如何从Map中的值中选择列表中的特定Map？

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class MapSelection {
    public static void main(String[] args) {
        List<Map<String, String>> mapList = new ArrayList<>();

        // 添加示例Map对象到列表中
        Map<String, String> map1 = new HashMap<>();
        map1.put("name", "John");
        map1.put("age", "25");
        mapList.add(map1);

        Map<String, String> map2 = new HashMap<>();
        map2.put("name", "Jane");
        map2.put("age", "30");
        mapList.add(map2);

        Map<String, String> map3 = new HashMap<>();
        map3.put("name", "Tom");
        map3.put("age", "28");
        mapList.add(map3);

        // 选择年龄大于等于30的Map对象
        List<Map<String, String>> selectedMaps = selectMapsByAge(mapList, 30);

        // 输出选择的Map对象
        for (Map<String, String> selectedMap : selectedMaps) {
            System.out.println(selectedMap);
        }
    }

    public static List<Map<String, String>> selectMapsByAge(List<Map<String, String>> mapList, int age) {
        List<Map<String, String>> selectedMaps = new ArrayList<>();

        for (Map<String, String> map : mapList) {
            String ageValue = map.get("age");
            if (ageValue != null && Integer.parseInt(ageValue) >= age) {
                selectedMaps.add(map);
            }
        }

        return selectedMaps;
    }
}