I have a loop that goes through all the news items we have on our site. One of the fields is date ${newsitem.value[\'Date\']}, given in millliseconds. I\'d like
Yes the JSTL formatDate tag should do the job in combination with changing the Timestamp value into a date object (which is required to work around the exception mentioned in your comment).
Ensure that you have properly defined the fmt prefix in the JSP declarations
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
Render the output, convert the time stamp to a date value first. I'm using yyyy-MM-dd as the format pattern, the dateFormat tag supports other formatting options as well.