public static List<FileSystemProvider> installedProviders ()

Returns a list of the installed file system providers.

The first invocation of this method causes the default provider to be initialized (if not already initialized) and loads any other installed providers as described by the FileSystems class.

Returns:  An unmodifiable list of the installed file system providers. The list contains at least one element, that is the default file system provider

Exceptions:
ServiceConfigurationError     When an error occurs while loading a service provider