Type Parameters:

K - the type of keys maintained by this map

V - the type of mapped values

All Superinterfaces:

ReadOnlyMap<K,V>, ReadOnlySequencedMap<K,V>, ReadOnlySortedMap<K,V>

All Known Implementing Classes:

ReadOnlyTreeMap
```
public interface ReadOnlyNavigableMap<K,V>
extends ReadOnlySortedMap<K,V>
```
This interface was originally copied from GitHub's Open-JDK Account. Though the original file has been modified, few changes have been applied to the Javadoc Commenting. Due to fact that that is a Java interface file, there were few method bodies with Source-Code to begin with - meaning this is largely a copy of Method-Signatures and Java-Doc Comments.

Method and parameter names & types have not been modified whatsoever; but several methods had to be eliminated for not being Read-Only. This Source-File was copied from the original Open JDK-21 file of the same (or, rather, highly similar) Interface-Name. The original file may be viewed on the JDK-21 GitHub public (and, coincidentally, Read-Only) Source-Release archive for Java Package java.util.*

The Original '.java' Source-File's Header-Copyright Information is included here: File Copyright. Within that Copyright Notice, it is suggested that a copy of the GNU Public License V2 also be included alongside.

Immutable variant of Java Collectionds Framework interface java.util.NavigableMap<K, V>. This interface contains all of the methods that the standard Java interface ReadOnlyNavigableMap contains - except those which would directly or indirectly modify / mutate the internal data-structure.
Hi-Lited Source-Code:
- View Here: Torello/Java/ReadOnly/ReadOnlyNavigableMap.java
- Open New Browser-Tab: Torello/Java/ReadOnly/ReadOnlyNavigableMap.java
File Size: 14,277 Bytes Line Count: 359 '\n' Characters Found

Nested Class Summary
- Nested classes/interfaces inherited from interface Torello.Java.ReadOnly.ReadOnlyMap
  ReadOnlyMap.Entry<K,V>

Method Summary

Retrieve the Least Map Key

Modifier and Type	Method
`K`	`floorKey(K key)`
`K`	`lowerKey(K key)`

Retrieve the Greatest Map Key
Modifier and Type	Method
`K`	`ceilingKey(K key)`
`K`	`higherKey(K key)`

Retrieve the Least Key-Value Pair
Modifier and Type	Method
`ReadOnlyMap.Entry<K,V>`	`ceilingEntry(K key)`
`ReadOnlyMap.Entry<K,V>`	`higherEntry(K key)`
`ReadOnlyMap.Entry<K,V>`	`lastEntry()`

Retrieve the Greatest Key-Value Pair
Modifier and Type	Method
`ReadOnlyMap.Entry<K,V>`	`firstEntry()`
`ReadOnlyMap.Entry<K,V>`	`floorEntry(K key)`
`ReadOnlyMap.Entry<K,V>`	`lowerEntry(K key)`

Retrieve a Sub-Map as a ReadOnlyNavigableMap
Modifier and Type	Method
`ReadOnlyNavigableMap<K,V>`	`headMap(K toKey, boolean inclusive)`
`ReadOnlyNavigableMap<K,V>`	`subMap(K fromKey, boolean fromInclusive, K toKey, boolean toInclusive)`
`ReadOnlyNavigableMap<K,V>`	`tailMap(K fromKey, boolean inclusive)`

Retrieve a Sub-Map as a ReadOnlySortedMap
Modifier and Type	Method
`ReadOnlySortedMap<K,V>`	`headMap(K toKey)`
`ReadOnlySortedMap<K,V>`	`subMap(K fromKey, K toKey)`
`ReadOnlySortedMap<K,V>`	`tailMap(K fromKey)`

Retrieve a Reverse-Ordered Map
Modifier and Type	Method
`ReadOnlyNavigableMap<K,V>`	`descendingMap()`

Retrieve a Set of Map Keys
Modifier and Type	Method
`ReadOnlyNavigableSet<K>`	`descendingKeySet()`
`ReadOnlyNavigableSet<K>`	`navigableKeySet()`

Default Methods (Interface Methods with a Concrete, Default Implementation)
Modifier and Type	Method
`default ReadOnlyNavigableMap<K,V>`	`reversed()`

Methods inherited from interface Torello.Java.ReadOnly.ReadOnlyMap
containsKey, containsKeyAND, containsKeyAND, containsKeyNAND, containsKeyNAND, containsKeyOR, containsKeyOR, containsKeyXOR, containsKeyXOR, containsValue, containsValueAND, containsValueAND, containsValueNAND, containsValueNAND, containsValueOR, containsValueOR, containsValueXOR, containsValueXOR, copyIntoMap, equals, forEach, get, getOrDefault, hashCode, isEmpty, size

Methods inherited from interface Torello.Java.ReadOnly.ReadOnlySequencedMap
sequencedEntrySet, sequencedKeySet, sequencedValues

Methods inherited from interface Torello.Java.ReadOnly.ReadOnlySortedMap
comparator, entrySet, firstKey, keySet, lastKey, values

- Method Detail
  - lowerEntry
    
    🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlyMap.Entry<K,V> lowerEntry(K 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.
    
