Uses of Interface java.util.Map.Entry (Java SE 26 & JDK 26)
Description: use: module: java.base, package: java.util, interface: Map, interface: Entry

# Uses of Interface
java.util.Map.Entry

Packages that use Map.Entry
Package
Description
com.sun.net.httpserver
Provides a simple high-level Http server API, which can be used to build embedded HTTP servers.
java.awt
Contains all of the classes for creating user interfaces and for painting graphics and images.
java.security
Provides the classes and interfaces for the security framework.
java.util
Contains the collections framework, some internationalization support classes, a service loader, properties, random number generation, string parsing and scanning classes, base64 encoding and decoding, a bit array, and several miscellaneous utility classes.
java.util.concurrent
Utility classes commonly useful in concurrent programming.
java.util.jar
Provides classes for reading and writing the JAR (Java ARchive) file format, which is based on the standard ZIP file format with an optional manifest file.
javax.management.openmbean
Provides the open data types and Open MBean descriptor classes.
javax.script
The scripting API consists of interfaces and classes that define Java Scripting Engines and provides a framework for their use in Java applications.
javax.xml.crypto.dom
DOM-specific classes for the `javax.xml.crypto` package.

- ## Uses of Map.Entry in com.sun.net.httpserver

  Methods in com.sun.net.httpserver that return types with arguments of type Map.Entry
  Modifier and Type
  Method
  Description
  `Set<Map.Entry<String, List<String>>>`
  Headers.`entrySet()`

- ## Uses of Map.Entry in java.awt

  Methods in java.awt that return types with arguments of type Map.Entry
  Modifier and Type
  Method
  Description
  `Set<Map.Entry<Object,Object>>`
  RenderingHints.`entrySet()`
  Returns a `Set` view of the mappings contained in this `RenderingHints`.

- ## Uses of Map.Entry in java.security

  Methods in java.security that return types with arguments of type Map.Entry
  Modifier and Type
  Method
  Description
  `Set<Map.Entry<Object,Object>>`
  Provider.`entrySet()`
  Returns an unmodifiable Set view of the property entries contained in this `Provider`.

