---

Separating Accessors and Mutators

• Better interface:
  

  String getToken();
  void nextToken();
  

• Even more convenient:
  

  String getToken();
  String nextToken(); // returns current
  

• Refine rule of thumb:
  Mutators can return a convenience value, provided there is also an accessor to get the same value

---

previous | start | next .... [Slide 24] ....