public static final <K, V> SortedMap<K, V> emptySortedMap ()

Returns an empty sorted map (immutable). This map is serializable.

This example illustrates the type-safe way to obtain an empty map:

     SortedMap<String, Date> s = Collections.emptySortedMap();

<K>    the class of the map keys
<V>    the class of the map values

Returns:  an empty sorted map

Since:  1.8

@implNote Implementations of this method need not create a separate SortedMap object for each call.