| Package | Description | 
|---|---|
| java.util.concurrent | Utility classes commonly useful in concurrent programming. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | ConcurrentSkipListMap<K,V>A scalable concurrent  ConcurrentNavigableMapimplementation. | 
| Modifier and Type | Method and Description | 
|---|---|
| ConcurrentNavigableMap<K,V> | ConcurrentSkipListMap. descendingMap() | 
| ConcurrentNavigableMap<K,V> | ConcurrentNavigableMap. descendingMap()Returns a reverse order view of the mappings contained in this map. | 
| ConcurrentNavigableMap<K,V> | ConcurrentSkipListMap. headMap(K toKey) | 
| ConcurrentNavigableMap<K,V> | ConcurrentNavigableMap. headMap(K toKey) | 
| ConcurrentNavigableMap<K,V> | ConcurrentSkipListMap. headMap(K toKey,
       boolean inclusive) | 
| ConcurrentNavigableMap<K,V> | ConcurrentNavigableMap. headMap(K toKey,
       boolean inclusive) | 
| ConcurrentNavigableMap<K,V> | ConcurrentSkipListMap. subMap(K fromKey,
      boolean fromInclusive,
      K toKey,
      boolean toInclusive) | 
| ConcurrentNavigableMap<K,V> | ConcurrentNavigableMap. subMap(K fromKey,
      boolean fromInclusive,
      K toKey,
      boolean toInclusive) | 
| ConcurrentNavigableMap<K,V> | ConcurrentSkipListMap. subMap(K fromKey,
      K toKey) | 
| ConcurrentNavigableMap<K,V> | ConcurrentNavigableMap. subMap(K fromKey,
      K toKey) | 
| ConcurrentNavigableMap<K,V> | ConcurrentSkipListMap. tailMap(K fromKey) | 
| ConcurrentNavigableMap<K,V> | ConcurrentNavigableMap. tailMap(K fromKey) | 
| ConcurrentNavigableMap<K,V> | ConcurrentSkipListMap. tailMap(K fromKey,
       boolean inclusive) | 
| ConcurrentNavigableMap<K,V> | ConcurrentNavigableMap. tailMap(K fromKey,
       boolean inclusive) | 
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