Program to compute distance light travels

/* Program to compute distance light travels */

class P13
{
    public static void main(String args[])
    {
        int lightspeed;
        long days, seconds,distance;
       
        //approximate speed of light in miles per second
        lightspeed = 186000;
       
        days = 1000; // specify number of days here

        seconds = days * 24 * 60 * 60;    // convert to seconds

        distance = lightspeed * seconds;   // compute distance
   
        System.out.print(" In "+days);
        System.out.print(" days light will travel about ");
        System.out.print(distance+" miles");
    }
}