//Construct a list for this example
List<String> colors = new ArrayList<String>(Arrays.asList("Yellow", "Cyan", "Magenta", "Green"));
String first, last;

//Get the first and last element
first = colors.get(0);
last = colors.get(colors.size() - 1);

List<String> colors = new ArrayList<String>(Arrays.asList("Yellow", "Cyan", "Magenta", "Green"));

//Getting the first three elements in the list
//We want to get a subList from index1=0 to index2=2
//NOTE WELL: We use "3" for second param (index2+1)
List<String> threeColors = colors.subList(0,3);

//Print results
println("colors: " + Arrays.toString(colors.toArray()));
println("threeColors: " + Arrays.toString(threeColors.toArray()));

public Country countryNamed(String countryName)
{
	//Return the matching country (or null if none found)
	for (Country eachCountry: this.getCountries())
		if (eachCountry.getName().equalsIgnoreCase(countryName))
			return eachCountry;
	//None found, so return null (meaning nothing)
	return null;
}

public Country countryWithCapital(String capitalName)
{
	//Return the matching country that has capital matching method param
	for (Country eachCountry: this.getCountries())
		if (eachCountry.getCapital().equalsIgnoreCase(capitalName))
			return eachCountry;
	return null;
}

public List<Country> countriesNamed(List<String> countryNames)
{
	//Return the countries that have names that match any of the
	//names in the method parameter "countryNames"
	List<Country> matches = new ArrayList<Country>();
	for (Country eachCountry: this.getCountries())
		if (countryNames.contains(eachCountry.getName()))
			matches.add(eachCountry);
	return matches;
}

public List<Country> selectWarmerThan(int thresholdTemperatureF)
{
	//Return a list of all countries warmer then method param
	List<Country> matches = new ArrayList<Country>();
	for (Country eachCountry: this.getCountries())
		if (eachCountry.getAveTemperature() > thresholdTemperatureF)
			matches.add(eachCountry);
	return matches;
}