < 100 )
   ret.append( "00" ) ;
  else if( y < 10 )
   ret.append( "000" ) ;
  ret.append( y ) ;

  if( m < 10 )
   ret.append( "0" ) ;
  ret.append( m ) ;

  if( d < 10 )
   ret.append( "0" ) ;
  ret.append( d ) ;

  return ret.toString() ;
 }

}