Java Programming

Hi, I am from Taiwan (ROC).
2009 in our country year must minus 1911 and become 98.
2 years later (2011), our country year becomes 100.
"2009.01.08" I want to display "098.01.08" so I use the format "yyy.MM.dd"
but the result is "98.01.08".

If discare DAY_OF_WEEK problem.

Below is my code.

import java.text.SimpleDateFormat;
import java.util.Calendar;

class SimpleROCDateFormat extends SimpleDateFormat
{
  SimpleROCDateFormat(String ptn)
  {
    super(ptn);
  }
  
  public String format(Calendar cal)
  {
    Calendar calendar = (Calendar)cal.clone();
    calendar.add(Calendar.YEAR,-1911);
    return super.format(calendar.getTime());
  }
}

import java.util.*;

class test
{
  public static void main(String args[])
  {
   Calendar now = Calendar.getInstance();
   SimpleROCDateFormat sROCdf = new SimpleROCDateFormat("yyy.MM.dd");
   String ROCnow = sROCdf.format(now);
   System.out.println(ROCnow);
  }
}

Wish your help. Thank you!!