> I had just download the JHotDraw but witj javadoc, there is lack
> off explaination,
You can generate the javadoc from the source, using a tool from the
Java 2 SDK, called javadoc ...
> I dunno how to start using it and how to
> implement it. Anyone can tell me where got detail tutorial for
> this?
AFAIK there isn't much documentation. One is supposed to know ... You
can dig down into some corners of the history of OO GUI development,
trying to find old publications about the original hotdraw framework,
and the idraw program and unidraw framework from interviews. But your
best bet is maybe to get a copy of the Design Pattern book by Gamma
(the hotdraw author), Helm, Johnson, and Vlissides (the unidraw
author). May of the patters described in the book are implemented in
JHotDraw.
You will have to do some significant reading and learning if you want
to understand JHotDraw. It is some kind of a framework research
project, not some ready-to-use convenience API.