import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;


public class Main {

	public static void main(String[] args) {

		Map<String, Integer> map = new HashMap<>();
		
		map.put("hello", 1);
		map.put("world", 2);
		
		List<Entry<String, Integer>> list = new ArrayList<>(map.entrySet());
		
		System.out.println("list size: " + list.size());
		
		System.out.println("list[0].key: " + list.get(0).getKey());
		System.out.println("list[0].value: " + list.get(0).getValue());
		
	}
	
}