To be more precise about the risks you are about to take: the author of the blog gives you a compiled piece of java, doesn't provide the source code you can review and compile yourself after making sure there is no security issue with that code.

Being you I wouldn't risk to get fired because of downloading and running a piece of java found online and which can be harmful as you have no (simple) way to look at the code itself. If you would be used to compile/decompile and read java you would write it yourself (the doc and some MOS documents provides most of the pieces of code required), therefore you are really about to to make a bet: "is that a clean piece of code or will I get fired because introducing something harmful in the company network?".

Make sure to perfectly understand the implications of what you try to do before to do it.

Nope, but you can look at the official doc and MOS documents which give you more details on how to code that yourself (= safe code as it's done by you internally and can be easily audited if needed as you have the source).

BI Publisher can generate content on shared drives, OBIEE Answers with agents can send it around by email or execute actions like the one in the blog uses.