code: public Response delete(Session session, String path, String lockTokenHeader)
     {
        try
        {
           if (lockTokenHeader == null)
           {
              lockTokenHeader = "";
           }
  
           Item item = session.getItem(path);
           if (item.isNode())
           {
              Node node = (Node)item;
              if (node.isLocked())
              {
  
                 String nodeLockToken = node.getLock().getLockToken();
  
                 if ((nodeLockToken == null) || (!nodeLockToken.equals(lockTokenHeader)))
                 {
                    return Response.status(HTTPStatus.LOCKED).entity("The " + path + " item is locked. ").type(
                       MediaType.TEXT_PLAIN).build();
                 }
              }
           }
           item.remove();
           session.save();
           return Response.status(HTTPStatus.NO_CONTENT).build();
  
        }
        catch (PathNotFoundException exc)
        {
           return Response.status(HTTPStatus.NOT_FOUND).entity(exc.getMessage()).build();
  
        }
        catch (RepositoryException exc)
        {
           return Response.status(HTTPStatus.FORBIDDEN).entity(exc.getMessage()).build();
        }
     }
docs: Webdav Delete method implementation.
  
  @param session current session
  @param path file path
  @param lockTokenHeader lock tokens
  @return the instance of javax.ws.rs.core.Response