HW4.43

 import java.util.Scanner;

 public class Solution
 {
     public static void main(String[] args)
     {
         Scanner input = new Scanner(System.in);
         System.out.print("Enter the number of second: ");
         int countDown = input.nextInt();

         input.close();

         long startTime = System.currentTimeMillis();
         long nowTime;
         for(int i = countDown; i > 0; i--)
         {
             System.out.println(i + " seconds remaining");
             nowTime = System.currentTimeMillis();
             while(nowTime - startTime < 1000)
                 nowTime = System.currentTimeMillis();
             startTime = System.currentTimeMillis();
         }

         System.out.println("Stopped");
     }
 }