Regular expression differences between java.net and javascript?

I am working on a multi-platform system. We would like to use a regular expression to validate strings in a specific format. The regular expression will be written once in db and used by three different platforms. Do you know if there are differences in the way the regular expression is written? If so, is it completely different or are only a few things different?

Here is an example:

[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}

Hi