JAVA CERTIFICATION QUESTION: divide by zero

public class DivisionTest {
   static int res = 0;
   static int div(int a, int b) {
      var r = 0;
      try {
         r = a/b;
         res = res + 1;
      } catch (ArithmeticException e) {
         res = res + 2;
      } finally {
         res  = res + 3;
      }
      return r;
   }
   static double div(double a, double b) {
      var r = 0.0;
      try {
         r = a/b;
         res = res + 4;
      } catch (ArithmeticException e) {
         res = res + 5;
      } finally {
         res  = res + 6;
      }
      return r;
   }
   public static void main(String[] args) {
      div(0,0);
      div(0.0,0.0);
      System.out.println(res);
   }
}