import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.LogManager;

import java.util.Set;
import java.util.HashSet;

public class PackageType
{
	private static final Logger LOGGER = LogManager.getLogger(PackageType.class);

	public static void main(String[] args) 
	{
		int age = 9;
		//Integer bigAge = new Integer(age);
		Integer bigAge = Integer.valueOf(age);
		int smallAge = bigAge.intValue();

		double money = 20;
		Double bigMoney = money;
		double smallMoney = bigMoney;

		Set<Integer> set = new HashSet<>();
		set.add(bigAge);
		set.add(9);

		LOGGER.info(set.size());

		for (Integer element : set) 
		{
			LOGGER.info(element);
			//LOGGER.info(element.valueOf());
		}

	}
}