newbie: show javadoc when coding in intellij

Hello vuthecuong,

In eclipse, if I move mouse over java class, eclipse will show as
tooltip the javadoc of that class.
which shortcut key show java doc of class in intelliJ?

Ctrl-Q

I strongly recommend you to open Help | Tip of the Day and browse through
the tips. This will make your work with IDEA much more efficient.

--
Dmitry Jemerov
Development Lead
JetBrains, Inc.
http://www.jetbrains.com/
"Develop with Pleasure!"

You can also set IDEA to auto popup the javadoc when editing. Go to File | Settings | IDE Settings | Code Completion - in the "Lookup List" section, select "Autopopup javadoc in (ms)" Again, this setting is for when actively editing. As Dmitry mentioned, ctrl+Q can be used when just reading through a file.