Linking an external folder as source or output folder in Eclipse

Today, I read this port:
Linking an external folder to Eclipse/Flex Builder Project, which explains how to add an external folder as source code in Eclipse.
1. Right click on the project -> new -> Folder.
2. Click on the Advanced button.
3. Check the checkbox with label : "Link to folder in the file system".
4. Then set it as source folder.

This makes me find way to solve my problem that has been bother me lately:
I want to save some projects to Google drive, so I can open and synchronize it in computers at company or home.
Obviously I don't want to import the built classes to GDrive, as the class files will change frequently. GDrive doesn't provide us a simple way to mark some folders as no-synchronize.


Now I can solve my problem with previous solution:
1. Create a folder bin which links to folder in the system.
2. Change your output folder to the previously created folder.

Source:
http://deviltechie.wordpress.com/2010/12/06/linking-an-external-folder-to-eclipse-flex-builder-project