Returns whether this map is empty. @return true if this map has no elements, false otherwise. @see #size()
()
| 209 | * @see #size() |
| 210 | */ |
| 211 | public boolean isEmpty() { |
| 212 | return size() == 0; |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * Returns a set of the keys contained in this map. The set is backed by |