Class UnmodifiableMapEntry<K,​V>

  • Type Parameters:
    K - the type of keys
    V - the type of mapped values
    All Implemented Interfaces:
    java.util.Map.Entry<K,​V>, KeyValue<K,​V>, Unmodifiable

    public final class UnmodifiableMapEntry<K,​V>
    extends AbstractMapEntry<K,​V>
    implements Unmodifiable
    A Map.Entry that throws UnsupportedOperationException when setValue is called.
    Since:
    3.0
    • Constructor Summary

      Constructors 
      Constructor Description
      UnmodifiableMapEntry​(java.util.Map.Entry<? extends K,​? extends V> entry)
      Constructs a new entry from the specified Map.Entry.
      UnmodifiableMapEntry​(K key, V value)
      Constructs a new entry with the specified key and given value.
      UnmodifiableMapEntry​(KeyValue<? extends K,​? extends V> pair)
      Constructs a new entry from the specified KeyValue.
    • Constructor Detail

      • UnmodifiableMapEntry

        public UnmodifiableMapEntry​(K key,
                                    V value)
        Constructs a new entry with the specified key and given value.
        Parameters:
        key - the key for the entry, may be null
        value - the value for the entry, may be null
      • UnmodifiableMapEntry

        public UnmodifiableMapEntry​(KeyValue<? extends K,​? extends V> pair)
        Constructs a new entry from the specified KeyValue.
        Parameters:
        pair - the pair to copy, must not be null
        Throws:
        java.lang.NullPointerException - if the entry is null
      • UnmodifiableMapEntry

        public UnmodifiableMapEntry​(java.util.Map.Entry<? extends K,​? extends V> entry)
        Constructs a new entry from the specified Map.Entry.
        Parameters:
        entry - the entry to copy, must not be null
        Throws:
        java.lang.NullPointerException - if the entry is null
    • Method Detail

      • setValue

        public V setValue​(V value)
        Throws UnsupportedOperationException.
        Specified by:
        setValue in interface java.util.Map.Entry<K,​V>
        Overrides:
        setValue in class AbstractMapEntry<K,​V>
        Parameters:
        value - the new value
        Returns:
        the previous value
        Throws:
        java.lang.UnsupportedOperationException - always