Class ListHashMap<K,​V>

All Implemented Interfaces:

public class ListHashMap<K,​V>
extends java.lang.Object
implements java.util.Map<K,​V>
This class represents a Map that is optimized for a small number of entries. For a number of entries up to listSize the entries are stored in arrays. After listSize entries are exceeded storage switches internally to a Map and converts back to being array based when its size is less than or equal to listSize. Null keys or values are not supported. This class is not thread safe.
  • Nested Class Summary

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

    java.util.Map.Entry<K extends java.lang.Object,​V extends java.lang.Object>
  • Constructor Summary

    Constructor Description
    ListHashMap​(int listSize)  
  • Method Summary

    Modifier and Type Method Description
    void clear()  
    boolean containsKey​(java.lang.Object key)  
    boolean containsValue​(java.lang.Object value)  
    java.util.Set<java.util.Map.Entry<K,​V>> entrySet()  
    V get​(java.lang.Object key)  
    boolean isEmpty()  
    java.util.Set<K> keySet()  
    V put​(K key, V value)  
    void putAll​(java.util.Map<? extends K,​? extends V> m)  
    V remove​(java.lang.Object key)  
    int size()  
    java.util.Collection<V> values()  

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    Methods inherited from interface java.util.Map

    compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll
  • Constructor Details

    • ListHashMap

      public ListHashMap()
    • ListHashMap

      public ListHashMap​(int listSize)
  • Method Details

    • clear

      public void clear()
      Specified by:
      clear in interface java.util.Map<K,​V>
    • containsKey

      public boolean containsKey​(java.lang.Object key)
      Specified by:
      containsKey in interface java.util.Map<K,​V>
    • containsValue

      public boolean containsValue​(java.lang.Object value)
      Specified by:
      containsValue in interface java.util.Map<K,​V>
    • entrySet

      public java.util.Set<java.util.Map.Entry<K,​V>> entrySet()
      Specified by:
      entrySet in interface java.util.Map<K,​V>
    • get

      public V get​(java.lang.Object key)
      Specified by:
      get in interface java.util.Map<K,​V>
    • isEmpty

      public boolean isEmpty()
      Specified by:
      isEmpty in interface java.util.Map<K,​V>
    • keySet

      public java.util.Set<K> keySet()
      Specified by:
      keySet in interface java.util.Map<K,​V>
    • put

      public V put​(K key, V value)
      Specified by:
      put in interface java.util.Map<K,​V>
    • putAll

      public void putAll​(java.util.Map<? extends K,​? extends V> m)
      Specified by:
      putAll in interface java.util.Map<K,​V>
    • remove

      public V remove​(java.lang.Object key)
      Specified by:
      remove in interface java.util.Map<K,​V>
    • size

      public int size()
      Specified by:
      size in interface java.util.Map<K,​V>
    • values

      public java.util.Collection<V> values()
      Specified by:
      values in interface java.util.Map<K,​V>