- ## Uses of Map.Entry in java.util

  Classes in java.util that implement Map.Entry
  Modifier and Type
  Class
  Description
  `static class`
  `AbstractMap.SimpleEntry<K,V>`
  An Entry maintaining a key and a value.
  `static class`
  `AbstractMap.SimpleImmutableEntry<K,V>`
  An unmodifiable Entry maintaining a key and a value.
  Methods in java.util that return Map.Entry
  Modifier and Type
  Method
  Description
  `Map.Entry<K,V>`
  NavigableMap.`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.
  `Map.Entry<K,V>`
  TreeMap.`ceilingEntry(K key)`
  `static <K,V> Map.Entry<K,V>`
  Map.Entry.`copyOf(Map.Entry<? extends K, ? extends V> e)`
  Returns a copy of the given `Map.Entry`.
  `static <K,V> Map.Entry<K,V>`
  Map.`entry(K k, V v)`
  Returns an unmodifiable `Map.Entry` containing the given key and value.
  `Map.Entry<K,V>`
  NavigableMap.`firstEntry()`
  Returns a key-value mapping associated with the least key in this map, or `null` if the map is empty.
  `default Map.Entry<K,V>`
  SequencedMap.`firstEntry()`
  Returns the first key-value mapping in this map, or `null` if the map is empty.
  `Map.Entry<K,V>`
  TreeMap.`firstEntry()`
  `Map.Entry<K,V>`
  NavigableMap.`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.
  `Map.Entry<K,V>`
  TreeMap.`floorEntry(K key)`
  `Map.Entry<K,V>`
  NavigableMap.`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.
  `Map.Entry<K,V>`
  TreeMap.`higherEntry(K key)`
  `Map.Entry<K,V>`
  NavigableMap.`lastEntry()`
  Returns a key-value mapping associated with the greatest key in this map, or `null` if the map is empty.
  `default Map.Entry<K,V>`
  SequencedMap.`lastEntry()`
  Returns the last key-value mapping in this map, or `null` if the map is empty.
  `Map.Entry<K,V>`
  TreeMap.`lastEntry()`
  `Map.Entry<K,V>`
  NavigableMap.`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.
  `Map.Entry<K,V>`
  TreeMap.`lowerEntry(K key)`
  `Map.Entry<K,V>`
  NavigableMap.`pollFirstEntry()`
  Removes and returns a key-value mapping associated with the least key in this map, or `null` if the map is empty (optional operation).
  `default Map.Entry<K,V>`
  SequencedMap.`pollFirstEntry()`
  Removes and returns the first key-value mapping in this map, or `null` if the map is empty (optional operation).
  `Map.Entry<K,V>`
  TreeMap.`pollFirstEntry()`
  `Map.Entry<K,V>`
  NavigableMap.`pollLastEntry()`
  Removes and returns a key-value mapping associated with the greatest key in this map, or `null` if the map is empty (optional operation).
  `default Map.Entry<K,V>`
  SequencedMap.`pollLastEntry()`
  Removes and returns the last key-value mapping in this map, or `null` if the map is empty (optional operation).
  `Map.Entry<K,V>`
  TreeMap.`pollLastEntry()`
  Methods in java.util that return types with arguments of type Map.Entry
  Modifier and Type
  Method
  Description
  `static <K extends Comparable<? super K>, V>
  Comparator<Map.Entry<K,V>>`
  Map.Entry.`comparingByKey()`
  Returns a comparator that compares `Map.Entry` in natural order on key.
  `static <K,V> Comparator<Map.Entry<K,V>>`
  Map.Entry.`comparingByKey(Comparator<? super K> cmp)`
  Returns a comparator that compares `Map.Entry` by key using the given `Comparator`.
  `static <K, V extends Comparable<? super V>>
  Comparator<Map.Entry<K,V>>`
  Map.Entry.`comparingByValue()`
  Returns a comparator that compares `Map.Entry` in natural order on value.
  `static <K,V> Comparator<Map.Entry<K,V>>`
  Map.Entry.`comparingByValue(Comparator<? super V> cmp)`
  Returns a comparator that compares `Map.Entry` by value using the given `Comparator`.
  `Set<Map.Entry<K,V>>`
  EnumMap.`entrySet()`
  Returns a `Set` view of the mappings contained in this map.
  `Set<Map.Entry<K,V>>`
  HashMap.`entrySet()`
  Returns a `Set` view of the mappings contained in this map.
  `Set<Map.Entry<K,V>>`
  Hashtable.`entrySet()`
  Returns a `Set` view of the mappings contained in this map.
  `Set<Map.Entry<K,V>>`
  IdentityHashMap.`entrySet()`
  Returns a `Set` view of the mappings contained in this map.
  `Set<Map.Entry<K,V>>`
  LinkedHashMap.`entrySet()`
  Returns a `Set` view of the mappings contained in this map.
  `Set<Map.Entry<K,V>>`
  Map.`entrySet()`
  Returns a `Set` view of the mappings contained in this map.
  `Set<Map.Entry<K,V>>`
  SortedMap.`entrySet()`
  Returns a `Set` view of the mappings contained in this map.
  `Set<Map.Entry<K,V>>`
  TreeMap.`entrySet()`
  Returns a `Set` view of the mappings contained in this map.
  `Set<Map.Entry<K,V>>`
  WeakHashMap.`entrySet()`
  Returns a `Set` view of the mappings contained in this map.
  `SequencedSet<Map.Entry<K,V>>`
  LinkedHashMap.`sequencedEntrySet()`
  Returns a `SequencedSet` view of this map's `entrySet`.
  `default SequencedSet<Map.Entry<K,V>>`
  SequencedMap.`sequencedEntrySet()`
  Returns a `SequencedSet` view of this map's `entrySet`.
  Methods in java.util with parameters of type Map.Entry
  Modifier and Type
  Method
  Description
  `static <K,V> Map.Entry<K,V>`
  Map.Entry.`copyOf(Map.Entry<? extends K, ? extends V> e)`
  Returns a copy of the given `Map.Entry`.
  `static <K,V> Map<K,V>`
  Map.`ofEntries(Map.Entry<? extends K, ? extends V>... entries)`
  Returns an unmodifiable map containing keys and values extracted from the given entries.
  `protected boolean`
  LinkedHashMap.`removeEldestEntry(Map.Entry<K,V> eldest)`
  Returns `true` if this map should remove its eldest entry.
  Constructors in java.util with parameters of type Map.Entry
  Modifier
  Constructor
  Description
  ``
  `SimpleEntry(Map.Entry<? extends K, ? extends V> entry)`
  Creates an entry representing the same mapping as the specified entry.
  ``
  `SimpleImmutableEntry(Map.Entry<? extends K, ? extends V> entry)`
  Creates an entry representing the same mapping as the specified entry.

