程序包 com.sh.util

类 AbstractMap.SimpleImmutableEntry<K,V>

java.lang.Object
com.sh.util.AbstractMap.SimpleImmutableEntry<K,V>
所有已实现的接口:
Serializable, Map.Entry<K,V>
封闭类:
AbstractMap<K,V>
public static class AbstractMap.SimpleImmutableEntry<K,V> extends Object implements Map.Entry<K,V>, Serializable
An Entry maintaining an immutable key and value. This class does not support method setValue. This class may be convenient in methods that return thread-safe snapshots of key-value mappings.
从以下版本开始:
1.6
另请参阅:

  • 构造器概要

    构造器
    构造器
    说明
    SimpleImmutableEntry(Map.Entry<? extends K,? extends V> entry)
    Creates an entry representing the same mapping as the specified entry.
    SimpleImmutableEntry(K key, V value)
    Creates an entry representing a mapping from the specified key to the specified value.

  • 方法概要

    修饰符和类型
    方法
    说明
    boolean
    equals(Object o)
    Compares the specified object with this entry for equality.
    K
    getKey()
    Returns the key corresponding to this entry.
    V
    getValue()
    Returns the value corresponding to this entry.
    int
    hashCode()
    Returns the hash code value for this map entry.
    V
    setValue(V value)
    Replaces the value corresponding to this entry with the specified value (optional operation).
    String
    toString()
    Returns a String representation of this map entry.

    从类继承的方法 java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

  • 构造器详细资料

    • SimpleImmutableEntry

      public SimpleImmutableEntry(K key, V value)
      Creates an entry representing a mapping from the specified key to the specified value.
      参数:
      key - the key represented by this entry
      value - the value represented by this entry

    • SimpleImmutableEntry

      public SimpleImmutableEntry(Map.Entry<? extends K,? extends V> entry)
      Creates an entry representing the same mapping as the specified entry.
      参数:
      entry - the entry to copy

  • 方法详细资料

    • getKey

      public K getKey()
      Returns the key corresponding to this entry.
      指定者:
      getKey 在接口中 Map.Entry<K,V>
      返回:
      the key corresponding to this entry

    • getValue

      public V getValue()
      Returns the value corresponding to this entry.
      指定者:
      getValue 在接口中 Map.Entry<K,V>
      返回:
      the value corresponding to this entry

    • setValue

      public V setValue(V value)
      Replaces the value corresponding to this entry with the specified value (optional operation). This implementation simply throws UnsupportedOperationException, as this class implements an immutable map entry.
      指定者:
      setValue 在接口中 Map.Entry<K,V>
      参数:
      value - new value to be stored in this entry
      返回:
      (Does not return)
      抛出:
      UnsupportedOperationException - always

    • equals

      public boolean equals(Object o)
      Compares the specified object with this entry for equality. Returns true if the given object is also a map entry and the two entries represent the same mapping. More formally, two entries e1 and e2 represent the same mapping if
         (e1.getKey()==null ?
    e2.getKey()==null :
    e1.getKey().equals(e2.getKey()))
   &&
   (e1.getValue()==null ?
    e2.getValue()==null :
    e1.getValue().equals(e2.getValue()))
      This ensures that the equals method works properly across different implementations of the Map.Entry interface.
      指定者:
      equals 在接口中 Map.Entry<K,V>
      覆盖:
      equals 在类中 Object
      参数:
      o - object to be compared for equality with this map entry
      返回:
      true if the specified object is equal to this map entry
      另请参阅:

    • hashCode

      public int hashCode()
      Returns the hash code value for this map entry. The hash code of a map entry e is defined to be: 
         (e.getKey()==null   ? 0 : e.getKey().hashCode()) ^
   (e.getValue()==null ? 0 : e.getValue().hashCode())
      This ensures that e1.equals(e2) implies that e1.hashCode()==e2.hashCode() for any two Entries e1 and e2, as required by the general contract of Object.hashCode().
      指定者:
      hashCode 在接口中 Map.Entry<K,V>
      覆盖:
      hashCode 在类中 Object
      返回:
      the hash code value for this map entry
      另请参阅:

    • toString

      public String toString()
      Returns a String representation of this map entry. This implementation returns the string representation of this entry's key followed by the equals character ("=") followed by the string representation of this entry's value.
      覆盖:
      toString 在类中 Object
      返回:
      a String representation of this map entry