NavigableMap clear() Method in Java

// Java code to illustrate the clear() method
import java.util.*;

public class NavigableMap_Demo {
    public static void main(String[] args)
    {

        // Creating an empty NavigableMap
        NavigableMap<Integer, String> nav_map = new TreeMap<Integer, String>();

        // Mapping string values to int keys
        nav_map.put(10, "Geeks");
        nav_map.put(15, "4");
        nav_map.put(20, "Geeks");
        nav_map.put(25, "Welcomes");
        nav_map.put(30, "You");

        // Displaying the NavigableMap
        System.out.println("Initial Mappings are: " + nav_map);

        // Clearing the tree map using clear()
        nav_map.clear();

        // Displaying the final NavigableMap
        System.out.println("Finally the map looks like: " + nav_map);
    }
}

// Java code to illustrate the clear() method
import java.util.*;

public class NavigableMap_Demo {
    public static void main(String[] args)
    {

        // Creating an empty NavigableMap
        TreeMap<String, Integer> nav_map = new TreeMap<String, Integer>();

        // Mapping int values to string keys
        nav_map.put("Geeks", 10);
        nav_map.put("4", 15);
        nav_map.put("Geeks", 20);
        nav_map.put("Welcomes", 25);
        nav_map.put("You", 30);

        // Displaying the NavigableMap
        System.out.println("Initial Mappings are: " + nav_map);

        // Clearing the tree map using clear()
        nav_map.clear();

        // Displaying the final NavigableMap
        System.out.println("Finally the map looks like: " + nav_map);
    }
}