()
| 14 | private Reference<? extends T> front; |
| 15 | |
| 16 | public Reference<? extends T> poll() { |
| 17 | Reference<? extends T> r = front; |
| 18 | if (front != null) { |
| 19 | if (front == front.jNext) { |
| 20 | front = null; |
| 21 | } else { |
| 22 | front = front.jNext; |
| 23 | } |
| 24 | } |
| 25 | return r; |
| 26 | } |
| 27 | |
| 28 | void add(Reference<? extends T> r) { |
| 29 | if (front == null) { |