What are best practices for working with NavigableMap?

import java.util.NavigableMap;
import java.util.TreeMap;

public class NavigableMapExample {
    public static void main(String[] args) {
        // Creating a NavigableMap
        NavigableMap navigableMap = new TreeMap<>();
        
        // Adding entries to the map
        navigableMap.put(1, "One");
        navigableMap.put(3, "Three");
        navigableMap.put(2, "Two");
        
        // Displaying the map
        System.out.println("Original NavigableMap: " + navigableMap);
        
        // Getting the first entry
        System.out.println("First Entry: " + navigableMap.firstEntry());
        
        // Getting the last entry
        System.out.println("Last Entry: " + navigableMap.lastEntry());
        
        // Getting a submap
        NavigableMap subMap = navigableMap.subMap(1, true, 2, true);
        System.out.println("SubMap from 1 to 2: " + subMap);
        
        // Removing an entry
        navigableMap.remove(2);
        System.out.println("NavigableMap after removal: " + navigableMap);
    }
}