Bacteria Growth

package bacteriagrowth;
import java.util.Scanner;
public class BacteriaGrowth {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        double y,n,k,t,kt = 0;
        System.out.print("Please enter the initial bacteria amount:");
        n = input.nextDouble();
        System.out.print("Please enter the constant value:");
        k = input.nextDouble();
        System.out.print("Please inter the amount of time: ");
        t = input.nextDouble();
        y = (int)(n*Math.exp(k*t));
        System.out.println(y+"bacteria will be present after"+t+"hours");
    }
}