Java:通过流将排序的映射键分配给数组

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Map<String, Integer> map = new HashMap<>();
        map.put("apple", 3);
        map.put("banana", 2);
        map.put("orange", 5);

        String[] sortedKeys = map.entrySet().stream()
                .sorted(Map.Entry.comparingByKey())
                .map(Map.Entry::getKey)
                .toArray(String[]::new);

        System.out.println(Arrays.toString(sortedKeys));
    }
}