Syntax error Remove the last entry of the TreeMap in Java

Remove the last entry of the TreeMap in Java

To remove the last entry of the TreeMap, use the pollLastEntry() method.

Let us first create a TreeMap and add elements

TreeMap<Integer, String> m = new TreeMap<Integer, String>();
m.put(1,"India");
m.put(2,"US");
m.put(3,"Australia");
m.put(4,"Netherlands");
m.put(5,"Canada");

Remove the last entry now

m.pollLastEntry()

The following is an example to remove the last entry of the TreeMap

Example

 Live Demo

import java.util.*;
public class Demo {
   public static void main(String args[]){
      TreeMap<Integer, String> m = new TreeMap<Integer, String>();
      m.put(1,"India");
      m.put(2,"US");
      m.put(3,"Australia");
      m.put(4,"Netherlands");
      m.put(5,"Canada");
      System.out.println("TreeMap Elements = "+m);
      System.out.println("Removing Last Entry : "+m.pollLastEntry());
      System.out.println("Updated TreeMap Elements = "+m);
   }
}

Output

The following is the output

TreeMap Elements = {1=India, 2=US, 3=Australia, 4=Netherlands, 5=Canada}
Removing Last Entry : 5=Canada
Updated TreeMap Elements = {1=India, 2=US, 3=Australia, 4=Netherlands}
Updated on: 2020-06-29T13:38:04+05:30

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