写一个java递归获取所有行政区划的例子

当然可以！以下是一个使用递归方式获取所有行政区划的 Java 示例代码：

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

class AdministrativeDivision {
    private String name;
    private List<AdministrativeDivision> subdivisions;

    public AdministrativeDivision(String name) {
        this.name = name;
        this.subdivisions = new ArrayList<>();
    }

    public String getName() {
        return name;
    }

    public List<AdministrativeDivision> getSubdivisions() {
        return subdivisions;
    }

    public void addSubdivision(AdministrativeDivision subdivision) {
        subdivisions.add(subdivision);
    }
}

public class AdministrativeDivisionExample {

    public static void main(String[] args) {
        AdministrativeDivision china = new AdministrativeDivision("中国");
        AdministrativeDivision beijing = new AdministrativeDivision("北京");
        AdministrativeDivision shanghai = new AdministrativeDivision("上海");
        AdministrativeDivision hebei = new AdministrativeDivision("河北");
        AdministrativeDivision jiangsu = new AdministrativeDivision("江苏");

        china.addSubdivision(beijing);
        china.addSubdivision(shanghai);
        china.addSubdivision(hebei);
        china.addSubdivision(jiangsu);

        AdministrativeDivision haidian = new AdministrativeDivision("海淀区");
        AdministrativeDivision chaoyang = new AdministrativeDivision("朝阳区");
        beijing.addSubdivision(haidian);
        beijing.addSubdivision(chaoyang);

        AdministrativeDivision pudong = new AdministrativeDivision("浦东新区");
        AdministrativeDivision minhang = new AdministrativeDivision("闵行区");
        shanghai.addSubdivision(pudong);
        shanghai.addSubdivision(minhang);

        List<String> allAdministrativeDivisions = getAllAdministrativeDivisions(china);
        for (String division : allAdministrativeDivisions) {
            System.out.println(division);
        }
    }

    public static List<String> getAllAdministrativeDivisions(AdministrativeDivision division) {
        List<String> allDivisions = new ArrayList<>();
        getAllSubdivisions(division, allDivisions);
        return allDivisions;
    }

    private static void getAllSubdivisions(AdministrativeDivision division, List<String> allDivisions) {
        allDivisions.add(division.getName());
        for (AdministrativeDivision subdivision : division.getSubdivisions()) {
            getAllSubdivisions(subdivision, allDivisions);
        }
    }
}

这个例子中，我们定义了一个 AdministrativeDivision 类来表示行政区划，每个行政区划都有一个名称和可能的子行政区划。然后，我们使用递归的方式遍历行政区划树，将所有行政区划的名称添加到一个列表中。最后，我们通过调用 `getAllAdministrativeDivisions` 方法来获取所有行政区划的列表，并在 `main` 方法中打印输出。你可以根据实际需要修改行政区划的结构和内容。希望能对你有所帮助！