Fetch list of file entries of any folder in Liferay Document and Media

We need a list of documents (their titles shown) and those titles to link to the documents for downloading.

Refer below code,

 Long parentFolderId = DLFolderConstants.DEFAULT_PARENT_FOLDER_ID;  
 DLFolder folder = DLFolderLocalServiceUtil.getFolder(groupId, parentFolderId, dirName);  
 ThemeDisplay themeDisplay = (ThemeDisplay) renderRequest.getAttribute(WebKeys.THEME_DISPLAY);  
  List<DLFileEntry> fileEntryService = null;  
  try {  
       fileEntryService = DLFileEntryLocalServiceUtil.getFileEntries(themeDisplay.getScopeGroupId(),folder.getFolderId(),-1, -1, null); //12345 is folderId  
  } catch (SystemException e) {  
       e.printStackTrace();  
  }  
 for(DLFileEntry fileEntryObj : fileEntryService){  
      System.out.println(fileEntryObj.getTitle());   
 }  

We can use below code in velocity template,

 #set($service = $serviceLocator.findService("com.liferay.portlet.documentlibrary.service.DLFileEntryLocalService"))  
 #set($gid = $getterUtil.getLong($request.get("theme-display").get("scope-group-id")))  
 #set($fid = $getterUtil.getLong($folderId.getData()))  
 #set($files = $service.getFileEntries($gid, $fid))  
 #foreach($doc in $files)  
   #set($uet = $httpUtil.encodeURL($htmlUtil.unescape($doc.getTitle())))  
   <a href="/documents/$gid/$fid/$uet">$doc.getTitle()</a><br />  
 #end