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<% @ page  import = " java.io.*, java.util.*, java.text.* "   %>   
 
 
 
<%!   
 
     /**  
 
     *  If returns true, then should return a 304 (HTTP_NOT_MODIFIED) 
 
      */   
 
     public   static   boolean  checkFor304( HttpServletRequest req,  
 
                                       File file )  
 
    {  
 
         //   
 
         //   We'll do some handling for CONDITIONAL GET (and return a 304)  
 
         //   If the client has set the following headers, do not try for a 304.  
 
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