Use the Sources Filtering properties page to determine the files and packages that are included in a JAR file for a specific .
You open the Sources Filtering properties page by choosing File > <active project name> Properties. In the Project Properties dialog, select Build > Sources Filtering.
DefaultConfiguration
),
you must uncheck the Use Values from "DefaultConfiguration" checkbox
at the top of the page to customize these options.The Filtering page lets you set the following options:
To see the list of files excluded by these two options, hold the cursor over the option. The tooltip lists the files to be excluded.
The Sources Used in Build window provides a file tree where you can identify files and packages to be included or excluded from the JAR file. Top level nodes are top level sources and packages. All files and packages are selected by default.
To include or exclude an item from the build: