package mypackage1;

import java.util.StringTokenizer;

public class FormatDate {

    public FormatDate() {

    }

    public static String formatDate(String strUnFormatted) {

        //if null, return an empty string

        String strTemp=((strUnFormatted==null)?"":strUnFormatted);

        if(!strTemp.equalsIgnoreCase("")) {

            //split string using StringTokenizer

            StringTokenizer st= new StringTokenizer(strTemp, "-");

            String strMM=st.nextToken();

            String strDD=st.nextToken();

            String strYYYY=st.nextToken();

            if(strMM.length()<2 && Integer.parseInt(strMM) < 10) {

                //append the zero

               strMM="0"+strMM;

            }

            if(strDD.length()<2 &&Integer.parseInt(strDD) < 10) {

                //append zero

               strDD="0"+strDD;

            }

            if(strYYYY.length()<4 && Integer.parseInt(strYYYY) < 100) {

                //append 20

               strYYYY="20"+strYYYY;

            }

           strTemp= strMM+"-"+strDD+"-"+strYYYY;

        }

        return strTemp;

    }

}