Date d = new Date();
String s = null;
s = DateFormat.getDateInstance(DateFormat.FULL).format(dt);
System.out.println(s)

DateFormat d = new SimpleDateFormat("yyyy-mm-dd");
String timeone = "2012-03-05";
String timetwo = "2012-05-05";
Date d1 = d.parse(timeone);
Date d2 = d.parse(timetwo);
long diff = d1.getTime() - d2.getTime();

long days = diff/(1000*60*60*24);