The Sources panel enables you to view the location of the project folder, manage source and test package folders, as well as set the source level of the packages which the IDE will use. You open the CDC Project Properties dialog box by right-clicking any CDC project node and choosing Properties.
Use the buttons on the right side of the panel to add, remove, and change the order of classpath elements.
You can have multiple source roots in a CDC project, with the following exceptions:
You can use the Source/Binary Format combo box to set the lowest Java platform version with which the generated Java code should be compatible. This setting corresponds to the javac -source option. Setting the source/binary format helps prevent you from using Java language constructs that are not available in the platform version to which you want to deploy. However, setting the source/binary format does not ensure that the platform APIs are used compatibly with that platform version. To make sure that your application is fully compatible with an earlier Java platform version, you need to switch to the Libraries tab and set the Java Platform setting to the minimum version on which you plan to deploy.