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
