The higherEntry() method of
NavigableMap interface in Java is used to return a key-value mapping associated with the least key strictly greater than the given key, or null if there is no such key existed.
Syntax:
Map.Entry< K, V > higherEntry(K key)
Where, K is the type of key maintained by this map and V is the type of values mapped to the keys.
Parameters: This function accepts a single parameter
Key which refers to the type of key maintained by this map container.
Return Value: It returns a key-value mapping associated with the least key strictly greater than the given key, or null if there is no such key existed.
Below programs illustrate the higherEntry() method in Java:
Program 1: When the key is integer.
Output:
The mapping with least key is : 3=three
Program 2: When the key is string.
