- TIBCO BusinessEvents®
- Standard
- Collections
- SortedMap

# Collections.SortedMap

## Description

SortedMap functions

## Functions

Name | Signature and Synopsis
--- | ---
`comparator` | `Object comparator ( Object map )` Returns the comparator used to order the keys in this map, or null if this map uses the Comparable natural ordering of its keys.
`firstKey` | `Object firstKey ( Object map )` Returns the first (lowest) key currently in this map.
`headMap` | `Object headMap ( Object map, Object toKey )` Returns a view of the portion of this map whose keys are strictly less than toKey.
`lastKey` | `Object lastKey (Object map )` Returns the last (highest) key currently in this map.
`subMap` | `Object subMap ( Object map, Object fromKey ,Object toKey )` Returns a view of the portion of this map whose keys range from fromKey, inclusive, to toKey, exclusive. (If fromKey and toKey are equal, the returned map is empty.)
`tailMap` | `Object tailMap ( Object map, Object fromKey )` Returns a view of the portion of this map whose keys are greater than or equal to fromKey.