Last updated...

[Tom Diamond]

Hello people,
Is there a smart way to include a "Last Updated" entry in a jsp? Something like finding when current file was last modified, perhaps?
Tom.

[japper]

I think jakarta has a tag library that will do this.
Check out http://jakarta.apache.org

[Tom Diamond]

Well, I searched all the tag libraries of jakarta project but I didn't find anything to fit...

[Tim Holloway]

There are 2 "last updated" time values, since technically you could consider a page compilation as an update, and depending on the options of your server, this could be much more recent than the source mod.
Your best best is probably to either use a smart editor or (and/or) a version control system. Most vcs's have some sort of ability to macro-expand certain variables such as the checkin timestamp.

[japper]

Sorry about that. I thought Jakarta had one.
I know of two:
One is at http://www.servletsuite.com/servlets/lastmod.htm
and the other is at http://www.dotjonline.com/taglib/lastmodified.jsp
Good luck.

[Anonymous]

This works.. (But as Tim mentioned, it picks up the last compilation time, and not the source file timestamp -- but this will be the case for the taglibs as well).

<%@ page import = "java.io.File, java.text.*, java.util.Date" %>
<% 
// get the current jsp or servlet
File f = new File(application.getRealPath(request.getServletPath()));
// create a locale-independent datetime formatter; parameters can be SHORT, MEDIUM, LONG or FULL
DateFormat df = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM);
// create a custom datetime formatter
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yy hh:mm:ss aa zzz");
%>
<pre>
Last Modified (locale-independent format): <%= df.format(new Date(f.lastModified())) %>
Last Modified (custom format)            : <%= sdf.format(new Date(f.lastModified())) %> 
</pre>

------------------
Miftah Khan
- Sun Certified Programmer for the Java� 2 Platform
- Sun Certified Web Component Developer for the Java� 2 Platform, Enterprise Edition

[Tom Diamond]

Thanx people!
You 've been very helpfull!
Tom.

[G Subrahmanyam]

Nice Reply