()
| 462 | /// |
| 463 | /// - #size() |
| 464 | public boolean isEmpty() { |
| 465 | return size() == 0; |
| 466 | } |
| 467 | |
| 468 | /// Returns a set of the keys contained in this map. The set is backed by |
| 469 | /// this map so changes to one are reflected by the other. The returned set |