TreeSet : FirstMethod

import java.util.TreeSet;

public class FirstMethod {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        TreeSet<Integer> ts1 = new TreeSet<>();   
        ts1.add(36);
        ts1.add(48);
        ts1.add(24);
        ts1.add(64);
       
        System.out.println("Full-List (Duplicate Not Allowed && Maintain Ascending Order in TreeSet) : "+ts1);
       
        System.out.println("First element : "+ts1.first());
    }
}