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I'm using NetBeans 5.0 on java 1.5.0_06. I have installed the latest apisupport that is available on the Update Center. I also installed the API Documentation from Update Center. I downloaded the sources for NetBeans 5.0 and added them to the NetBeans Platform (I only have one in the NetBeans Platform Manager). Now when I press CRTL-SHIFT-SPACE on NetBeans classes or methods I get a popup frame stating that the JavaDocs were not found. If I press CRTL-mouse_click on a NetBeans class I get a status message stating that the source for the class was not found.
The javadoc documentation from Autoupdate center is installed to Default NetBeans platform. You can check it in Tools|NetBeans Platforms. The javadoc is shown only for classes on classpath. For example add org.openide.filesystems module on classpath and try show code completion for FileObject class. Does it works?
I see the docs in the default platform. I have all the classes I use in classpath, because the project compiles. The strange thing is that after restarting the IDE everything works... Now I have only the sources specified and I can see javadocs too. Hmm....
Refresh issue if restarting IDE helps, so lower priority I guess. If you have sources, then popup Javadoc will work by parsing sources (but e.g. View | Documentation Indices still needs real Javadoc).
*** This issue has been marked as a duplicate of 72963 ***
anyway could not reproduce in 5.5 rc1 - started ide - added sources for ide in platform manager - created module - declared module dependency on e.g. window system api - created some class, typed "TopComponent tc = null;" - invoked ALT+O on "TopComonent" -> class was opened OK without restart