# Class AbstractMap.SimpleEntry<K,V>

java.lang.Object
java.util.AbstractMap.SimpleEntry<K,V>

All Implemented Interfaces:
  `Map.Entry<K,V>`

Enclosing class:
  `AbstractMap<K,V>`

public static class AbstractMap.SimpleEntry<K,V> extends Object implements Map.Entry<K,V>

A key-value mapping.

Type parameter `K`: the type of key Type parameter `V`: the type of value

##### Since

1.6

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `SimpleEntry(Map.Entry<? extends K, ? extends V> entry)`
  Constructs a new instance by an entry
  `SimpleEntry(K theKey, V theValue)`
  Constructs a new instance by key and value.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `boolean`
  `equals(Object object)`
  Answers whether the object is equal to this entry.
  `K`
  `getKey()`
  Returns the key.
  `V`
  `getValue()`
  Returns the value.
  `int`
  `hashCode()`
  Answers the hash code of this entry.
  `V`
  `setValue(V object)`
  Sets the value of this entry to the specified value, replacing any existing value.
  `String`
  `toString()`
  Answers a String representation of this entry.

  ### Methods inherited from class Object

  `clone, getClass, notify, notifyAll, wait, wait, wait`

- ## Constructor Details

  - ### SimpleEntry

    public SimpleEntry(K theKey, V theValue)

    Constructs a new instance by key and value.

    ###### Parameters

    - `theKey`: the key

    - `theValue`: the value

  - ### SimpleEntry

    public SimpleEntry(Map.Entry<? extends K, ? extends V> entry)

    Constructs a new instance by an entry

    ###### Parameters

    - `entry`: the entry

- ## Method Details

  - ### getKey

    public K getKey()

    Returns the key.

    ###### Returns

    the key

    ###### See also

    - java.util.Map.Entry#getKey()
    Specified by:
      `getKey` in interface `Map.Entry<K,V>`

  - ### getValue

    public V getValue()

    Returns the value.

    ###### Returns

    the value

    ###### See also

    - java.util.Map.Entry#getValue()
    Specified by:
      `getValue` in interface `Map.Entry<K,V>`

  - ### setValue

    public V setValue(V object)

    Sets the value of this entry to the specified value, replacing any existing value.

    ###### Parameters

    - `object`: the new value to set.

    ###### Returns

    object the replaced value of this entry.

    ###### See also

    - java.util.Map.Entry#setValue(java.lang.Object)
    Specified by:
      `setValue` in interface `Map.Entry<K,V>`

  - ### equals

    public boolean equals(Object object)

    Answers whether the object is equal to this entry. This works across all kinds of the Map.Entry interface.

    ###### See also

    - java.lang.Object#equals(java.lang.Object)
    Specified by:
      `equals` in interface `Map.Entry<K,V>`
    Overrides:
      `equals` in class `Object`
    Returns:

      `true` if the specified `Object` is equal to this `Map.Entry`, `false` otherwise.

      ###### See also

      - #hashCode()

  - ### hashCode

    public int hashCode()

    Answers the hash code of this entry.

    ###### See also

    - java.lang.Object#hashCode()
    Specified by:
      `hashCode` in interface `Map.Entry<K,V>`
    Overrides:
      `hashCode` in class `Object`

  - ### toString

    public String toString()

    Answers a String representation of this entry.

    ###### See also

    - java.lang.Object#toString()
    Overrides:
      `toString` in class `Object`