import java.util.*;
import java.lang.*;
import java.io.*;
 
class MySetWithCollection {
    public static void main(String a[]){
        List<String> li = new ArrayList<String>();
        li.add("one");
        li.add("two");
        li.add("three");
        li.add("four");
        System.out.println("List: "+li);
        //create a treeset with the list
        TreeSet<String> myset = new TreeSet<String>(li);
        System.out.println("Set: "+myset);
    }
}

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