1 import java.util.Map; import java.util.Set; import java.util.stream.Collectors; public class App { public static void main(String[] args) { Map<String, Integer> map = Map.of("Ivan", 2000, "Petr", 2010, "Egor", 2000); Set<String> mapKeys = map.keySet(); System.out.println(mapKeys); // => [Petr, Ivan, Egor] Set<Integer> mapValues = map.values().stream().collect(Collectors.toSet()); System.out.println(mapValues); // => [2000, 2010] Set<Map.Entry<String, Integer>> mapSet = map.entrySet(); System.out.println(mapSet); // => [Petr=2010, Ivan=2000, Egor=2000] } }