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Showing Server side Variables on JSP

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Hello All,
I am new to Struts. I need to know how can the server variables be shown on a JSP page. For Example I have a list in an action class and I want to iterate it on a JSP page using Struts' <logic:iterate>. Then in action class's execute method I ll have to put the list in session. Is there any other method like in Spring we put everything into a HashMap and it is available to JSP page. Does anyone know of the session alternative. An Example will be better.
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To make that "list" accessible on JSP page, you have to put that "list" in any one of the scope.
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