TreeMap (GWT 2.8.2)

java.lang.Object
- java.util.AbstractMap<K,V>
- - java.util.TreeMap<K,V>

Type Parameters:

K - key type

V - value type

All Implemented Interfaces:

Serializable, Map<K,V>, NavigableMap<K,V>, SortedMap<K,V>
```
public class TreeMap<K,V>
extends AbstractMap<K,V>
implements Serializable
```
Implements a TreeMap using a red-black tree. This guarantees O(log n) performance on lookups, inserts, and deletes while maintaining linear in-order traversal time. Null keys and values are fully supported if the comparator supports them (the default comparator does not).

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class java.util.AbstractMap
  AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>
- Nested classes/interfaces inherited from interface java.util.Map
  Map.Entry<K,V>

Constructor Summary

Constructors
Constructor and Description

TreeMap()

TreeMap(Comparator<? super K> c)

TreeMap(Map<? extends K,? extends V> map)

TreeMap(SortedMap<K,? extends V> map)

Constructors
Constructor and Description
`TreeMap()`
`TreeMap(Comparator<? super K> c)`
`TreeMap(Map<? extends K,? extends V> map)`
`TreeMap(SortedMap<K,? extends V> map)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Map.Entry<K,V>`	`ceilingEntry(K key)`
`K`	`ceilingKey(K key)`
`void`	`clear()`
`Comparator<? super K>`	`comparator()`
`boolean`	`containsKey(Object k)`
`NavigableSet<K>`	`descendingKeySet()`
`NavigableMap<K,V>`	`descendingMap()`
`Set<Map.Entry<K,V>>`	`entrySet()`
`Map.Entry<K,V>`	`firstEntry()`
`K`	`firstKey()`
`Map.Entry<K,V>`	`floorEntry(K key)`
`K`	`floorKey(K key)`
`V`	`get(Object k)`
`SortedMap<K,V>`	`headMap(K toKey)`
`NavigableMap<K,V>`	`headMap(K toKey, boolean inclusive)`
`Map.Entry<K,V>`	`higherEntry(K key)`
`K`	`higherKey(K key)`
`Set<K>`	`keySet()`
`Map.Entry<K,V>`	`lastEntry()`
`K`	`lastKey()`
`Map.Entry<K,V>`	`lowerEntry(K key)`
`K`	`lowerKey(K key)`
`NavigableSet<K>`	`navigableKeySet()`
`Map.Entry<K,V>`	`pollFirstEntry()`
`Map.Entry<K,V>`	`pollLastEntry()`
`V`	`put(K key, V value)`
`V`	`remove(Object k)`
`int`	`size()`
`NavigableMap<K,V>`	`subMap(K fromKey, boolean fromInclusive, K toKey, boolean toInclusive)`
`SortedMap<K,V>`	`subMap(K fromKey, K toKey)`
`SortedMap<K,V>`	`tailMap(K fromKey)`
`NavigableMap<K,V>`	`tailMap(K fromKey, boolean inclusive)`

Methods inherited from class java.util.AbstractMap
containsValue, equals, hashCode, isEmpty, putAll, toString, values

Methods inherited from class java.lang.Object
finalize, getClass

Methods inherited from interface java.util.Map
compute, computeIfAbsent, computeIfPresent, containsValue, forEach, getOrDefault, isEmpty, merge, putAll, putIfAbsent, remove, replace, replace, replaceAll, values

- Constructor Detail
  - TreeMap
```
public TreeMap()
```
  - TreeMap
```
public TreeMap(Comparator<? super K> c)
```
  - TreeMap
```
public TreeMap(Map<? extends K,? extends V> map)
```
  - TreeMap
```
public TreeMap(SortedMap<K,? extends V> map)
```
- Method Detail
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface Map<K,V>
    
    Overrides:
    
    clear in class AbstractMap<K,V>
  - comparator
```
public Comparator<? super K> comparator()
```
    Specified by:
    
    comparator in interface SortedMap<K,V>
  - entrySet
```
public Set<Map.Entry<K,V>> entrySet()
```
    Specified by:
    
    entrySet in interface Map<K,V>
  - headMap
```
public NavigableMap<K,V> headMap(K toKey,
                                 boolean inclusive)
```
    Specified by:
    
    headMap in interface NavigableMap<K,V>
  - put
```
public V put(K key,
             V value)
```
    Specified by:
    
    put in interface Map<K,V>
    
    Overrides:
    
    put in class AbstractMap<K,V>
  - remove
```
public V remove(Object k)
```
    Specified by:
    
    remove in interface Map<K,V>
    
    Overrides:
    
    remove in class AbstractMap<K,V>
  - size
```
public int size()
```
    Specified by:
    
    size in interface Map<K,V>
    
    Overrides:
    
