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1
+1  Q: 

how to make my java app get global time from some online clock

I am making a distributed java app for which I need both parts of the app to run on one standard time. Since system times can be different I was thinking if java API contains some class to download time from a standard online source?

+2  A: 

You need to use the NTP (Network Time Protocol) protocol:

http://en.wikipedia.org/wiki/Network_Time_Protocol

The following link contains some reference Java NTP Client code for interacting with an NTP server:

http://psp2.ntp.org/bin/view/Support/JavaSntpClient

Jon  2010-03-24 19:08:53

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