Sorry to disappoint you but i've already did all that stuff.
I've even created my own EditorKit, HTMLDocument, And extended the parser... The problem isn't that simple.
Moreover, you've noticed that when you don't put spaces between & n b s p it does'nt appear on the forum message (as in yours)
. My question was actually how to insert content (as spaces) and not how to set a JEditorPane to read and write HTML, caus' this, i know already...