Write a java program to get the first and last elements in a tree

firstLast.java

import java.util.*;  
public class firstLast {  
public static void main(String[] args) {  
TreeSet tree = new TreeSet();  
tree.add(15);  
tree.add(25);  
  
System.out.println("First is "+tree.first()+" and 2nd is  
"+tree.last());  
}  
}  

Output

  
First is 15 and 2nd is 25