Tomcat showing wrong date/time

[Dan Gunawan]

Hi all,

Funny thing happened today.

Our testing services was carrying out test on apps deployed on Tomcat 5.5, which OS and JVM have been patched for the new DST times for New Zealand. Our new DST starts at 2am Oct 1st.

After patching both the JVM and OS they moved the date on the server (Solaris 9) forward to Oct 1st, and opened a page from the application that was deployed on Tomcat.

The page (jsp) shows a date and time on a using

  
request.getSession(false).getCreationTime()

Funnily enough the above code showed the date and time that matched the client machine's date/time, and not the server's.

Thus it showed 21 August 2007 and not 1 October 2007.

This was rectified by restarting Tomcat. However I'm curious to find out why/how Tomcat was holding to the previous date/time.

Any idea? Thanks for your opinions.

[Joan Horta Tosas]

That's because the Java classes for the Date used by the session where loaded before the change. Java classes are not hot redeployable, just some application/web servers do redeploys and only in some especific dirs.