Синхронизация responce в сервлете

public AbstractPage lookupPage(HttpServletRequest request,
HttpServletResponse response) {
AbstractPage ret = null;
HttpSession sess = null;
m_rp = new RequestProcessor(request, true);
...

public abstract class AbstractPage {
  protected static StringTemplateGroup templateLib;
  private HttpServletRequest m_request;
  private HttpServletResponse m_response;
  private PrintWriter m_out;
 
  public static void init() {
    try {
      String root = new usf_sm.tools.EnvVars().getEnv('USF_SM_ROOT');
      templateLib = new StringTemplateGroup('group',root + '/lib/templates');
      //templateLib.setRefreshInterval(0);
    } catch (Exception e) {
      System.err.println('AbstractPage.init: ' + e.toString());
    }
  }
 
   public AbstractPage(HttpServletRequest request,
                       HttpServletResponse response
                       )
   {
     try {
       m_request = request;
       m_response = response;
       m_out = response.getWriter();
     } catch (Exception e) {
       System.out.println('AbstractPage: ' + e.getMessage());
     }
   }
 
   public void generate() throws ServletException {
     try {
       StringTemplate pageST = templateLib.getInstanceOf('home_page');
       
       StringTemplate bodyST = body();
 
       if (bodyST != null) {
         pageST.setAttribute('html', bodyST);
         pageST.setAttribute('server',new Preferences().GetServer());
       }
       m_out.println(pageST);
       m_out.close();
         
       // debug
       File f = new File('c:/test0.html');
       f.createNewFile();
       FileOutputStream fos = new FileOutputStream(f);
       fos.write(pageST.toString().getBytes());
       fos.close();
 
     } catch (Exception e) {
       System.out.println('AbstractPage::generate: ' + e.getMessage());
       throw new ServletException(e.getMessage());
     }
   }
 
   /** Subclasses override this method to return the body of page to
    *  display
    */
   protected abstract StringTemplate body() throws Exception;
 
}
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