I'm trying out the JIRA report plugin tutorial: https://developer.atlassian.com/display/JIRADEV/Plugin+Tutorial+-+Creating+a+JIRA+Report
Working on the code in Eclipse I get a lot of error messages about imports that cannot be resoved. It seems pretty random which of them are OK, and which one is not. Compiling and running the plugin works fine, but those messages are pretty annoying:

I'm usually not developing in Eclipse or Java so it might be some setting I'm missing. I'm pretty sure though that the setup is according to what is described at Atlassian's developer website.
@Atlassian: Could be a good idea to update this example since the OutlooDateManager is deprecated.