title: JSP duplicate if included multiple time
body: <p>let say i have this global.jsp that include a database configuration and connection.</p>
  
  <p>I know this is not the best way to do this, and I didn't allow to use anything else then a pure jsp. The problem is when is this file is included in more than once then i got re-declaration error. Is there any way to do this ? something like IFDEF on C perhaps.</p>
  
  <p>Thanks.</p>