org.codehaus.jackson.map.util

## Class LRUMap<K,V>

- java.lang.Object
- - java.util.AbstractMap<K,V>
  - - java.util.HashMap<K,V>
    - - java.util.LinkedHashMap<K,V>
      - - org.codehaus.jackson.map.util.LRUMap<K,V>

- All Implemented Interfaces:
    Serializable, Cloneable, Map<K,V>

      public class LRUMap<K,V>
      extends LinkedHashMap<K,V>

  Helper for simple bounded LRU maps used for reusing lookup values.
  Since:
    1.7
  See Also:
    Serialized Form

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class java.util.AbstractMap

      `AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>`

  - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected int` | `_maxEntries`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `LRUMap(int initialEntries, int maxEntries)`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected boolean` | `removeEldestEntry(Map.Entry<K,V> eldest)`

    - ### Methods inherited from class java.util.LinkedHashMap

      `clear, containsValue, get`

    - ### Methods inherited from class java.util.HashMap

      `clone, containsKey, entrySet, isEmpty, keySet, put, putAll, remove, size, values`

    - ### Methods inherited from class java.util.AbstractMap

      `equals, hashCode, toString`

    - ### Methods inherited from class java.lang.Object

      `finalize, getClass, notify, notifyAll, wait, wait, wait`

    - ### Methods inherited from interface java.util.Map

      `containsKey, entrySet, equals, hashCode, isEmpty, keySet, put, putAll, remove, size, values`

- - ### Field Detail

    - #### _maxEntries

          protected final int _maxEntries

  - ### Constructor Detail

    - #### LRUMap

          public LRUMap(int initialEntries,
                int maxEntries)

  - ### Method Detail

    - #### removeEldestEntry

          protected boolean removeEldestEntry(Map.Entry<K,V> eldest)

      Overrides:
        `removeEldestEntry` in class `LinkedHashMap<K,V>`