// write a java code to demonstrate treeset
import java.util.*;
public class TreeSet18a {
	public static void main(String args[]){
		TreeSet<String> home = new TreeSet<String>();
		home.add("Hall Room");
		home.add("Bed Room");
		home.add("Bed Room");
		home.add("Kitchen");
		Iterator<String> itr = home.iterator();
		while(itr.hasNext()){
			System.out.println(itr.next());
		}
	}
}