parameter example: dog years

public class parameterExample  {

    public static void main (String[] args) {

        int ruff = 10;

        dogYears (20);

        dogYears (7);

        dogYears (12);

         //  this wasn't talked in class but could be useful for extra credit

        dogYears (ruff);

    }

    public static void dogYears (int human_years) {

        int dog_years;

        dog_years = human_years * 7;

        System.out.println (dog_years);

    }

}