ucar.nc2.util
Class HashMapLRU

java.lang.Object
  extended by java.util.AbstractMap<K,V>
      extended by java.util.HashMap<K,V>
          extended by java.util.LinkedHashMap
              extended by ucar.nc2.util.HashMapLRU
All Implemented Interfaces:
java.io.Serializable, java.lang.Cloneable, java.util.Map

public class HashMapLRU
extends java.util.LinkedHashMap

A HashMap that removes the oldest member when it exceeds the maximum number of entries.

Author:
caron
See Also:
LinkedHashMap, Serialized Form

Nested Class Summary
 
Nested classes/interfaces inherited from class java.util.AbstractMap
java.util.AbstractMap.SimpleEntry<K,V>, java.util.AbstractMap.SimpleImmutableEntry<K,V>
 
Constructor Summary
HashMapLRU(int initialCapacity, int max_entries)
          Constructor.
 
Method Summary
 
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
getClass, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface java.util.Map
containsKey, entrySet, equals, hashCode, isEmpty, keySet, put, putAll, remove, size, values
 

Constructor Detail

HashMapLRU

public HashMapLRU(int initialCapacity,
                  int max_entries)
Constructor.

Parameters:
initialCapacity - start with this size
max_entries - dont exceed this number of entries.