How to use JDK5.0 new feature code in tomcat 5.5.9, jsp files

Hi Everyone:
I am trying to use JDK5.0 new feature code -- for loop in jsp file , but got compile error , i try the same code in the java file which is working fine. i am wondering is it tomcat jsp compiler problem ?
following is my code and error msg
/* jdk 5.0 new feature, but cannot use in this jsp file, tomcat version? or setting problem ?
for (Thumbnail thumbnail : thumbnailList){
     System.out.println(thumbnail.getAbsolutePath());
// following is working fine in jsp
Iterator iter = thumbnailList.iterator();
          while(iter.hasNext()){
               Thumbnail thumbnail = (Thumbnail) iter.next();
               out.print(thumbnail.getAbsolutePath()+"<BR>");
     %>
the error msg is :
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 16 in the jsp file: /test/testImageGallery.jsp
Generated servlet error:
Syntax error on token(s), misplaced construct(s)
An error occurred at line: 16 in the jsp file: /test/testImageGallery.jsp
Generated servlet error:
Syntax error on token ")", : expected
     org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
     org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
     org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:397)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:288)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
     org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:293)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
I am using fedora core 4 x64bit , tomcat 5.5.9,
java -version
java version "1.5.0_04"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_04-b05)
Java HotSpot(TM) 64-Bit Server VM (build 1.5.0_04-b05, mixed mode)
tomcat settings
tomcat5/bin/catalina.sh run
Using CATALINA_BASE: /home/normal/tomcat5
Using CATALINA_HOME: /home/normal/tomcat5
Using CATALINA_TMPDIR: /home/normal/tomcat5/temp
Using JRE_HOME: /home/normal/jdk1.5.0_04

The JDT compiler that Tomcat installs by default is only 1.4 compliant.
You can use ant instead:
remove the common/lib/jasper-compiler-jdt.jar file
place ant.jar file from the latest Ant distribution in the common/lib folder.
If you do this, you also need to use the "javac" argument to catalina.sh.
Documentation reference: http://jakarta.apache.org/tomcat/tomcat-5.5-doc/jasper-howto.html

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