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javax.servlet.UnavailableException: Clase introuvable !!!! at Forum_bd2.init( at javax.servlet.GenericServlet.init( at com.sun.web.core.ServletWrapper.loadServlet( at com.sun.web.core.ServletWrapper.handleRequest( at com.sun.web.core.InvokerServlet.service( at javax.servlet.http.HttpServlet.service( at com.sun.web.core.ServletWrapper.handleRequest( at com.sun.web.core.Context.handleRequest( at