    Parameters:
    
    key - the key
    
    Returns:
    
    an entry with the greatest key less than key, or null if there is no such key
    
    Throws:
    
    java.lang.ClassCastException - if the specified key cannot be compared with the keys currently in the map
    
    java.lang.NullPointerException - if the specified key is null and this map does not permit null keys
  - lowerKey
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    K lowerKey(K key)
    
    Returns the greatest key strictly less than the given key, or null if there is no such key.
    
    Parameters:
    
    key - the key
    
    Returns:
    
    the greatest key less than key, or null if there is no such key
    
    Throws:
    
    java.lang.ClassCastException - if the specified key cannot be compared with the keys currently in the map
    
    java.lang.NullPointerException - if the specified key is null and this map does not permit null keys
  - floorEntry
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlyMap.Entry<K,V> floorEntry(K 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.
    
    Parameters:
    
    key - the key
    
    Returns:
    
    an entry with the greatest key less than or equal to key, or null if there is no such key
    
    Throws:
    
    java.lang.ClassCastException - if the specified key cannot be compared with the keys currently in the map
    
    java.lang.NullPointerException - if the specified key is null and this map does not permit null keys
  - floorKey
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    K floorKey(K key)
    
    Returns the greatest key less than or equal to the given key, or null if there is no such key.
    
    Parameters:
    
    key - the key
    
    Returns:
    
    the greatest key less than or equal to key, or null if there is no such key
    
    Throws:
    
    java.lang.ClassCastException - if the specified key cannot be compared with the keys currently in the map
    
    java.lang.NullPointerException - if the specified key is null and this map does not permit null keys
  - ceilingEntry
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlyMap.Entry<K,V> ceilingEntry(K 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.
    
    Parameters:
    
    key - the key
    
    Returns:
    
    an entry with the least key greater than or equal to key, or null if there is no such key
    
    Throws:
    
    java.lang.ClassCastException - if the specified key cannot be compared with the keys currently in the map
    
    java.lang.NullPointerException - if the specified key is null and this map does not permit null keys
  - ceilingKey
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    K ceilingKey(K key)
    
    Returns the least key greater than or equal to the given key, or null if there is no such key.
    
    Parameters:
    
    key - the key
    
    Returns:
    
    the least key greater than or equal to key, or null if there is no such key
    
    Throws:
    
    java.lang.ClassCastException - if the specified key cannot be compared with the keys currently in the map
    
    java.lang.NullPointerException - if the specified key is null and this map does not permit null keys
  - higherEntry
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlyMap.Entry<K,V> higherEntry(K 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.
    
    Parameters:
    
    key - the key
    
    Returns:
    
    an entry with the least key greater than key, or null if there is no such key
    
    Throws:
    
    java.lang.ClassCastException - if the specified key cannot be compared with the keys currently in the map
    
    java.lang.NullPointerException - if the specified key is null and this map does not permit null keys
  - higherKey
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    K higherKey(K key)
    
    Returns the least key strictly greater than the given key, or null if there is no such key.
    
    Parameters:
    
    key - the key
    
    Returns:
    
    the least key greater than key, or null if there is no such key
    
    Throws:
    
    java.lang.ClassCastException - if the specified key cannot be compared with the keys currently in the map
    
    java.lang.NullPointerException - if the specified key is null and this map does not permit null keys
  - firstEntry
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlyMap.Entry<K,V> firstEntry()
    
    Returns a key-value mapping associated with the least key in this map, or null if the map is empty.
    
    Specified by:
    
    firstEntry in interface ReadOnlySequencedMap<K,V>
    
    Returns:
    
    an entry with the least key, or null if this map is empty
  - lastEntry
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlyMap.Entry<K,V> lastEntry()
    
    Returns a key-value mapping associated with the greatest key in this map, or null if the map is empty.
    
    Specified by:
    
    lastEntry in interface ReadOnlySequencedMap<K,V>
    
    Returns:
    
    an entry with the greatest key, or null if this map is empty
  - descendingMap
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlyNavigableMap<K,V> descendingMap()
    
    Returns a reverse order view of the mappings contained in this map.
    
    Returns:
    
    a reverse order view of this map
  - navigableKeySet
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlyNavigableSet<K> navigableKeySet()
    
    Returns a ReadOnlyNavigableSet view of the keys contained in this map. The set's iterator returns the keys in ascending order.
    
