LinkedHashtable (Apache Ant API)

Package org.apache.tools.ant.util

## Class LinkedHashtable<K,​V>

- java.lang.Object
- - java.util.Dictionary<K,​V>
  - - java.util.Hashtable<K,​V>
    - - org.apache.tools.ant.util.LinkedHashtable<K,​V>

- All Implemented Interfaces:
    `java.io.Serializable`, `java.lang.Cloneable`, `java.util.Map<K,​V>`

      public class LinkedHashtable<K,​V>
      extends java.util.Hashtable<K,​V>

  Subclass of Hashtable that wraps a LinkedHashMap to provide predictable iteration order.

  This is not a general purpose class but has been written because the protected members of `Copy` prohibited later revisions from using a more predictable collection.

  Methods are synchronized to keep Hashtable's contract.

  Since:
    Ant 1.8.2
  See Also:
    Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `LinkedHashtable()` |
    `LinkedHashtable​(int initialCapacity)` |
    `LinkedHashtable​(int initialCapacity, float loadFactor)` |
    `LinkedHashtable​(java.util.Map<K,​V> m)` |

  - ### Method Summary

    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `clear()` |
    `boolean` | `contains​(java.lang.Object value)` |
    `boolean` | `containsKey​(java.lang.Object value)` |
    `boolean` | `containsValue​(java.lang.Object value)` |
    `java.util.Enumeration<V>` | `elements()` |
    `java.util.Set<java.util.Map.Entry<K,​V>>` | `entrySet()` |
    `boolean` | `equals​(java.lang.Object o)` |
    `V` | `get​(java.lang.Object k)` |
    `int` | `hashCode()` |
    `boolean` | `isEmpty()` |
    `java.util.Enumeration<K>` | `keys()` |
    `java.util.Set<K>` | `keySet()` |
    `V` | `put​(K k, V v)` |
    `void` | `putAll​(java.util.Map<? extends K,​? extends V> m)` |
    `V` | `remove​(java.lang.Object k)` |
    `int` | `size()` |
    `java.lang.String` | `toString()` |
    `java.util.Collection<V>` | `values()` |

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

      `clone, compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, rehash, remove, replace, replace, replaceAll`

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

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

- - ### Constructor Detail

    - #### LinkedHashtable

          public LinkedHashtable()

    - #### LinkedHashtable

          public LinkedHashtable​(int initialCapacity)

    - #### LinkedHashtable

          public LinkedHashtable​(int initialCapacity,
                                 float loadFactor)

    - #### LinkedHashtable

          public LinkedHashtable​(java.util.Map<K,​V> m)

  - ### Method Detail

    - #### clear

          public void clear()

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

    - #### contains

          public boolean contains​(java.lang.Object value)

      Overrides:
        `contains` in class `java.util.Hashtable<K,​V>`

    - #### containsKey

          public boolean containsKey​(java.lang.Object value)

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

    - #### elements

          public java.util.Enumeration<V> elements()

      Overrides:
        `elements` in class `java.util.Hashtable<K,​V>`

    - #### entrySet

          public java.util.Set<java.util.Map.Entry<K,​V>> entrySet()

      Specified by:
        `entrySet` in interface `java.util.Map<K,​V>`
      Overrides:
        `entrySet` in class `java.util.Hashtable<K,​V>`

    - #### equals

          public boolean equals​(java.lang.Object o)

      Specified by:
        `equals` in interface `java.util.Map<K,​V>`
      Overrides:
        `equals` in class `java.util.Hashtable<K,​V>`

    - #### get

          public V get​(java.lang.Object k)

      Specified by:
        `get` in interface `java.util.Map<K,​V>`
      Overrides:
        `get` in class `java.util.Hashtable<K,​V>`

    - #### hashCode

          public int hashCode()

      Specified by:
        `hashCode` in interface `java.util.Map<K,​V>`
      Overrides:
        `hashCode` in class `java.util.Hashtable<K,​V>`

    - #### isEmpty

          public boolean isEmpty()

      Specified by:
        `isEmpty` in interface `java.util.Map<K,​V>`
      Overrides:
        `isEmpty` in class `java.util.Hashtable<K,​V>`

    - #### keys

          public java.util.Enumeration<K> keys()

      Overrides:
        `keys` in class `java.util.Hashtable<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.Hashtable<K,​V>`

    - #### put

          public V put​(K k,
                       V v)

      Specified by:
        `put` in interface `java.util.Map<K,​V>`
      Overrides:
        `put` in class `java.util.Hashtable<K,​V>`

    - #### putAll

          public void putAll​(java.util.Map<? extends K,​? extends V> m)

      Specified by:
        `putAll` in interface `java.util.Map<K,​V>`
      Overrides:
        `putAll` in class `java.util.Hashtable<K,​V>`

    - #### remove

          public V remove​(java.lang.Object k)

      Specified by:
        `remove` in interface `java.util.Map<K,​V>`
      Overrides:
        `remove` in class `java.util.Hashtable<K,​V>`

    - #### size

          public int size()

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

    - #### toString

          public java.lang.String toString()

      Overrides:
        `toString` in class `java.util.Hashtable<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.Hashtable<K,​V>`