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 Details

  - ### 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 Details

  - ### 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>`