Class Int2CharMaps.EmptyMap

  • All Implemented Interfaces:
    Function<java.lang.Integer,​java.lang.Character>, Int2CharFunction, Int2CharMap, java.io.Serializable, java.lang.Cloneable, java.util.function.Function<java.lang.Integer,​java.lang.Character>, java.util.function.IntUnaryOperator, java.util.Map<java.lang.Integer,​java.lang.Character>
    Direct Known Subclasses:
    Int2CharSortedMaps.EmptySortedMap
    Enclosing class:
    Int2CharMaps

    public static class Int2CharMaps.EmptyMap
    extends Int2CharFunctions.EmptyFunction
    implements Int2CharMap, java.io.Serializable, java.lang.Cloneable
    An immutable class representing an empty type-specific map.

    This class may be useful to implement your own in case you subclass a type-specific map.

    See Also:
    Serialized Form
    • Method Detail

      • containsValue

        public boolean containsValue​(char v)
        Description copied from interface: Int2CharMap
        Returns true if this map maps one or more keys to the specified value.
        Specified by:
        containsValue in interface Int2CharMap
        See Also:
        Map.containsValue(Object)
      • containsValue

        @Deprecated
        public boolean containsValue​(java.lang.Object ov)
        Deprecated.
        Please use the corresponding type-specific method instead.
        Specified by:
        containsValue in interface Int2CharMap
        Specified by:
        containsValue in interface java.util.Map<java.lang.Integer,​java.lang.Character>
      • putAll

        public void putAll​(java.util.Map<? extends java.lang.Integer,​? extends java.lang.Character> m)
        Specified by:
        putAll in interface java.util.Map<java.lang.Integer,​java.lang.Character>
      • int2CharEntrySet

        public ObjectSet<Int2CharMap.Entry> int2CharEntrySet()
        Description copied from interface: Int2CharMap
        Returns a type-specific set view of the mappings contained in this map.

        This method is necessary because there is no inheritance along type parameters: it is thus impossible to strengthen Map.entrySet() so that it returns an ObjectSet of type-specific entries (the latter makes it possible to access keys and values with type-specific methods).

        Specified by:
        int2CharEntrySet in interface Int2CharMap
        Returns:
        a type-specific set view of the mappings contained in this map.
        See Also:
        Map.entrySet()
      • keySet

        public IntSet keySet()
        Description copied from interface: Int2CharMap

        Note that this specification strengthens the one given in Map.keySet().

        Specified by:
        keySet in interface Int2CharMap
        Specified by:
        keySet in interface java.util.Map<java.lang.Integer,​java.lang.Character>
        Returns:
        a set view of the keys contained in this map.
        See Also:
        Map.keySet()
      • values

        public CharCollection values()
        Description copied from interface: Int2CharMap

        Note that this specification strengthens the one given in Map.values().

        Specified by:
        values in interface Int2CharMap
        Specified by:
        values in interface java.util.Map<java.lang.Integer,​java.lang.Character>
        Returns:
        a set view of the values contained in this map.
        See Also:
        Map.values()
      • isEmpty

        public boolean isEmpty()
        Specified by:
        isEmpty in interface java.util.Map<java.lang.Integer,​java.lang.Character>
      • equals

        public boolean equals​(java.lang.Object o)
        Specified by:
        equals in interface java.util.Map<java.lang.Integer,​java.lang.Character>
        Overrides:
        equals in class Int2CharFunctions.EmptyFunction