从包含带有java流的List<String>的List<Object>中检索List<String>

import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        // 创建包含带有java流的List<String>的List<Object>
        List<Object> list = new ArrayList<>();
        list.add("Java");
        list.add(123);
        list.add(new ArrayList<String>());

        // 检索List<String>
        List<List<String>> result = retrieveListString(list);

        // 打印结果
        for (List<String> sublist : result) {
            System.out.println(sublist);
        }
    }

    public static List<List<String>> retrieveListString(List<Object> list) {
        List<List<String>> result = new ArrayList<>();

        for (Object obj : list) {
            if (obj instanceof List) {
                List<?> sublist = (List<?>) obj;
                if (!sublist.isEmpty() && sublist.get(0) instanceof String) {
                    result.add((List<String>) sublist);
                }
            }
        }

        return result;
    }
}