In this question im not able to get the output.

import java.util.*;
class TwoDateDiff
{
public static void main (String args[])throws InputMismatchException
{
Scanner scan = new Scanner(System.in);

int d1,m1,d2,m2,y,i,total1,total2,diff;

System.out.println("Enter the day and month of first date: ");
d1 = scan.nextInt();
m1 = scan.nextInt();

System.out.println("Enter the day and month of second date: ");
d2 = scan.nextInt();
m2 = scan.nextInt();

System.out.println("Enter the year: ");
y = scan.nextInt();


int dom[] = {31,28,31,30,31,30,31,31,30,31,30,31};

//If it is a leap year, februrary should have 29 days.
if(y%4 == 0)
dom[1] = 29;

// Check for validity of date
if(d1 < 0 || m1 > 12 || d1 > dom[m1-1] || d2 < 0 || m2 >12 || d2 > dom[m2-1]){
System.out.println("Please enter a valid date.");
}else{



total1 = 0;
//Add the days of the month
for(i=0; i< m1-1; i++)
total1 += dom[i];

//Add the days of the current month
total1+=d1;

total2 = 0;
//Add the days of the month
for(i=0; i< m2-1; i++)
total2 += dom[i];

//Add the days of the current month
total2+=d2;

diff = (int) Math.abs(total1 - total2);

System.out.println("Days elapsed : "+diff);
}//else

}//end of main
}//end of class