[news.eclipse.tools] Java builders and separate projects

[jamsden@xxxxxxxxxx]

When I have multiple, independent Java projects open in my workspace, 
sometimes a change to a Java file in one project causes the other projects 
to get built even though there are no dependencies. Is this supposed to 
happen? If I close the projects I'm not working on, will this stop this 
rebuilding?

What does closing a project mean? Why would I want to keep some closed?

If a project built and contributed compilation errors to the task view, 
how can I remove these messages if I'm not working on that project for a 
while?