Thank you for response if you notice in Eclipse you can see javadoc by pointing mouse over a class , method .by pressing f2 it will focus on it (by opening a resizeable textpane) while in Vs 2003 one can see documentation on a dedicated view in left/right /... side. The view is An HTML viewr so you can easyly navigate inside it.
I do not know is there something like this for eclipse ?
There are a number of options (Eclipse Views) such as the JavaDoc View and the Declaration view. Or F3 to bounce through to a method's source. Ypu couldn't just generically bounce through to a class's JavaDocs, because unfortunately, not everyone provides JavaDocs (though they SHOULD) and even if they do, you have to have a (list of) place(s) to retrieve the compiled docs from.
Although, as far as I can figure from your description, you're looking for some sort of popup Winhelp app, like maybe what you see when you browse JavaDocs in a framed HTML display.
Actual WinHelp support wouldn't be appropriate, since it's only applicable to Windows, and some of us do most of our Eclipse work on non-Windows machines, so we'd not appreciate a feature we couldn't have in both places. Plus, IIRC, WinHelp's been known to possess a security vulnerability or two.
The Eclipse help facility can be customed, BTW. It's using JavaHelp, I believe.
I've never found the Eclipse help features to be deficient, myself.
An IDE is no substitute for an Intelligent Developer.