Class ForwardingSortedMap.StandardKeySet

  • All Implemented Interfaces:
    java.lang.Iterable<K>, java.util.Collection<K>, java.util.Set<K>, java.util.SortedSet<K>
    Enclosing class:
    ForwardingSortedMap<K extends @Nullable java.lang.Object,​V extends @Nullable java.lang.Object>

    @Beta
    protected class ForwardingSortedMap.StandardKeySet
    extends java.util.AbstractSet<E>
    A sensible implementation of SortedMap.keySet() in terms of the methods of ForwardingSortedMap. In many cases, you may wish to override ForwardingMap.keySet() to forward to this implementation or a subclass thereof.
    Since:
    15.0
    • Constructor Summary

      Constructors 
      Constructor Description
      StandardKeySet()
      Constructor for use by subclasses.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void clear()  
      java.util.Comparator<? super K> comparator()  
      boolean contains​(java.lang.Object o)  
      K first()  
      void forEach​(java.util.function.Consumer<? super K> action)  
      java.util.SortedSet<K> headSet​(K toElement)  
      boolean isEmpty()  
      java.util.Iterator<K> iterator()  
      K last()  
      boolean remove​(java.lang.Object o)  
      boolean removeAll​(java.util.Collection<?> c)  
      boolean retainAll​(java.util.Collection<?> c)  
      int size()  
      java.util.SortedSet<K> subSet​(K fromElement, K toElement)  
      java.util.SortedSet<K> tailSet​(K fromElement)  
      • Methods inherited from class java.util.AbstractSet

        equals, hashCode
      • Methods inherited from class java.util.AbstractCollection

        add, addAll, containsAll, toArray, toArray, toString
      • Methods inherited from class java.lang.Object

        clone, finalize, getClass, notify, notifyAll, wait, wait, wait
      • Methods inherited from interface java.util.Collection

        parallelStream, removeIf, stream, toArray
      • Methods inherited from interface java.lang.Iterable

        forEach
      • Methods inherited from interface java.util.Set

        add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray
      • Methods inherited from interface java.util.SortedSet

        spliterator
    • Constructor Detail

      • StandardKeySet

        public StandardKeySet()
        Constructor for use by subclasses.
    • Method Detail

      • comparator

        @CheckForNull
        public java.util.Comparator<? super K> comparator()
        Specified by:
        comparator in interface java.util.SortedSet<K extends @Nullable java.lang.Object>
      • subSet

        public java.util.SortedSet<K> subSet​(K fromElement,
                                             K toElement)
        Specified by:
        subSet in interface java.util.SortedSet<K extends @Nullable java.lang.Object>
      • headSet

        public java.util.SortedSet<K> headSet​(K toElement)
        Specified by:
        headSet in interface java.util.SortedSet<K extends @Nullable java.lang.Object>
      • tailSet

        public java.util.SortedSet<K> tailSet​(K fromElement)
        Specified by:
        tailSet in interface java.util.SortedSet<K extends @Nullable java.lang.Object>
      • first

        public K first()
        Specified by:
        first in interface java.util.SortedSet<K extends @Nullable java.lang.Object>
      • last

        public K last()
        Specified by:
        last in interface java.util.SortedSet<K extends @Nullable java.lang.Object>
      • iterator

        public java.util.Iterator<K> iterator()
        Specified by:
        iterator in interface java.util.Collection<K extends @Nullable java.lang.Object>
        Specified by:
        iterator in interface java.lang.Iterable<K extends @Nullable java.lang.Object>
        Specified by:
        iterator in interface java.util.Set<K extends @Nullable java.lang.Object>
        Specified by:
        iterator in class java.util.AbstractCollection<K extends @Nullable java.lang.Object>
      • forEach

        public void forEach​(java.util.function.Consumer<? super K> action)
      • size

        public int size()
        Specified by:
        size in interface java.util.Collection<K extends @Nullable java.lang.Object>
        Specified by:
        size in interface java.util.Set<K extends @Nullable java.lang.Object>
        Specified by:
        size in class java.util.AbstractCollection<K extends @Nullable java.lang.Object>
      • isEmpty

        public boolean isEmpty()
        Specified by:
        isEmpty in interface java.util.Collection<K extends @Nullable java.lang.Object>
        Specified by:
        isEmpty in interface java.util.Set<K extends @Nullable java.lang.Object>
        Overrides:
        isEmpty in class java.util.AbstractCollection<K extends @Nullable java.lang.Object>
      • contains

        public boolean contains​(@CheckForNull
                                java.lang.Object o)
        Specified by:
        contains in interface java.util.Collection<K extends @Nullable java.lang.Object>
        Specified by:
        contains in interface java.util.Set<K extends @Nullable java.lang.Object>
        Overrides:
        contains in class java.util.AbstractCollection<K extends @Nullable java.lang.Object>
      • remove

        public boolean remove​(@CheckForNull
                              java.lang.Object o)
        Specified by:
        remove in interface java.util.Collection<K extends @Nullable java.lang.Object>
        Specified by:
        remove in interface java.util.Set<K extends @Nullable java.lang.Object>
        Overrides:
        remove in class java.util.AbstractCollection<K extends @Nullable java.lang.Object>
      • clear

        public void clear()
        Specified by:
        clear in interface java.util.Collection<K extends @Nullable java.lang.Object>
        Specified by:
        clear in interface java.util.Set<K extends @Nullable java.lang.Object>
        Overrides:
        clear in class java.util.AbstractCollection<K extends @Nullable java.lang.Object>
      • removeAll

        public boolean removeAll​(java.util.Collection<?> c)
        Specified by:
        removeAll in interface java.util.Collection<E extends @Nullable java.lang.Object>
        Specified by:
        removeAll in interface java.util.Set<E extends @Nullable java.lang.Object>
        Overrides:
        removeAll in class java.util.AbstractSet<E extends @Nullable java.lang.Object>
      • retainAll

        public boolean retainAll​(java.util.Collection<?> c)
        Specified by:
        retainAll in interface java.util.Collection<E extends @Nullable java.lang.Object>
        Specified by:
        retainAll in interface java.util.Set<E extends @Nullable java.lang.Object>
        Overrides:
        retainAll in class java.util.AbstractCollection<E extends @Nullable java.lang.Object>