Using vars declared in scriptlets in EL & vice versa

I'd like to reference the same variable in both a scriptlet and in some EL on a JSP page. Is there a different way to do this other than setting a pageContext attribute? For example, I'd like to do something like this:
Won't work:
<%
String theString;
// manipulate the string
%>
${theString}
Does work (but requires setting the pageContext attribute at the end of the scriptlet):
<%
String theString;
// manipulate the string
pageContext.setAttribute("stringFoo", theString);
%>
${stringFoo}Is there a better way to do this? I played around with jsp declarations and c:sets but to no avail. Thanks in advance.

Thanks, but it doesn't seem to be working for me, which is confusing. I am using jsp:useBean b/c my CTO doesn't want to use struts, so hopefully it's doable. Also, I tried using bean:define and kept getting the exception at the end of this post. Probably something I messed up when installing struts.
Here is some code that outputs the following:
1. outside scriptlet:
2. in scriptlet: world
3. outside scriptlet: foo
4. in scriptlet: worldLooks like ${test} is not corresponding to the bean called "test." Why would that be? And how then does the scriptlet know what the test variable is then if it is not associated with the useBean? I don't have any other type declaration on the page...
<jsp:useBean id="test" class="java.lang.String" scope="session"/>
<%
         test = "world";
%>
1. outside scriptlet: <c:out value="${test}"/>
<%
     out.println("2. in scriptlet: " + test);
%>
<c:set var="test" value="foo" />
3. outside scriptlet: <c:out value="${test}"/>
<%
     out.println("4. in scriptlet: " + test);
%>Now here's that exception I was getting when trying to do a simple
<bean:define id="test" name="test" type="java.lang.String"/>
java.lang.NoClassDefFoundError: org/apache/struts/util/MessageResources
     org.apache.struts.taglib.bean.DefineTag.<clinit>(DefineTag.java:47)
     sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
     sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
     java.lang.reflect.Constructor.newInstance(Unknown Source)
     java.lang.Class.newInstance0(Unknown Source)
     java.lang.Class.newInstance(Unknown Source)
     org.apache.jasper.runtime.TagHandlerPool.get(TagHandlerPool.java:116)
     org.apache.jsp.content.campaign.advancedCriteriaContent_jsp._jspService(advancedCriteriaContent_jsp.java:110)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
     org.apache.jsp.template.campaign_jsp._jspService(campaign_jsp.java:121)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
     org.apache.jsp.page.campaign.advancedCriteria_jsp._jspService(advancedCriteria_jsp.java:87)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

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Big Q: "Why the compiler didnt complain about it?"
it should be "duplicate var declaration" sort of
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> private String s; // class var declaration, var name is "s"
>
private void f1(){
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>
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Using vars declared in scriptlets in EL & vice versa

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