Demonstrate TreeSet to Add Elements

Here is a Java Program to Demonstrate TreeSet.

import java.util.*;

class TreeSetDemo {
  public static void main(String args[]) {
    // Create a tree set
    TreeSet ts = new TreeSet();
    
    // Add elements to the tree set
    ts.add("C");
    ts.add("A");
    ts.add("B");
    ts.add("E");
    ts.add("F");
    ts.add("D");

    System.out.println(ts);
  }
}

Output of Above Java Program
[A, B, C, D, E, F]