import java.util.*;
import java.text.SimpleDateFormat;

class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Calendar past = Calendar.getInstance();
		past.set(Calendar.DAY_OF_MONTH, 25);
		past.set(Calendar.MONTH, 2);
		past.set(Calendar.YEAR, 2016);
		System.out.println("past = " + new SimpleDateFormat("yyyy-MM-dd").format(past.getTime()));
		System.out.println("days = " + daysSince(past));
	}
	
	public static int daysSince(Calendar pastDate) {
    	Calendar presentDate = Calendar.getInstance();

    	int daysSince = 0;

    	while (pastDate.before(presentDate)) {
        	pastDate.add(Calendar.DAY_OF_MONTH, 1);
        	daysSince++;
    	}
    	return daysSince;
	}
}