    size in class AbstractMap<K,V>
  - subMap
```
public NavigableMap<K,V> subMap(K fromKey,
                                boolean fromInclusive,
                                K toKey,
                                boolean toInclusive)
```
    Specified by:
    
    subMap in interface NavigableMap<K,V>
  - tailMap
```
public NavigableMap<K,V> tailMap(K fromKey,
                                 boolean inclusive)
```
    Specified by:
    
    tailMap in interface NavigableMap<K,V>
  - ceilingEntry
```
public Map.Entry<K,V> ceilingEntry(K key)
```
    Specified by:
    
    ceilingEntry in interface NavigableMap<K,V>
  - ceilingKey
```
public K ceilingKey(K key)
```
    Specified by:
    
    ceilingKey in interface NavigableMap<K,V>
  - containsKey
```
public boolean containsKey(Object k)
```
    Specified by:
    
    containsKey in interface Map<K,V>
    
    Overrides:
    
    containsKey in class AbstractMap<K,V>
  - descendingKeySet
```
public NavigableSet<K> descendingKeySet()
```
    Specified by:
    
    descendingKeySet in interface NavigableMap<K,V>
  - descendingMap
```
public NavigableMap<K,V> descendingMap()
```
    Specified by:
    
    descendingMap in interface NavigableMap<K,V>
  - firstEntry
```
public Map.Entry<K,V> firstEntry()
```
    Specified by:
    
    firstEntry in interface NavigableMap<K,V>
  - firstKey
```
public K firstKey()
```
    Specified by:
    
    firstKey in interface SortedMap<K,V>
  - floorEntry
```
public Map.Entry<K,V> floorEntry(K key)
```
    Specified by:
    
    floorEntry in interface NavigableMap<K,V>
  - floorKey
```
public K floorKey(K key)
```
    Specified by:
    
    floorKey in interface NavigableMap<K,V>
  - get
```
public V get(Object k)
```
    Specified by:
    
    get in interface Map<K,V>
    
    Overrides:
    
    get in class AbstractMap<K,V>
  - headMap
```
public SortedMap<K,V> headMap(K toKey)
```
    Specified by:
    
    headMap in interface SortedMap<K,V>
  - higherEntry
```
public Map.Entry<K,V> higherEntry(K key)
```
    Specified by:
    
    higherEntry in interface NavigableMap<K,V>
  - higherKey
```
public K higherKey(K key)
```
    Specified by:
    
    higherKey in interface NavigableMap<K,V>
  - keySet
```
public Set<K> keySet()
```
    Specified by:
    
    keySet in interface Map<K,V>
    
    Overrides:
    
    keySet in class AbstractMap<K,V>
  - lastEntry
```
public Map.Entry<K,V> lastEntry()
```
    Specified by:
    
    lastEntry in interface NavigableMap<K,V>
  - lastKey
```
public K lastKey()
```
    Specified by:
    
    lastKey in interface SortedMap<K,V>
  - lowerEntry
```
public Map.Entry<K,V> lowerEntry(K key)
```
    Specified by:
    
    lowerEntry in interface NavigableMap<K,V>
  - lowerKey
```
public K lowerKey(K key)
```
    Specified by:
    
    lowerKey in interface NavigableMap<K,V>
  - navigableKeySet
```
public NavigableSet<K> navigableKeySet()
```
    Specified by:
    
    navigableKeySet in interface NavigableMap<K,V>
  - pollFirstEntry
```
public Map.Entry<K,V> pollFirstEntry()
```
    Specified by:
    
    pollFirstEntry in interface NavigableMap<K,V>
  - pollLastEntry
```
public Map.Entry<K,V> pollLastEntry()
```
    Specified by:
    
    pollLastEntry in interface NavigableMap<K,V>
  - subMap
```
public SortedMap<K,V> subMap(K fromKey,
                             K toKey)
```
    Specified by:
    
    subMap in interface SortedMap<K,V>
  - tailMap
```
public SortedMap<K,V> tailMap(K fromKey)
```
    Specified by:
    
    tailMap in interface SortedMap<K,V>

Class TreeMap<K,V>

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

Nested classes/interfaces inherited from interface java.util.Map

Constructor Summary

Method Summary

Methods inherited from class java.util.AbstractMap

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Map

Constructor Detail

TreeMap

TreeMap

TreeMap

TreeMap

Method Detail

clear

comparator

entrySet

headMap

put

remove

size

subMap

tailMap

ceilingEntry

ceilingKey

containsKey

descendingKeySet

descendingMap

firstEntry

firstKey

floorEntry

floorKey

get

headMap

higherEntry

higherKey

keySet

lastEntry

lastKey

lowerEntry

lowerKey

navigableKeySet

pollFirstEntry

pollLastEntry

subMap

tailMap