Class ArrayMap<K,​V>

  • All Implemented Interfaces:
    java.util.Map<K,​V>
    Direct Known Subclasses:
    HopscotchHashMap

    public abstract class ArrayMap<K,​V>
    extends java.util.AbstractMap<K,​V>
    Base for classes that implement hash map by storing keys in one array and values in another. It assumes that all keys that are in the array are contained in the map and that values are on corresponding indices in the map. Does not support null keys nor values. Forces implementation of methods get(Object), put(Object, Object), remove(Object)
    • Nested Class Summary

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

        java.util.AbstractMap.SimpleEntry<K extends java.lang.Object,​V extends java.lang.Object>, java.util.AbstractMap.SimpleImmutableEntry<K extends java.lang.Object,​V extends java.lang.Object>
      • Nested classes/interfaces inherited from interface java.util.Map

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

      Fields 
      Modifier and Type Field Description
      protected java.lang.Object[] keys  
      protected int modCount  
      protected int size  
      protected java.lang.Object[] values  
    • Constructor Summary

      Constructors 
      Constructor Description
      ArrayMap()  
    • Method Summary

      All Methods Instance Methods Abstract Methods Concrete Methods 
      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()  
      abstract V get​(java.lang.Object key)  
      java.util.Set<K> keySet()  
      abstract V put​(K key, V value)  
      abstract V remove​(java.lang.Object key)  
      int size()  
      java.util.Collection<V> values()  
      • Methods inherited from class java.util.AbstractMap

        clone, equals, hashCode, isEmpty, putAll, toString
      • Methods inherited from class java.lang.Object

        finalize, getClass, notify, notifyAll, wait, wait, wait
      • Methods inherited from interface java.util.Map

        compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll
    • Field Detail

      • size

        protected int size
      • keys

        protected java.lang.Object[] keys
      • values

        protected java.lang.Object[] values
      • modCount

        protected int modCount
    • Constructor Detail

      • ArrayMap

        public ArrayMap()
    • Method Detail

      • get

        public abstract V get​(java.lang.Object key)
        Specified by:
        get in interface java.util.Map<K,​V>
        Overrides:
        get in class java.util.AbstractMap<K,​V>
      • put

        public abstract V put​(K key,
                              V value)
        Specified by:
        put in interface java.util.Map<K,​V>
        Overrides:
        put in class java.util.AbstractMap<K,​V>
      • remove

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

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

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

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

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

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

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

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