Change the date Format from YYYY-MM-DD to DD-MM-YYYY

In Controller

import java.text.ParseException;
import java.text.SimpleDateFormat;

import java.text.DateFormat; 
import java.util.Date; 

String newProjStartDate,newProjEndDate, sConvertNewStartDate, sConvertNewEndDate = null;


newProjStartDate= (String)pageContext.getSessionValue("newstartdate");
newProjEndDate= (String)pageContext.getSessionValue("newenddate");

try 


{
DateFormat formatter ; 
Date date, date1, date2, date3; 
formatter = new SimpleDateFormat("yyyy-MM-dd");
date = formatter.parse(newProjStartDate);
date1 = formatter.parse(newProjEndDate); 

pageContext.writeDiagnostics(this, "date is =" + date, 1);
pageContext.writeDiagnostics(this, "date1 is =" + date1, 1);

SimpleDateFormat formatterNew = new SimpleDateFormat("dd-MMM-yyyy");
sConvertNewStartDate=formatterNew.format(date);
sConvertNewEndDate=formatterNew.format(date1);

pageContext.writeDiagnostics(this, "sConvertStartDate date is =" + sConvertNewStartDate, 1);
pageContext.writeDiagnostics(this, "sConvertEndDate date1 is =" + sConvertNewEndDate, 1);

}

catch (ParseException e)

{
throw new IllegalArgumentException("Encountered Date format error "+ e);
}