TreeMap | Notion

Modifier and Type	Method and Description
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`ceilingEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#ceilingEntry-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns a key-value mapping associated with the least key greater than or equal to the given key, or `null` if there is no such key.
`K`	[`ceilingKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#ceilingKey-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns the least key greater than or equal to the given key, or `null` if there is no such key.
`void`	[`clear](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#clear-->)()`Removes all of the mappings from this map.
`Object`	[`clone](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#clone-->)()`Returns a shallow copy of this `TreeMap` instance.
[`Comparator](<https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html>)<? super [K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`comparator](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#comparator-->)()`Returns the comparator used to order the keys in this map, or `null` if this map uses the natural ordering of its keys.
`boolean`	[`containsKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#containsKey-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) key)`Returns `true` if this map contains a mapping for the specified key.
`boolean`	[`containsValue](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#containsValue-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) value)`Returns `true` if this map maps one or more keys to the specified value.
[`NavigableSet](<https://docs.oracle.com/javase/8/docs/api/java/util/NavigableSet.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`descendingKeySet](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#descendingKeySet-->)()`Returns a reverse order `NavigableSet` view of the keys contained in this map.
[`NavigableMap](<https://docs.oracle.com/javase/8/docs/api/java/util/NavigableMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`descendingMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#descendingMap-->)()`Returns a reverse order view of the mappings contained in this map.
[`Set](<https://docs.oracle.com/javase/8/docs/api/java/util/Set.html>)<[Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>>`	[`entrySet](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#entrySet-->)()`Returns a `Set` view of the mappings contained in this map.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`firstEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#firstEntry-->)()`Returns a key-value mapping associated with the least key in this map, or `null` if the map is empty.
`K`	[`firstKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#firstKey-->)()`Returns the first (lowest) key currently in this map.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`floorEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#floorEntry-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns a key-value mapping associated with the greatest key less than or equal to the given key, or `null` if there is no such key.
`K`	[`floorKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#floorKey-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns the greatest key less than or equal to the given key, or `null` if there is no such key.
`void`	[`forEach](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#forEach-java.util.function.BiConsumer->)([BiConsumer](<https://docs.oracle.com/javase/8/docs/api/java/util/function/BiConsumer.html>)<? super [K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),? super [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)> action)`Performs the given action for each entry in this map until all entries have been processed or the action throws an exception.
`V`	[`get](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#get-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) key)`Returns the value to which the specified key is mapped, or `null` if this map contains no mapping for the key.
[`SortedMap](<https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`headMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#headMap-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) toKey)`Returns a view of the portion of this map whose keys are strictly less than `toKey`.
[`NavigableMap](<https://docs.oracle.com/javase/8/docs/api/java/util/NavigableMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`headMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#headMap-K-boolean->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) toKey, boolean inclusive)`Returns a view of the portion of this map whose keys are less than (or equal to, if `inclusive` is true) `toKey`.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`higherEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#higherEntry-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns a key-value mapping associated with the least key strictly greater than the given key, or `null` if there is no such key.
`K`	[`higherKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#higherKey-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns the least key strictly greater than the given key, or `null` if there is no such key.
[`Set](<https://docs.oracle.com/javase/8/docs/api/java/util/Set.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`keySet](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#keySet-->)()`Returns a `Set` view of the keys contained in this map.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`lastEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#lastEntry-->)()`Returns a key-value mapping associated with the greatest key in this map, or `null` if the map is empty.
`K`	[`lastKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#lastKey-->)()`Returns the last (highest) key currently in this map.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`lowerEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#lowerEntry-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns a key-value mapping associated with the greatest key strictly less than the given key, or `null` if there is no such key.
`K`	[`lowerKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#lowerKey-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns the greatest key strictly less than the given key, or `null` if there is no such key.
[`NavigableSet](<https://docs.oracle.com/javase/8/docs/api/java/util/NavigableSet.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`navigableKeySet](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#navigableKeySet-->)()`Returns a `NavigableSet` view of the keys contained in this map.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`pollFirstEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#pollFirstEntry-->)()`Removes and returns a key-value mapping associated with the least key in this map, or `null` if the map is empty.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`pollLastEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#pollLastEntry-->)()`Removes and returns a key-value mapping associated with the greatest key in this map, or `null` if the map is empty.
`V`	[`put](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#put-K-V->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key, [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) value)`Associates the specified value with the specified key in this map.
