如何从java中给定的map值中查找最新日期

import java.time.LocalDate;
import java.util.*;

public class LatestDateFinder {

    public static void main(String[] args) {
        Map<String, LocalDate> dateMap = new HashMap<>();
        dateMap.put("event1", LocalDate.of(2023, 1, 15));
        dateMap.put("event2", LocalDate.of(2023, 3, 20));
        dateMap.put("event3", LocalDate.of(2022, 11, 5));

        LocalDate latestDate = findLatestDate(dateMap);
        System.out.println("The latest date is: " + latestDate);
    }

    public static LocalDate findLatestDate(Map<String, LocalDate> dateMap) {
        if (dateMap == null || dateMap.isEmpty()) {
            throw new IllegalArgumentException("The map cannot be null or empty");
        }

        LocalDate latestDate = null;
        for (LocalDate date : dateMap.values()) {
            if (latestDate == null || date.isAfter(latestDate)) {
                latestDate = date;
            }
        }
        return latestDate;
    }
}