Filesystems in the IDE

The Filesystems tab of the Explorer displays (such as directories and JAR files) that you work with in the IDE. By default, filesystems that are displayed there are in the Java classpath.

You can develop your sources in the Development filesystem (a directory that is part of the NetBeans installation directory and includes the examples and tutorial packages) or you can your own filesystems in the IDE.

You can configure each mounted filesystem separately, determining such things as whether the filesystem is hidden or displayed in the Explorer, whether it is writable, and whether its files can be compiled, run, debugged, or used as Javadoc documentation in the IDE.

The order of filesystems under the Filesystems tab is also significant. If files with the same name and package exist in two different mounted directories, the first is loaded during execution or debugging, even if you have selected the second one.

See also
Mounting a Filesystem

Opening a File Not in a Mounted Filesystem

Changing the Mount Order of Filesystems

Disabling Compilation for a Filesystem

Configuring a Mounted Filesystem

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