The java.util.TreeMap.lastEntry() method is used to returns the key-value mapping associated with the greatest key in this map, or null if the map is empty.
Syntax:
tree_map.lastEntry()
Parameters: The method does not take any parameters.
Return Value: The method returns an entry with the greatest key, or null if this map is empty.
Below examples illustrates the working of java.util.TreeMap.lastEntry() method:
Example 1: When the map is not empty.
Java
// Java program to illustrate// TreeMap lastEntry() methodimport java.util.*;  class GFG {    public static void main(String args[])    {          // Creating an empty TreeMap        TreeMap<Integer, String> tree_map            = new TreeMap<Integer, String>();          // Mapping string values to int keys        tree_map.put(98, "Geeks");        tree_map.put(100, "For");        tree_map.put(103, "Geeks");          // Printing last entry of the map        System.out.println("The last entry is : "                           + tree_map.lastEntry());    }} |
Output
The last entry is : 103=Geeks
Example 2: When the map is empty.
Java
// Java program to illustrate// TreeMap lastEntry() methodimport java.util.*;  class GFG {    public static void main(String args[])    {          // Creating an empty TreeMap        TreeMap<Integer, String> tree_map            = new TreeMap<Integer, String>();          // Printing last entry of the map        System.out.println("The last entry is : "                           + tree_map.lastEntry());    }} |
Output
The last entry is : null
