docs/DesignPatterns
view code/composite-leaf.java @ 21:80c995d97cfa
updated Observer
| author | meillo@marmaro.de |
|---|---|
| date | Tue, 26 Jun 2007 14:36:01 +0200 |
| parents | |
| children |
line source
1 class Leaf implements IComponent {
2 private String id;
4 public Leaf(String id) {
5 this.id = id;
6 }
8 public String toString() {
9 return this.id;
10 }
12 public Collection getChildren() {
13 return null;
14 }
16 // false because failed to add
17 public boolean addComponent(IComponent c) {
18 return false;
19 }
21 // false because failed to find it for removal
22 public boolean removeComponent(IComponent c) {
23 return false;
24 }
25 }