`void`	[`putAll](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#putAll-java.util.Map->)([Map](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.html>)<? extends [K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),? extends [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)> map)`Copies all of the mappings from the specified map to this map.
`V`	[`remove](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#remove-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) key)`Removes the mapping for this key from this TreeMap if present.
`V`	[`replace](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#replace-K-V->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key, [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) value)`Replaces the entry for the specified key only if it is currently mapped to some value.
`boolean`	[`replace](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#replace-K-V-V->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key, [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) oldValue, [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) newValue)`Replaces the entry for the specified key only if currently mapped to the specified value.
`void`	[`replaceAll](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#replaceAll-java.util.function.BiFunction->)([BiFunction](<https://docs.oracle.com/javase/8/docs/api/java/util/function/BiFunction.html>)<? super [K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),? super [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),? extends [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)> function)`Replaces each entry's value with the result of invoking the given function on that entry until all entries have been processed or the function throws an exception.
`int`	[`size](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#size-->)()`Returns the number of key-value mappings in this map.
[`NavigableMap](<https://docs.oracle.com/javase/8/docs/api/java/util/NavigableMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`subMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#subMap-K-boolean-K-boolean->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) fromKey, boolean fromInclusive, [K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) toKey, boolean toInclusive)`Returns a view of the portion of this map whose keys range from `fromKey` to `toKey`.
[`SortedMap](<https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`subMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#subMap-K-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) fromKey, [K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) toKey)`Returns a view of the portion of this map whose keys range from `fromKey`, inclusive, to `toKey`, exclusive.
[`SortedMap](<https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`tailMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#tailMap-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) fromKey)`Returns a view of the portion of this map whose keys are greater than or equal to `fromKey`.
[`NavigableMap](<https://docs.oracle.com/javase/8/docs/api/java/util/NavigableMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`tailMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#tailMap-K-boolean->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) fromKey, boolean inclusive)`Returns a view of the portion of this map whose keys are greater than (or equal to, if `inclusive` is true) `fromKey`.
[`Collection](<https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html>)<[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`values](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#values-->)()`Returns a `Collection` view of the values contained in this map.

Modifier and Type	Method and Description
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`ceilingEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#ceilingEntry-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns a key-value mapping associated with the least key greater than or equal to the given key, or `null` if there is no such key.
`K`	[`ceilingKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#ceilingKey-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns the least key greater than or equal to the given key, or `null` if there is no such key.
`void`	[`clear](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#clear-->)()`Removes all of the mappings from this map.
`Object`	[`clone](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#clone-->)()`Returns a shallow copy of this `TreeMap` instance.
[`Comparator](<https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html>)<? super [K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`comparator](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#comparator-->)()`Returns the comparator used to order the keys in this map, or `null` if this map uses the natural ordering of its keys.
`boolean`	[`containsKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#containsKey-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) key)`Returns `true` if this map contains a mapping for the specified key.
`boolean`	[`containsValue](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#containsValue-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) value)`Returns `true` if this map maps one or more keys to the specified value.
[`NavigableSet](<https://docs.oracle.com/javase/8/docs/api/java/util/NavigableSet.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`descendingKeySet](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#descendingKeySet-->)()`Returns a reverse order `NavigableSet` view of the keys contained in this map.
[`NavigableMap](<https://docs.oracle.com/javase/8/docs/api/java/util/NavigableMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`descendingMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#descendingMap-->)()`Returns a reverse order view of the mappings contained in this map.
[`Set](<https://docs.oracle.com/javase/8/docs/api/java/util/Set.html>)<[Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>>`	[`entrySet](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#entrySet-->)()`Returns a `Set` view of the mappings contained in this map.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`firstEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#firstEntry-->)()`Returns a key-value mapping associated with the least key in this map, or `null` if the map is empty.
`K`	[`firstKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#firstKey-->)()`Returns the first (lowest) key currently in this map.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`floorEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#floorEntry-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns a key-value mapping associated with the greatest key less than or equal to the given key, or `null` if there is no such key.
`K`	[`floorKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#floorKey-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns the greatest key less than or equal to the given key, or `null` if there is no such key.
`void`	[`forEach](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#forEach-java.util.function.BiConsumer->)([BiConsumer](<https://docs.oracle.com/javase/8/docs/api/java/util/function/BiConsumer.html>)<? super [K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),? super [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)> action)`Performs the given action for each entry in this map until all entries have been processed or the action throws an exception.
