The Sources panel of the Project Properties dialog box enables you to view the project folder location, to manage source folders, and to set the source/binary format of the packages that the IDE will use. You can open the Project Properties dialog box from the Projects window by right-clicking a project and choosing Properties. Then select Sources in the Categories list on the left side.
You can change the location of your web pages by clicking the Browse button next to the Web Pages Folder field.
Use the buttons on the right side of the Sources panel to add, remove, and change the order of packages. Choosing Add enables you to add an additional source root. You can have multiple source roots in a standard project, with the following exceptions:
If you have a source root that you want to use with several projects, you must create a separate project for the source root and set up compilation dependencies between the projects.
Setting the Source/Binary FormatYou 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.