- ## Uses of Map.Entry in java.util.concurrent

  Methods in java.util.concurrent that return Map.Entry
  Modifier and Type
  Method
  Description
  `Map.Entry<K,V>`
  ConcurrentSkipListMap.`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 entry.
  `Map.Entry<K,V>`
  ConcurrentSkipListMap.`firstEntry()`
  Returns a key-value mapping associated with the least key in this map, or `null` if the map is empty.
  `Map.Entry<K,V>`
  ConcurrentSkipListMap.`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.
  `Map.Entry<K,V>`
  ConcurrentSkipListMap.`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.
  `Map.Entry<K,V>`
  ConcurrentSkipListMap.`lastEntry()`
  Returns a key-value mapping associated with the greatest key in this map, or `null` if the map is empty.
  `Map.Entry<K,V>`
  ConcurrentSkipListMap.`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.
  `Map.Entry<K,V>`
  ConcurrentSkipListMap.`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<K,V>`
  ConcurrentSkipListMap.`pollLastEntry()`
  Removes and returns a key-value mapping associated with the greatest key in this map, or `null` if the map is empty.
  `Map.Entry<K,V>`
  ConcurrentHashMap.`reduceEntries(long parallelismThreshold, BiFunction<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer)`
  Returns the result of bulk accumulating all entries using the given reducer to combine values, or null if none.
  Methods in java.util.concurrent that return types with arguments of type Map.Entry
  Modifier and Type
  Method
  Description
  `Set<Map.Entry<K,V>>`
  ConcurrentHashMap.`entrySet()`
  Returns a `Set` view of the mappings contained in this map.
  `Set<Map.Entry<K,V>>`
  ConcurrentSkipListMap.`entrySet()`
  Returns a `Set` view of the mappings contained in this map.
  Method parameters in java.util.concurrent with type arguments of type Map.Entry
  Modifier and Type
  Method
  Description
  `void`
  ConcurrentHashMap.`forEachEntry(long parallelismThreshold, Consumer<? super Map.Entry<K,V>> action)`
  Performs the given bulk action for each entry.
  `<U> void`
  ConcurrentHashMap.`forEachEntry(long parallelismThreshold, Function<Map.Entry<K,V>, ? extends U> transformer, Consumer<? super U> action)`
  Performs the given bulk action for each non-null transformation of each entry.
  `Map.Entry<K,V>`
  ConcurrentHashMap.`reduceEntries(long parallelismThreshold, BiFunction<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer)`
  Returns the result of bulk accumulating all entries using the given reducer to combine values, or null if none.
  `Map.Entry<K,V>`
  ConcurrentHashMap.`reduceEntries(long parallelismThreshold, BiFunction<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer)`
  Returns the result of bulk accumulating all entries using the given reducer to combine values, or null if none.
  `Map.Entry<K,V>`
  ConcurrentHashMap.`reduceEntries(long parallelismThreshold, BiFunction<Map.Entry<K,V>, Map.Entry<K,V>, ? extends Map.Entry<K,V>> reducer)`
  Returns the result of bulk accumulating all entries using the given reducer to combine values, or null if none.
  `<U> U`
  ConcurrentHashMap.`reduceEntries(long parallelismThreshold, Function<Map.Entry<K,V>, ? extends U> transformer, BiFunction<? super U, ? super U, ? extends U> reducer)`
  Returns the result of bulk accumulating the given transformation of all entries using the given reducer to combine values, or null if none.
  `double`
  ConcurrentHashMap.`reduceEntriesToDouble(long parallelismThreshold, ToDoubleFunction<Map.Entry<K,V>> transformer, double basis, DoubleBinaryOperator reducer)`
  Returns the result of bulk accumulating the given transformation of all entries using the given reducer to combine values, and the given basis as an identity value.
  `int`
  ConcurrentHashMap.`reduceEntriesToInt(long parallelismThreshold, ToIntFunction<Map.Entry<K,V>> transformer, int basis, IntBinaryOperator reducer)`
  Returns the result of bulk accumulating the given transformation of all entries using the given reducer to combine values, and the given basis as an identity value.
  `long`
  ConcurrentHashMap.`reduceEntriesToLong(long parallelismThreshold, ToLongFunction<Map.Entry<K,V>> transformer, long basis, LongBinaryOperator reducer)`
  Returns the result of bulk accumulating the given transformation of all entries using the given reducer to combine values, and the given basis as an identity value.
  `<U> U`
  ConcurrentHashMap.`searchEntries(long parallelismThreshold, Function<Map.Entry<K,V>, ? extends U> searchFunction)`
  Returns a non-null result from bulk applying the given search function on each entry, or null if none.

- ## Uses of Map.Entry in java.util.jar

  Methods in java.util.jar that return types with arguments of type Map.Entry
  Modifier and Type
  Method
  Description
  `Set<Map.Entry<Object,Object>>`
  Attributes.`entrySet()`
  Returns a Collection view of the attribute name-value mappings contained in this Map.

- ## Uses of Map.Entry in javax.management.openmbean

  Methods in javax.management.openmbean that return types with arguments of type Map.Entry
  Modifier and Type
  Method
  Description
  `Set<Map.Entry<Object,Object>>`
  TabularDataSupport.`entrySet()`
  Returns a collection view of the index to row mappings contained in this `TabularDataSupport` instance.

- ## Uses of Map.Entry in javax.script

  Methods in javax.script that return types with arguments of type Map.Entry
  Modifier and Type
  Method
  Description
  `Set<Map.Entry<String,Object>>`
  SimpleBindings.`entrySet()`
  Returns a `Set` view of the mappings contained in this map.

- ## Uses of Map.Entry in javax.xml.crypto.dom

  Methods in javax.xml.crypto.dom that return types with arguments of type Map.Entry
  Modifier and Type
  Method
  Description
  `Iterator<Map.Entry<String,Element>>`
  DOMCryptoContext.`iterator()`
  Returns a read-only iterator over the set of Id/Element mappings of this `DOMCryptoContext`.