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Posted to users@tomcat.apache.org by Vernon Wu <ve...@gatewaytech.com> on 2002/09/19 23:26:45 UTC

How can I achieve thread safe for context attributes?

I have an attribute stored in the servlet context scope. Various sessions can access it at any giving moment. It must be 
thread safe. How can achieve thread safe?

	CurrentUsers cs = (CurrentUsers)cxt.getAttribute(WebKeys.CurrentUsers);
	String user = (String)session.getAttribute(WebKeys.UserID);
      	cs.remove(user); // or other modification
      	cxt.setAttribute(WebKeys.CurrentUsers, cs);
 




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