如何在java中按"/“拆分，并以树的形式分层存储？

import java.util.HashMap;
import java.util.Map;

class TreeNode {
    String name;
    Map<String, TreeNode> children;

    public TreeNode(String name) {
        this.name = name;
        this.children = new HashMap<>();
    }
}

public class TreeStorage {
    private TreeNode root;

    public TreeStorage() {
        this.root = new TreeNode("");
    }

    public void insert(String path) {
        String[] parts = path.split("/");
        TreeNode current = root;
        for (String part : parts) {
            if (!current.children.containsKey(part)) {
                TreeNode newNode = new TreeNode(part);
                current.children.put(part, newNode);
            }
            current = current.children.get(part);
        }
    }

    public TreeNode getRoot() {
        return root;
    }

    public static void main(String[] args) {
        TreeStorage storage = new TreeStorage();
        storage.insert("folder1/folder2/file1.txt");
        storage.insert("folder1/folder3/file2.txt");
        storage.insert("folder1/file3.txt");

        TreeNode root = storage.getRoot();
        printTree(root, 0);
    }

    private static void printTree(TreeNode node, int level) {
        for (int i = 0; i < level; i++) {
            System.out.print("\t");
        }
        System.out.println(node.name);
        for (TreeNode child : node.children.values()) {
            printTree(child, level + 1);
        }
    }
}