Package org.apache.commons.collections4.map

Class UnmodifiableSortedMap<K,​V>

  • Type Parameters:
    K - the type of the keys in this map
    V - the type of the values in this map
    All Implemented Interfaces:
    java.io.Serializable, java.util.Map<K,​V>, java.util.SortedMap<K,​V>, Get<K,​V>, IterableGet<K,​V>, IterableMap<K,​V>, IterableSortedMap<K,​V>, OrderedMap<K,​V>, Put<K,​V>, Unmodifiable
    public final class UnmodifiableSortedMap<K,​V>
extends AbstractSortedMapDecorator<K,​V>
implements Unmodifiable, java.io.Serializable
    Decorates another SortedMap to ensure it can't be altered.

    This class is Serializable from Commons Collections 3.1.

    Attempts to modify it will result in an UnsupportedOperationException.

    Since:
    3.0
    See Also:
    Serialized Form

    • 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

      • unmodifiableSortedMap

        public static <K,​V> java.util.SortedMap<K,​V> unmodifiableSortedMap​(java.util.SortedMap<K,​? extends V> map)
        Factory method to create an unmodifiable sorted map.
        Type Parameters:
        K - the key type
        V - the value type
        Parameters:
        map - the map to decorate, must not be null
        Returns:
        a new unmodifiable sorted map
        Throws:
        java.lang.NullPointerException - if map is null
        Since:
        4.0

      • clear

        public void clear()
        Specified by:
        clear in interface java.util.Map<K,​V>
        Specified by:
        clear in interface Put<K,​V>
        Overrides:
        clear in class AbstractMapDecorator<K,​V>
        See Also:
        Map.clear()

      • put

        public V put​(K key,
             V value)
        Description copied from interface: Put
        Note that the return type is Object, rather than V as in the Map interface. See the class Javadoc for further info.
        Specified by:
        put in interface java.util.Map<K,​V>
        Specified by:
        put in interface Put<K,​V>
        Overrides:
        put in class AbstractMapDecorator<K,​V>
        Parameters:
        key - key with which the specified value is to be associated
        value - value to be associated with the specified key
        Returns:
        the previous value associated with key, or null if there was no mapping for key. (A null return can also indicate that the map previously associated null with key, if the implementation supports null values.)
        See Also:
        Map.put(Object, Object)

      • putAll

        public void putAll​(java.util.Map<? extends K,​? extends V> mapToCopy)
        Specified by:
        putAll in interface java.util.Map<K,​V>
        Specified by:
        putAll in interface Put<K,​V>
        Overrides:
        putAll in class AbstractMapDecorator<K,​V>
        Parameters:
        mapToCopy - mappings to be stored in this map
        See Also:
        Map.putAll(Map)

      • remove

        public V remove​(java.lang.Object key)
        Specified by:
        remove in interface Get<K,​V>
        Specified by:
        remove in interface java.util.Map<K,​V>
        Overrides:
        remove in class AbstractMapDecorator<K,​V>
        Parameters:
        key - key whose mapping is to be removed from the map
        Returns:
        the previous value associated with key, or null if there was no mapping for key.
        See Also:
        Map.remove(Object)

      • entrySet

        public java.util.Set<java.util.Map.Entry<K,​V>> entrySet()
        Specified by:
        entrySet in interface Get<K,​V>
        Specified by:
        entrySet in interface java.util.Map<K,​V>
        Specified by:
        entrySet in interface java.util.SortedMap<K,​V>
        Overrides:
        entrySet in class AbstractMapDecorator<K,​V>
        Returns:
        a set view of the mappings contained in this map
        See Also:
        Map.entrySet()

      • keySet

        public java.util.Set<K> keySet()
        Specified by:
        keySet in interface Get<K,​V>
        Specified by:
        keySet in interface java.util.Map<K,​V>
        Specified by:
        keySet in interface java.util.SortedMap<K,​V>
        Overrides:
        keySet in class AbstractMapDecorator<K,​V>
        Returns:
        a set view of the keys contained in this map
        See Also:
        Map.keySet()

      • values

        public java.util.Collection<V> values()
        Specified by:
        values in interface Get<K,​V>
        Specified by:
        values in interface java.util.Map<K,​V>
        Specified by:
        values in interface java.util.SortedMap<K,​V>
        Overrides:
        values in class AbstractMapDecorator<K,​V>
        Returns:
        a collection view of the values contained in this map
        See Also:
        Map.values()

      • firstKey

        public K firstKey()
        Description copied from interface: OrderedMap
        Gets the first key currently in this map.
        Specified by:
        firstKey in interface OrderedMap<K,​V>
        Specified by:
        firstKey in interface java.util.SortedMap<K,​V>
        Overrides:
        firstKey in class AbstractSortedMapDecorator<K,​V>
        Returns:
        the first key currently in this map

      • lastKey

        public K lastKey()
        Description copied from interface: OrderedMap
        Gets the last key currently in this map.
        Specified by:
        lastKey in interface OrderedMap<K,​V>
        Specified by:
        lastKey in interface java.util.SortedMap<K,​V>
        Overrides:
        lastKey in class AbstractSortedMapDecorator<K,​V>
        Returns:
        the last key currently in this map

      • subMap

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