public boolean equals(Object otherObject)    {       // a quick test to see if the objects are identical       if (this == otherObject) return true;       // must return false if the explicit parameter is null       if (otherObject == null) return false;       // if the classes don't match, they can't be equal       if (getClass() != otherObject.getClass()) return false;       // now we know otherObject is a non-null Employee       Employee other = (Employee) otherObject;       // test whether the fields have identical values       return name.equals(other.name) && salary == other.salary && hireDay.equals(other.hireDay);    }