Class ReferenceUriSchemesSupported is a printing attribute class an enumeration, that indicates a "URI scheme," such as "http:" or "ftp:", that a printer can use to retrieve print data stored at a URI location. If a printer supports doc flavors with a print data representation class of "java.net.URL", the printer uses instances of class ReferenceUriSchemesSupported to advertise the URI schemes it can accept. The acceptable URI schemes are included as service attributes in the lookup service; this lets clients search the for printers that can get print data using a certain URI scheme. The acceptable URI schemes can also be queried using the capability methods in interface PrintService. However, ReferenceUriSchemesSupported attributes are used solely for determining acceptable URI schemes, they are never included in a doc's, print request's, print job's, or print service's attribute set.

The Internet Assigned Numbers Authority maintains the official list of URI schemes.

Class ReferenceUriSchemesSupported defines enumeration values for widely used URI schemes. A printer that supports additional URI schemes can define them in a subclass of class ReferenceUriSchemesSupported.

IPP Compatibility: The category name returned by getName() is the IPP attribute name. The enumeration's integer value is the IPP enum value. The toString() method returns the IPP string representation of the attribute value.