How to show the log information dynamic?

I’m a newer to vaadin and want to show the log info into the page dynamic.But I must to face two problems:

One: which component to show the log info?
           I want to use table, but don't know it is right.
           Are there any other method to operate this?
Two: the log info will be produced when the user operate.
     If I use the table to hold the log info, I want to use ICEPush.
     It can help the browser to know the changes in server.

Those are my questions and I don’t know my ideas whether right or wrong. Have you ever handle this requirement and how did you solve? I need your help, thank you very much!