How to retrive dynamic directory structure from data base and show it

Question

i want to display a directory structur on jsp my problem is that i want to read it from a database how i can read
a tree structure i found a function to read directry structur but if i use this function i am not able to find who the parent is ? this is the function i found cna any one help me ?
public void iterate(File someDirectory) {
Vector allFiles = new Vector();
File[] dirContents = someDirectory.listFiles();
for (File f : dirContents) {
allFiles.add(f);
for (int i = 0; i < allFiles.size(); i++) {
File file = (File) allFiles.get(i);
if (file.isDirectory()) {
dirContents = file.listFiles();
for (File f : dirContents) {
allFiles.add(f);
// Process 'file' or do whatever
}

Answer 1

Thanks for reply i am not actualy deling with files i am creating a web application in which i am having organize functionality
user creat folders and put there document in that like out look user can creat folder inside folder
i am storing tham in a database table my problem is how to retrive them so i can show them as a tree structur
i am using this code to show on jsp
{color:#808000}<table>
<tr>
<td >
<ul class="flipMenu">
<li><span class="menu">Folder</span>
<ul>
<c:forEach var="folderList1" items="${folderList}" >
{color}
{color:#808000}<li ><a class="submenu25" id='<c:out value="${folderList1.id}"/>' href="folderAgreement.htm?folderid=<c:out value="${folderList1.id}"/>" onmouseup="a('<c:out value="${folderList1.id}"/>');" ><span ><c:out value="${folderList1.name}" /> T</span></a>
<ul>
<li> <a href="# onclick="window.open('createSubFolder.htm?folderid=<c:out value="${folderList1.id"/>&agreetitle=<c:out value="${agreements.title}"/>', 'invite_wnd', 'height=700, width=800, status=no, menubar=no, toolbar=nu, location=400'); return false;">Add Folder
</li>
<li> <a href="folderDetail.htm?folderid=<c:out value=${folderList1.id"/>&flag=folder"><span class="submenu2">Detail</span>
</li>
<li> <a id="<c:out value="${folderList1.id}"/>" href="folderDelete.htm?folderid=<c:out value="${folderList1.id}"/>&flag=folder" onclick="conformDelete('<c:out value="${folderList1.id}"/>')" ><span class="submenu2">Delete Folder</span></a>
</li>
</ul>
</li>
</c:forEach>
{color}
{color:#808000}</ul>
</li>
</ul>
</td>
</tr>
</table>{color}