Using java how to add in-code generated jpg images to a word document without saving the file first

Using java how can I add in-code generated jpg images to a word document 开发者_如何学Cwithout saving the file first.

The word document needs to be created from scratch in Java (poi does not seem to do the images).

Per the comments on my question from plutext and trying this out. The docx4j is working really good.