NepaliCalendar extends AbstractCalendar { @Override public DateTimeUnit toIso( DateTimeUnit dateTimeUnit ) { if ( dateTimeUnit.isIso8601() ) { return dateTimeUnit; } DateTime dateTime = START_ISO.toJodaDateTime(); int totalDays = 0; for ( int year = START_NEPAL.getYear(); year < dateTimeUnit.getYear(); year++ ) { totalDays += getYearTotal( year ); } for ( int month = START_NEPAL.getMonth(); month < dateTimeUnit.getMonth(); month++ ) { totalDays += CONVERSION_MAP.get( dateTimeUnit.getYear() )[month]; } totalDays += dateTimeUnit.getDay() - START_NEPAL.getDay(); dateTime = dateTime.plusDays( totalDays ); return new DateTimeUnit( DateTimeUnit.fromJodaDateTime( dateTime ), true ); }  static Calendar getInstance(); @Override String name(); @Override DateTimeUnit toIso( DateTimeUnit dateTimeUnit ); @Override DateTimeUnit fromIso( Date date ); @Override DateTimeUnit fromIso( DateTimeUnit dateTimeUnit ); @Override DateInterval toInterval( DateTimeUnit dateTimeUnit, DateIntervalType type, int offset, int length ); @Override int daysInYear( int year ); @Override int daysInMonth( int year, int month ); @Override int weeksInYear( int year ); @Override int isoWeek( DateTimeUnit dateTimeUnit ); @Override int week( DateTimeUnit dateTimeUnit ); @Override int isoWeekday( DateTimeUnit dateTimeUnit ); @Override int weekday( DateTimeUnit dateTimeUnit ); @Override String nameOfMonth( int month ); @Override String shortNameOfMonth( int month ); @Override String nameOfDay( int day ); @Override String shortNameOfDay( int day ); @Override DateTimeUnit minusYears( DateTimeUnit dateTimeUnit, int years ); @Override DateTimeUnit minusMonths( DateTimeUnit dateTimeUnit, int months ); @Override DateTimeUnit minusWeeks( DateTimeUnit dateTimeUnit, int weeks ); @Override DateTimeUnit minusDays( DateTimeUnit dateTimeUnit, int days ); @Override DateTimeUnit plusYears( DateTimeUnit dateTimeUnit, int years ); @Override DateTimeUnit plusMonths( DateTimeUnit dateTimeUnit, int months ); @Override DateTimeUnit plusWeeks( DateTimeUnit dateTimeUnit, int weeks ); @Override DateTimeUnit plusDays( DateTimeUnit dateTimeUnit, int days ); @Override DateTimeUnit isoStartOfYear( int year );  }
@Test public void testToIso() { Assert.assertEquals( new DateTimeUnit( 2014, 4, 14, true ), calendar.toIso( new DateTimeUnit( 2071, 1, 1 ) ) ); Assert.assertEquals( new DateTimeUnit( 2014, 4, 14, true ), calendar.toIso( 2071, 1, 1 ) ); }