To get Date in String

public static String getStrDate(XMLGregorianCalendar xCal) {
String strDate=null;
if(xCal!=null){
StringBuffer sb=null;
try{
sb=new StringBuffer();
sb.append(xCal.getDay());
sb.append(CommonData.DATE_SEPERATOR);
sb.append(xCal.getMonth());
sb.append(CommonData.DATE_SEPERATOR);
sb.append(xCal.getYear());
strDate=sb.toString();
}catch(Exception e){
e.printStackTrace();
}finally{
sb=null;
}
}
return strDate;
}