//Program to calculate number of days between 2 dates

import java.util.Date;
import java.text.SimpleDateFormat;
class Example 

{
   public static void main(String args[])

   {
  SimpleDateFormat myFormat = new SimpleDateFormat("dd MM yyyy");
  String d1 = "01 01 2018";
  String d2 = "22 02 2019";

  try {
        Date dateBefore = myFormat.parse(dateBeforeString);
        Date dateAfter = myFormat.parse(dateAfterString);
        long difference = dateAfter.getTime() - dateBefore.getTime();
        float daysBetween = (difference / (1000*60*60*24));
               System.out.println("Number of Days between dates: "+daysBetween);
      }  

        catch (IOException e) 

         {
        System.out.println("Invalid");
  }
   }
}