TimedHashMap (IcedTea-Web: NetX )
Keywords: net.sourceforge.jnlp.util.TimedHashMap class
Date: 2021-05-10

net.sourceforge.jnlp.util

## Class TimedHashMap<K,V>

- java.lang.Object
- - net.sourceforge.jnlp.util.TimedHashMap<K,V>

- All Implemented Interfaces:
    java.util.Map<K,V>

      public class TimedHashMap<K,V>
      extends java.lang.Object
      implements java.util.Map<K,V>

  Simple utility class that extends HashMap by adding an expiry to the entries. This map stores entries, and returns them only if the entries were last accessed within a specified timeout period. Otherwise, null is returned. This map does not allow null keys but does allow null values.

- - ### Nested Class Summary

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

      `java.util.Map.Entry<K,V>`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `TimedHashMap()`
    `TimedHashMap(long timeout, java.util.concurrent.TimeUnit unit)` Create a new map with a non-default entry timeout period

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and 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)` Return cached item if it has not already expired.
    `boolean` | `isEmpty()`
    `java.util.Set<K>` | `keySet()`
    `V` | `put(K key, V value)` Store the item in the map and associate a timestamp with it.
    `void` | `putAll(java.util.Map<? extends K,? extends V> m)`
    `V` | `remove(java.lang.Object key)`
    `void` | `setTimeout(long timeout, java.util.concurrent.TimeUnit unit)` Specify how long (in nanoseconds) entries are valid for
    `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 Detail

    - #### TimedHashMap

          public TimedHashMap()

    - #### TimedHashMap

          public TimedHashMap(long timeout,
                              java.util.concurrent.TimeUnit unit)

      Create a new map with a non-default entry timeout period
      Parameters:
        `unit` - the units of the timeout
        `timeout` - the length of the timeout

  - ### Method Detail

    - #### setTimeout

          public void setTimeout(long timeout,
                                 java.util.concurrent.TimeUnit unit)

      Specify how long (in nanoseconds) entries are valid for
      Parameters:
        `unit` - the units of the timeout
        `timeout` - the length of the timeout

    - #### put

          public V put(K key,
                       V value)

      Store the item in the map and associate a timestamp with it. null is not accepted as a key.
      Specified by:
        `put` in interface `java.util.Map<K,V>`
      Parameters:
        `key` - The key
        `value` - The value to store

    - #### get

          public V get(java.lang.Object key)

      Return cached item if it has not already expired. Before returning, this method also resets the "last accessed" time for this entry, so it is good for another 10 seconds
      Specified by:
        `get` in interface `java.util.Map<K,V>`
      Parameters:
        `key` - The key

    - #### containsKey

          public boolean containsKey(java.lang.Object key)

      Specified by:
        `containsKey` in interface `java.util.Map<K,V>`

    - #### size

          public int size()

      Specified by:
        `size` in interface `java.util.Map<K,V>`

    - #### isEmpty

          public boolean isEmpty()

      Specified by:
        `isEmpty` 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>`

    - #### remove

          public V remove(java.lang.Object key)

      Specified by:
        `remove` 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>`

    - #### clear

          public void clear()

      Specified by:
        `clear` in interface `java.util.Map<K,V>`

    - #### keySet

          public java.util.Set<K> keySet()

      Specified by:
        `keySet` in interface `java.util.Map<K,V>`

    - #### values

          public java.util.Collection<V> values()

      Specified by:
        `values` 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>`

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