Check your log messages by typing following in Terminal while looking for the time stamp for when it occurred.

syslog |grep -i "Wake reason"


which will give you a comprehensive report only for wake up reasons.

UPDATE:

Looking at your log now, it all looks normal. 

Be aware that the only time your computer can do some housekeeping is during the sleep time. That is intended by design. 

However, to prevent unwanted wake ups disable the wake for wifi network access.

iMac wakes up without any noticeable reason
I have two projects in Netbeans that are closely linked. They are separate projects because one of the projects is a util package that could be used in the future for another project. Is there a way to configure Netbeans so that the Javadoc generated for the main project will include links to the objects defined in the util project instead of listing the full package path?

Edit: I have found how to do it. In Project Properties > Build > Documenting you can set Additional Javadoc Options. The option to use is -link and then the URL of the documentation directory. However, I can only get it to work with an absolute link and am having trouble getting the relative link to work.

-link file:///A:\B\C\Util\dist\javadoc //this works
-link file: ..\..\..\Util\dist\javadoc //this doesn't works


Both project folders are in directory C, so I think that should be the correct relative path based on the documentation.
