Not with the Table properties dialog. Can add a class from the Text editor.
There is a style field under table > table properties > advanced (see screenshot: http://imgur.com/rEg6YZw). I though this would be the place where you add classes?
This doesn’t appear to work.
I can tell my clients to add a classes in the text view. But since a lot of them are not familiar with HTML and CSS, it would be nice if they could just type in the style you want in table properties.
+1 for you TheMightyWrighty – thats exactly my case.. I want my clients to be able to select a predefined class or just be able to add a class WITHOUT using the text-editor, because just like you said, most of my clients are not familie with HTML and CSS.
Yeah, that will be a nice feature for tables. TinyMCE already has something similar for (the native) links and images dialogs. A list of class names can be passed in the settings.