| Interface | Description | 
|---|---|
| ConcurrentHashMapV8.MappingFunction<K,V> | A function computing a mapping from the given key to a value. | 
| ConcurrentHashMapV8.RemappingFunction<K,V> | A function computing a new mapping given a key and its current
 mapped value (or  nullif there is no current
 mapping). | 
| Class | Description | 
|---|---|
| ConcurrentHashMapV8<K,V> | A hash table supporting full concurrency of retrievals and
 high expected concurrency for updates. | 
| LongAdder | One or more variables that together maintain an initially zero
  longsum. | 
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