Class ForwardingSortedMap<K,​V>

  • All Implemented Interfaces:
    java.util.Map<K,​V>, java.util.SortedMap<K,​V>
    Direct Known Subclasses:
    ForwardingNavigableMap

    @GwtCompatible
    public abstract class ForwardingSortedMap<K,​V>
    extends ForwardingMap<K,​V>
    implements java.util.SortedMap<K,​V>
    A sorted map which forwards all its method calls to another sorted map. Subclasses should override one or more methods to modify the behavior of the backing sorted map as desired per the decorator pattern.

    Warning: The methods of ForwardingSortedMap forward indiscriminately to the methods of the delegate. For example, overriding ForwardingMap.put(K, V) alone will not change the behavior of ForwardingMap.putAll(java.util.Map<? extends K, ? extends V>), which can lead to unexpected behavior. In this case, you should override putAll as well, either providing your own implementation, or delegating to the provided standardPutAll method.

    Each of the standard methods, where appropriate, use the comparator of the map to test equality for both keys and values, unlike ForwardingMap.

    The standard methods and the collection views they return are not guaranteed to be thread-safe, even when all of the methods that they depend on are thread-safe.

    Since:
    2.0 (imported from Google Collections Library)
    • Nested Class Summary

      • Nested classes/interfaces inherited from interface java.util.Map

        java.util.Map.Entry<K extends java.lang.Object,​V extends java.lang.Object>
    • Method Detail

      • comparator

        public java.util.Comparator<? super K> comparator()
        Specified by:
        comparator in interface java.util.SortedMap<K,​V>
      • firstKey

        public K firstKey()
        Specified by:
        firstKey in interface java.util.SortedMap<K,​V>
      • headMap

        public java.util.SortedMap<K,​V> headMap​(K toKey)
        Specified by:
        headMap in interface java.util.SortedMap<K,​V>
      • lastKey

        public K lastKey()
        Specified by:
        lastKey in interface java.util.SortedMap<K,​V>
      • subMap

        public java.util.SortedMap<K,​V> subMap​(K fromKey,
                                                     K toKey)
        Specified by:
        subMap in interface java.util.SortedMap<K,​V>
      • tailMap

        public java.util.SortedMap<K,​V> tailMap​(K fromKey)
        Specified by:
        tailMap in interface java.util.SortedMap<K,​V>