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copied!<p>I think what you're looking for here is request, session or application data.</p> <p>In a servlet you can add an object as an attribute to the request object, session object or servlet context object:</p> <pre><code>protected void doGet(HttpServletRequest request, HttpServletResponse response) { String shared = "shared"; request.setAttribute("sharedId", shared); // add to request request.getSession().setAttribute("sharedId", shared); // add to session this.getServletConfig().getServletContext().setAttribute("sharedId", shared); // add to application context request.getRequestDispatcher("/URLofOtherServlet").forward(request, response); } </code></pre> <p>If you put it in the request object it will be available to the servlet that is forwarded to until the request is finished:</p> <pre><code>request.getAttribute("sharedId"); </code></pre> <p>If you put it in the session it will be available to all the servlets going forward but the value will be tied to the user:</p> <pre><code>request.getSession().getAttribute("sharedId"); </code></pre> <p>Until the session expires based on inactivity from the user.</p> <p>Is reset by you:</p> <pre><code>request.getSession().invalidate(); </code></pre> <p>Or one servlet removes it from scope:</p> <pre><code>request.getSession().removeAttribute("sharedId"); </code></pre> <p>If you put it in the servlet context it will be available while the application is running:</p> <pre><code>this.getServletConfig().getServletContext().getAttribute("sharedId"); </code></pre> <p>Until you remove it:</p> <pre><code>this.getServletConfig().getServletContext().removeAttribute("sharedId"); </code></pre>

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