| 859 |
|
* @param key key with which the specified value is to be associated. |
| 860 |
|
* @param value value to be associated with the specified key. |
| 861 |
|
* @return previous value associated with specified key, or <tt>null</tt> |
| 862 |
< |
* if there was no mapping for key. A <tt>null</tt> return can |
| 863 |
< |
* also indicate that the map previously associated <tt>null</tt> |
| 864 |
< |
* with the specified key, if the implementation supports |
| 865 |
< |
* <tt>null</tt> values. |
| 866 |
< |
* |
| 867 |
< |
* @throws ClassCastException if the class of the specified key or value |
| 868 |
< |
* prevents it from being stored in this map. |
| 862 |
> |
* if there was no mapping for key. |
| 863 |
|
* @throws NullPointerException if the specified key or value is |
| 864 |
|
* <tt>null</tt>. |
| 865 |
< |
* |
| 872 |
< |
**/ |
| 865 |
> |
*/ |
| 866 |
|
public V putIfAbsent(K key, V value) { |
| 867 |
|
if (value == null) |
| 868 |
|
throw new NullPointerException(); |