`V`	[`get](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#get-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) key)`Returns the value to which the specified key is mapped, or `null` if this map contains no mapping for the key.
[`SortedMap](<https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`headMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#headMap-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) toKey)`Returns a view of the portion of this map whose keys are strictly less than `toKey`.
[`NavigableMap](<https://docs.oracle.com/javase/8/docs/api/java/util/NavigableMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`headMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#headMap-K-boolean->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) toKey, boolean inclusive)`Returns a view of the portion of this map whose keys are less than (or equal to, if `inclusive` is true) `toKey`.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`higherEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#higherEntry-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns a key-value mapping associated with the least key strictly greater than the given key, or `null` if there is no such key.
`K`	[`higherKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#higherKey-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns the least key strictly greater than the given key, or `null` if there is no such key.
[`Set](<https://docs.oracle.com/javase/8/docs/api/java/util/Set.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`keySet](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#keySet-->)()`Returns a `Set` view of the keys contained in this map.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`lastEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#lastEntry-->)()`Returns a key-value mapping associated with the greatest key in this map, or `null` if the map is empty.
`K`	[`lastKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#lastKey-->)()`Returns the last (highest) key currently in this map.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`lowerEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#lowerEntry-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns a key-value mapping associated with the greatest key strictly less than the given key, or `null` if there is no such key.
`K`	[`lowerKey](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#lowerKey-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key)`Returns the greatest key strictly less than the given key, or `null` if there is no such key.
[`NavigableSet](<https://docs.oracle.com/javase/8/docs/api/java/util/NavigableSet.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`navigableKeySet](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#navigableKeySet-->)()`Returns a `NavigableSet` view of the keys contained in this map.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`pollFirstEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#pollFirstEntry-->)()`Removes and returns a key-value mapping associated with the least key in this map, or `null` if the map is empty.
[`Map.Entry](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`pollLastEntry](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#pollLastEntry-->)()`Removes and returns a key-value mapping associated with the greatest key in this map, or `null` if the map is empty.
`V`	[`put](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#put-K-V->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key, [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) value)`Associates the specified value with the specified key in this map.
`void`	[`putAll](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#putAll-java.util.Map->)([Map](<https://docs.oracle.com/javase/8/docs/api/java/util/Map.html>)<? extends [K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),? extends [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)> map)`Copies all of the mappings from the specified map to this map.
`V`	[`remove](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#remove-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) key)`Removes the mapping for this key from this TreeMap if present.
`V`	[`replace](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#replace-K-V->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key, [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) value)`Replaces the entry for the specified key only if it is currently mapped to some value.
`boolean`	[`replace](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#replace-K-V-V->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) key, [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) oldValue, [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) newValue)`Replaces the entry for the specified key only if currently mapped to the specified value.
`void`	[`replaceAll](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#replaceAll-java.util.function.BiFunction->)([BiFunction](<https://docs.oracle.com/javase/8/docs/api/java/util/function/BiFunction.html>)<? super [K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),? super [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),? extends [V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)> function)`Replaces each entry's value with the result of invoking the given function on that entry until all entries have been processed or the function throws an exception.
`int`	[`size](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#size-->)()`Returns the number of key-value mappings in this map.
[`NavigableMap](<https://docs.oracle.com/javase/8/docs/api/java/util/NavigableMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`subMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#subMap-K-boolean-K-boolean->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) fromKey, boolean fromInclusive, [K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) toKey, boolean toInclusive)`Returns a view of the portion of this map whose keys range from `fromKey` to `toKey`.
[`SortedMap](<https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`subMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#subMap-K-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) fromKey, [K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) toKey)`Returns a view of the portion of this map whose keys range from `fromKey`, inclusive, to `toKey`, exclusive.
[`SortedMap](<https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`tailMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#tailMap-K->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) fromKey)`Returns a view of the portion of this map whose keys are greater than or equal to `fromKey`.
[`NavigableMap](<https://docs.oracle.com/javase/8/docs/api/java/util/NavigableMap.html>)<[K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>),[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`tailMap](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#tailMap-K-boolean->)([K](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>) fromKey, boolean inclusive)`Returns a view of the portion of this map whose keys are greater than (or equal to, if `inclusive` is true) `fromKey`.
[`Collection](<https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html>)<[V](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html>)>`	[`values](<https://docs.oracle.com/javase/8/docs/api/java/util/TreeMap.html#values-->)()`Returns a `Collection` view of the values contained in this map.