On the next page, Select "Product" source folder and click Remove.
Type "Product/deliverables" in Default output folder field.
Then click on Add Folder....
In New Source Folder dialog, type "sources" in the Folder name field.
Click Advanced. Check Link to folder in the file system.
Click Browse.... and choose the "sources" directory in "Product".
Click OK to close the dialog.
Click again on Add Folder....
In Source Folder Selection dialog, click on Create New Folder...
Type "deliverables" in the Folder name field.
Click Advanced. Check Link to folder in the file system.
Click Browse.... and choose the "deliverables" directory in "Product".
Click OK twice to close the two dialogs.
You project setup now looks as follows:
Expand "Product/deliverables" and select Excluded
Click on Edit... and click on Add... in Exclusion patterns part of the Inclusion and Exclusion Patterns dialog
Type "libraries/" in Add Exclusion Pattern dialog and click OK to validate and close the dialog
Click OK to close the dialog.
Your project source setup now looks as follows:
Open project properties (using Alt-Enter or contextual menu)
Select Java Build Path page and go to Libraries tab
Click on Add JARs... and expand "Product" hierarchy to select jar files in "libraries" directory
Working with build paths
Creating a new Java project
Creating a Java project with source folders
Creating a new source folder
Using the Package Explorer