Board Thread:Support Requests - Getting Technical/@comment-3271569-20130415015947/@comment-3335785-20130415225708

I'm guessing you're mixing up java and javascript judging by your title?

SWFObject might be good, but the problem you're going to face is getting it added to your wiki. It's not a given that Wikia will import it.

Uncyc have a script that embeds flash, search for "Embed flash movies" which has a corresponding template as seen in the script comments.