Wrong Time with System.currentTimeMillis () (Java)

Question

I made a little program to test the System.currentTimeMillis (). And I have a strange result. This is my logs :

1    26-12-09 20:48:21 - [Log] lTime = 1261860501         


        

Answer 1

The method in question depends on the system clock and system clocks can have problems. See http://support.ntp.org/bin/view/Support/KnownOsIssues for a discussion of issues keeping the system clock accurate via the ntpd(8) daemon.

I also recommend http://www.vmware.com/pdf/vmware_timekeeping.pdf for a discussion on the accuracy of the system clock in VMWare. It also has as excellent discussion on system clocks in general.