code: public void doBrowse(HttpServletRequest request, HttpServletResponse response)
              throws IOException, ServletException
      {
          if (!common.checkGet(request, response)) return;
          User user = common.getLoggedInUser(request);
          if (user == null) {
              common.pageSoftError(response, "Can't do /browse.  Nobody is logged in.");
              return;
          }
  
          DbxClientV2 dbxClient = requireDbxClient(request, response, user);
          if (dbxClient == null) return;
  
          String path = request.getParameter("path");
          if (path == null || path.length() == 0) {
              renderFolder(response, user, dbxClient, "");
          } else {
              String pathError = DbxPathV2.findError(path);
              if (pathError != null) {
                  response.sendError(400, "Invalid path: " + jq(path) + ": " + pathError);
                  return;
              }
              Metadata metadata;
              try {
                  metadata = dbxClient.files()
                      .getMetadata(path);
              }
              catch (GetMetadataErrorException ex) {
                  if (ex.errorValue.isPath()) {
                      LookupError le = ex.errorValue.getPathValue();
                      if (le.isNotFound()) {
                          response.sendError(400, "Path doesn't exist on Dropbox: " + jq(path));
                          return;
                      }
                  }
                  common.handleException(response, ex, "getMetadata(" + jq(path) + ")");
                  return;
              }
              catch (DbxException ex) {
                  common.handleDbxException(response, user, ex, "getMetadata(" + jq(path) + ")");
                  return;
              }
  
              path = DbxPathV2.getParent(path) + "/" + metadata.getName();
              if (metadata instanceof FolderMetadata) {
                  renderFolder(response, user, dbxClient, path);
              }
              else {
                  renderFile(response, path, (FileMetadata) metadata);
              }
          }
      }
docs: the contents of your files and folders and display them to you.