import java.nio.file.Path;
import java.time.LocalDate;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class OldWay {
    public static void main(String[] args) {
        List<String> words = List.of("apple", "avocado", "banana", "blueberry", "cherry");
        Map<Character, List<String>> byInitial = words.stream()
                .collect(Collectors.groupingBy(w -> w.charAt(0)));
        System.out.println(byInitial);
        System.out.println(Path.of("a", "b", "c.txt") + " on " + LocalDate.of(2026, 9, 15));
    }
}