Using Double and %s %2f in Java

public class abejeroact46 {
public static void main(String []Args) {

Double grade1 = 85.0;
Double grade2 = 79.0;
Double grade3 = 92.0;

Double sum = (grade1+grade2+grade3);

Double i = sum/3;
String name = "ana";

System.out.printf("%s Average is Double %2f", name, i);
}
}