Package it.unimi.dsi.fastutil.objects

Class ReferenceCollections.EmptyCollection<K>

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean addAll​(java.util.Collection<? extends K> c)  
      void clear()  
      boolean contains​(java.lang.Object k)  
      boolean equals​(java.lang.Object o)  
      int hashCode()  
      ObjectBidirectionalIterator<K> iterator()
      Returns a type-specific iterator on the elements of this collection.
      boolean removeAll​(java.util.Collection<?> c)  
      boolean retainAll​(java.util.Collection<?> c)  
      int size()  
      java.lang.Object[] toArray()  

      • Methods inherited from class java.util.AbstractCollection

        add, containsAll, isEmpty, remove, toArray

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

      • Methods inherited from interface java.util.Collection

        add, containsAll, isEmpty, parallelStream, remove, removeIf, spliterator, stream, toArray, toArray

      • Methods inherited from interface java.lang.Iterable

        forEach

    • Method Detail

      • contains

        public boolean contains​(java.lang.Object k)
        Specified by:
        contains in interface java.util.Collection<K>
        Overrides:
        contains in class java.util.AbstractCollection<K>

      • toArray

        public java.lang.Object[] toArray()
        Specified by:
        toArray in interface java.util.Collection<K>
        Overrides:
        toArray in class java.util.AbstractCollection<K>

      • iterator

        public ObjectBidirectionalIterator<K> iterator()
        Description copied from interface: ReferenceCollection
        Returns a type-specific iterator on the elements of this collection.

        Note that this specification strengthens the one given in Iterable.iterator(), which was already strengthened in the corresponding type-specific class, but was weakened by the fact that this interface extends Collection.

        Specified by:
        iterator in interface java.util.Collection<K>
        Specified by:
        iterator in interface java.lang.Iterable<K>
        Specified by:
        iterator in interface ObjectIterable<K>
        Specified by:
        iterator in interface ReferenceCollection<K>
        Specified by:
        iterator in class AbstractReferenceCollection<K>
        Returns:
        a type-specific iterator on the elements of this collection.
        See Also:
        Iterable.iterator()

      • size

        public int size()
        Specified by:
        size in interface java.util.Collection<K>
        Specified by:
        size in class java.util.AbstractCollection<K>

      • clear

        public void clear()
        Specified by:
        clear in interface java.util.Collection<K>
        Overrides:
        clear in class java.util.AbstractCollection<K>

      • hashCode

        public int hashCode()
        Specified by:
        hashCode in interface java.util.Collection<K>
        Overrides:
        hashCode in class java.lang.Object

      • equals

        public boolean equals​(java.lang.Object o)
        Specified by:
        equals in interface java.util.Collection<K>
        Overrides:
        equals in class java.lang.Object

      • addAll

        public boolean addAll​(java.util.Collection<? extends K> c)
        Specified by:
        addAll in interface java.util.Collection<K>
        Overrides:
        addAll in class java.util.AbstractCollection<K>

      • removeAll

        public boolean removeAll​(java.util.Collection<?> c)
        Specified by:
        removeAll in interface java.util.Collection<K>
        Overrides:
        removeAll in class java.util.AbstractCollection<K>

      • retainAll

        public boolean retainAll​(java.util.Collection<?> c)
        Specified by:
        retainAll in interface java.util.Collection<K>
        Overrides:
        retainAll in class java.util.AbstractCollection<K>