package com.michaelthomas.set.treeset;

/**
 * @author Michael Thomas (www.michael-thomas.com) michael@michael-thomas.com
 * 
 */

import java.util.Set;
import java.util.TreeSet;

public class MyTreeSet {
	//NOTE: For learning, you must see the JUnit test file in the /test/ directory and matching package!
	
	Set<String> buildTreeSetCarVendors1() {
		Set<String> set = new TreeSet<String>();
		set.add("BMW");
		set.add("Toyota");
		set.add("Ford");
		return set;
	}

	Set<String> buildTreeSetCarVendors2() {
		Set<String> set = new TreeSet<String>();
		set.add("Mercedes");
		set.add("Chevorlet");
		set.add("BMW");
		return set;
	}
	
	Set<String> buildTreeSetWithNulls() {
		Set<String> set = new TreeSet<String>();
		set.add("BMW");
		//Note: Can not have nulls.  Throws an exception.
		//set.add(null);
		set.add("");
		return set;
	}

}