The clear() method of NavigableMap interface in Java is used to clear and remove all of the elements or mappings from a specified Map.
Syntax:
NavigableMap.clear()
Parameters: The method does not accept any parameters.
Return Value: The method does not return any value.
Below programs are used to illustrate the working of clear() method:
Program 1: Mapping String Values to Integer Keys.
Output:
Initial Mappings are: {10=Geeks, 15=4, 20=Geeks, 25=Welcomes, 30=You}
Finally the map looks like: {}
Program 2: Mapping Integer Values to String Keys.
Output:
Initial Mappings are: {4=15, Geeks=20, Welcomes=25, You=30}
Finally the map looks like: {}
Note: The same operation can be performed with any type of Mapping with variation and combination of different data types.
