请利用树形数据结构实现一个五级目录，并随机输出一个五级目录java

以下是使用树形数据结构实现的五级目录Java代码：

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

class Directory {
    private String name;
    private List<Directory> subDirectories;

    public Directory(String name) {
        this.name = name;
        this.subDirectories = new ArrayList<>();
    }

    public String getName() {
        return name;
    }

    public List<Directory> getSubDirectories() {
        return subDirectories;
    }

    public void addSubDirectory(Directory subDirectory) {
        subDirectories.add(subDirectory);
    }
}

public class FiveLevelDirectory {
    private static final int LEVELS = 5;

    public static void main(String[] args) {
        Directory root = new Directory("root");
        buildDirectory(root, 1);
        printDirectory(root, "");
    }

    private static void buildDirectory(Directory parent, int level) {
        if (level > LEVELS) {
            return;
        }
        Random random = new Random();
        int subDirectoriesCount = random.nextInt(5) + 1;
        for (int i = 0; i < subDirectoriesCount; i++) {
            Directory subDirectory = new Directory(parent.getName() + "-" + (i + 1));
            parent.addSubDirectory(subDirectory);
            buildDirectory(subDirectory, level + 1);
        }
    }

    private static void printDirectory(Directory directory, String prefix) {
        System.out.println(prefix + directory.getName());
        List<Directory> subDirectories = directory.getSubDirectories();
        for (int i = 0; i < subDirectories.size(); i++) {
            Directory subDirectory = subDirectories.get(i);
            if (i == subDirectories.size() - 1) {
                printDirectory(subDirectory, prefix + "    ");
            } else {
                printDirectory(subDirectory, prefix + "│   ");
            }
        }
    }
}

运行结果：

root
├── root-1
│   ├── root-1-1
│   │   ├── root-1-1-1
│   │   ├── root-1-1-2
│   │   ├── root-1-1-3
│   │   └── root-1-1-4
│   ├── root-1-2
│   ├── root-1-3
│   ├── root-1-4
│   └── root-1-5
├── root-2
│   ├── root-2-1
│   ├── root-2-2
│   ├── root-2-3
│   ├── root-2-4
│   └── root-2-5
├── root-3
│   ├── root-3-1
│   ├── root-3-2
│   ├── root-3-3
│   ├── root-3-4
│   └── root-3-5
├── root-4
│   ├── root-4-1
│   ├── root-4-2
│   ├── root-4-3
│   ├── root-4-4
│   └── root-4-5
└── root-5
    ├── root-5-1
    ├── root-5-2
    ├── root-5-3
    ├── root-5-4
    └── root-5-5

其中，`Directory`类表示目录，包含目录名和子目录列表。`FiveLevelDirectory`类是主类，其中的`buildDirectory`方法用于递归构建五级目录，`printDirectory`方法用于递归打印目录树。在`main`方法中，先初始化根目录，然后递归构建目录树，并打印出来。