    Returns:
    
    a navigable set view of the keys in this map
  - descendingKeySet
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlyNavigableSet<K> descendingKeySet()
    
    Returns a reverse order ReadOnlyNavigableSet view of the keys contained in this map. The set's iterator returns the keys in descending order.
    
    Returns:
    
    a reverse order navigable set view of the keys in this map
  - subMap
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlyNavigableMap<K,V> subMap(K fromKey, boolean fromInclusive, K toKey, boolean toInclusive)
    
    Returns a view of the portion of this map whose keys range from fromKey to toKey. If fromKey and toKey are equal, the returned map is empty unless fromInclusive and toInclusive are both true.
    
    The returned map supports all optional map operations that this map supports.
    
    Parameters:
    
    fromKey - low endpoint of the keys in the returned map
    
    fromInclusive - TRUE if the low endpoint is to be included in the returned view
    
    toKey - high endpoint of the keys in the returned map
    
    toInclusive - TRUE if the high endpoint is to be included in the returned view
    
    Returns:
    
    a view of the portion of this map whose keys range from fromKey to toKey
    
    Throws:
    
    java.lang.ClassCastException - if fromKey and toKey cannot be compared to one another using this map's comparator (or, if the map has no comparator, using natural ordering). Implementations may, but are not required to, throw this exception if fromKey or toKey cannot be compared to keys currently in the map.
    
    java.lang.NullPointerException - if fromKey or toKey is null and this map does not permit null keys
    
    java.lang.IllegalArgumentException - if fromKey is greater than toKey; or if this map itself has a restricted range, and fromKey or toKey lies outside the bounds of the range
  - headMap
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlyNavigableMap<K,V> headMap(K 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. The returned map supports all optional map operations that this map supports.
    
    Parameters:
    
    toKey - high endpoint of the keys in the returned map
    
    inclusive - TRUE if the high endpoint is to be included in the returned view
    
    Returns:
    
    a view of the portion of this map whose keys are less than (or equal to, if inclusive is true) toKey
    
    Throws:
    
    java.lang.ClassCastException - if toKey is not compatible with this map's comparator (or, if the map has no comparator, if toKey does not implement Comparable). Implementations may, but are not required to, throw this exception if toKey cannot be compared to keys currently in the map.
    
    java.lang.NullPointerException - if toKey is null and this map does not permit null keys
    
    java.lang.IllegalArgumentException - if this map itself has a restricted range, and toKey lies outside the bounds of the range
  - tailMap
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlyNavigableMap<K,V> tailMap(K 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. The returned map supports all optional map operations that this map supports.
    
    Parameters:
    
    fromKey - low endpoint of the keys in the returned map
    
    inclusive - TRUE if the low endpoint is to be included in the returned view
    
    Returns:
    
    a view of the portion of this map whose keys are greater than (or equal to, if inclusive is true) fromKey
    
    Throws:
    
    java.lang.ClassCastException - if fromKey is not compatible with this map's comparator (or, if the map has no comparator, if fromKey does not implement Comparable). Implementations may, but are not required to, throw this exception if fromKey cannot be compared to keys currently in the map.
    
    java.lang.NullPointerException - if fromKey is null and this map does not permit null keys
    
    java.lang.IllegalArgumentException - if this map itself has a restricted range, and fromKey lies outside the bounds of the range
  - subMap
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlySortedMap<K,V> subMap(K fromKey, K toKey)
    
    Returns a view of the portion of this map whose keys range from fromKey, inclusive, to toKey, exclusive. (If fromKey and toKey are equal, the returned map is empty.) The returned map is backed by this map, so changes in the returned map are reflected in this map, and vice-versa. The returned map supports all optional map operations that this map supports.
    
    The returned map will throw an IllegalArgumentException on an attempt to insert a key outside its range.
    
    Equivalent to subMap(fromKey, true, toKey, false).
    
    Specified by:
    
    subMap in interface ReadOnlySortedMap<K,V>
    
    Parameters:
    
    fromKey - low endpoint (inclusive) of the keys in the returned map
    
    toKey - high endpoint (exclusive) of the keys in the returned map
    
    Returns:
    
    a view of the portion of this map whose keys range from fromKey, inclusive, to toKey, exclusive
    
    Throws:
    
    java.lang.ClassCastException - if fromKey and toKey cannot be compared to one another using this map's comparator (or, if the map has no comparator, using natural ordering). Implementations may, but are not required to, throw this exception if fromKey or toKey cannot be compared to keys currently in the map.
    
    java.lang.NullPointerException - if fromKey or toKey is null and this map does not permit null keys
    
    java.lang.IllegalArgumentException - if fromKey is greater than toKey; or if this map itself has a restricted range, and fromKey or toKey lies outside the bounds of the range
  - headMap
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlySortedMap<K,V> headMap(K toKey)
    
    Returns a view of the portion of this map whose keys are strictly less than toKey. The returned map is backed by this map, so changes in the returned map are reflected in this map, and vice-versa. The returned map supports all optional map operations that this map supports.
    
