Class ForwardingMap.StandardKeySet

    • Constructor Detail

      • StandardKeySet

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

      • forEach

        public void forEach​(Consumer<? super K> action)
        Description copied from interface: java.lang.Iterable
        Performs the given action for each element of the Iterable until all elements have been processed or the action throws an exception. Actions are performed in the order of iteration, if that order is specified. Exceptions thrown by the action are relayed to the caller.

        The behavior of this method is unspecified if the action performs side-effects that modify the underlying source of elements, unless an overriding class has specified a concurrent modification policy.

        action - The action to be performed for each element
      • remove

        public boolean remove​(@CheckForNull
                              Object o)
        Description copied from class: java.util.AbstractCollection
        Removes a single instance of the specified element from this collection, if it is present (optional operation). More formally, removes an element e such that Objects.equals(o, e), if this collection contains one or more such elements. Returns true if this collection contained the specified element (or equivalently, if this collection changed as a result of the call).
        Specified by:
        remove in interface Collection<K extends @Nullable Object>
        Specified by:
        remove in interface Set<K extends @Nullable Object>
        remove in class AbstractCollection<K extends @Nullable Object>
        o - element to be removed from this collection, if present
        true if an element was removed as a result of this call
      • removeAll

        public boolean removeAll​(Collection<?> c)
        Description copied from class: java.util.AbstractSet
        Removes from this set all of its elements that are contained in the specified collection (optional operation). If the specified collection is also a set, this operation effectively modifies this set so that its value is the asymmetric set difference of the two sets.

        This implementation determines which is the smaller of this set and the specified collection, by invoking the size method on each. If this set has fewer elements, then the implementation iterates over this set, checking each element returned by the iterator in turn to see if it is contained in the specified collection. If it is so contained, it is removed from this set with the iterator's remove method. If the specified collection has fewer elements, then the implementation iterates over the specified collection, removing from this set each element returned by the iterator, using this set's remove method.

        Note that this implementation will throw an UnsupportedOperationException if the iterator returned by the iterator method does not implement the remove method.

        Specified by:
        removeAll in interface Collection<E extends @Nullable Object>
        Specified by:
        removeAll in interface Set<E extends @Nullable Object>
        removeAll in class AbstractSet<E extends @Nullable Object>
        c - collection containing elements to be removed from this set
        true if this set changed as a result of the call
        See Also:
        AbstractCollection.remove(Object), AbstractCollection.contains(Object)