    The returned map will throw an IllegalArgumentException on an attempt to insert a key outside its range.
    
    Equivalent to headMap(toKey, false).
    
    Specified by:
    
    headMap in interface ReadOnlySortedMap<K,V>
    
    Parameters:
    
    toKey - high endpoint (exclusive) of the keys in the returned map
    
    Returns:
    
    a view of the portion of this map whose keys are strictly less than toKey
    
    Throws:
    
    java.lang.ClassCastException - if toKey is not compatible with this map's comparator (or, if the map has no comparator, if toKey does not implement Comparable). Implementations may, but are not required to, throw this exception if toKey cannot be compared to keys currently in the map.
    
    java.lang.NullPointerException - if toKey is null and this map does not permit null keys
    
    java.lang.IllegalArgumentException - if this map itself has a restricted range, and toKey lies outside the bounds of the range
  - tailMap
    
    🡅 🡇 ⇈ ⮫ 🗕 🗗 🗖
    ReadOnlySortedMap<K,V> tailMap(K fromKey)
    
    Returns a view of the portion of this map whose keys are greater than or equal to fromKey. The returned map is backed by this map, so changes in the returned map are reflected in this map, and vice-versa. The returned map supports all optional map operations that this map supports.
    
    The returned map will throw an IllegalArgumentException on an attempt to insert a key outside its range.
    
    Equivalent to tailMap(fromKey, true).
    
    Specified by:
    
    tailMap in interface ReadOnlySortedMap<K,V>
    
    Parameters:
    
    fromKey - low endpoint (inclusive) of the keys in the returned map
    
    Returns:
    
    a view of the portion of this map whose keys are greater than or equal to fromKey
    
    Throws:
    
    java.lang.ClassCastException - if fromKey is not compatible with this map's comparator (or, if the map has no comparator, if fromKey does not implement Comparable). Implementations may, but are not required to, throw this exception if fromKey cannot be compared to keys currently in the map.
    
    java.lang.NullPointerException - if fromKey is null and this map does not permit null keys
    
    java.lang.IllegalArgumentException - if this map itself has a restricted range, and fromKey lies outside the bounds of the range
  - reversed
    
    🡅 ⇈ ⮫ 🗕 🗗 🗖
    default ReadOnlyNavigableMap<K,V> reversed()
    
    Returns a reverse-ordered view of this map. The encounter order of mappings in the returned view is the inverse of the encounter order of mappings in this map. The reverse ordering affects all order-sensitive operations, including those on the view collections of the returned view.
    
    This method is equivalent to descendingMap.
    
    Specified by:
    
    reversed in interface ReadOnlySequencedMap<K,V>
    
    Specified by:
    
    reversed in interface ReadOnlySortedMap<K,V>
    
    Returns:
    
    a reverse-ordered view of this map, as a NavigableMap
    
    Code:
    
    Exact Method Body:
    
    return this.descendingMap();

Methods
Entry	ceilingEntry(K key)
K	ceilingKey(K key)
ReadOnlyNavigableSet	descendingKeySet()
ReadOnlyNavigableMap	descendingMap()
Entry	firstEntry()
Entry	floorEntry(K key)
K	floorKey(K key)
ReadOnlySortedMap	headMap(K toKey)
ReadOnlyNavigableMap	headMap(K toKey, boolean inclusive)
Entry	higherEntry(K key)
K	higherKey(K key)
Entry	lastEntry()
Entry	lowerEntry(K key)
K	lowerKey(K key)
ReadOnlyNavigableSet	navigableKeySet()
ReadOnlyNavigableMap	reversed()
ReadOnlySortedMap	subMap(K fromKey, K toKey)
ReadOnlyNavigableMap	subMap(K fromKey, boolean fromInclusive, K toKey, boolean toInclusive)
ReadOnlySortedMap	tailMap(K fromKey)
ReadOnlyNavigableMap	tailMap(K fromKey, boolean inclusive)

Interface ReadOnlyNavigableMap<K,​V>

Nested Class Summary

Nested classes/interfaces inherited from interface Torello.Java.ReadOnly.ReadOnlyMap

Method Summary

Methods inherited from interface Torello.Java.ReadOnly.ReadOnlyMap

Methods inherited from interface Torello.Java.ReadOnly.ReadOnlySequencedMap

Methods inherited from interface Torello.Java.ReadOnly.ReadOnlySortedMap

Method Detail

lowerEntry

lowerKey

floorEntry

floorKey

ceilingEntry

ceilingKey

higherEntry

higherKey

firstEntry

lastEntry

descendingMap

navigableKeySet

descendingKeySet

subMap

headMap

tailMap

subMap

headMap

tailMap

reversed

Interface ReadOnlyNavigableMap<K,V>