Module java.desktop
Package javax.print

## Interface DocPrintJob

All Known Subinterfaces:
  `CancelablePrintJob`, `MultiDocPrintJob`

    public interface DocPrintJob

This interface represents a print job that can print a specified document with a set of job attributes. An object implementing this interface is obtained from a print service.

### Method Summary

All Methods Instance Methods Abstract Methods
`void` `addPrintJobAttributeListener​(PrintJobAttributeListener listener, PrintJobAttributeSet attributes)` Registers a listener for changes in the specified attributes.
`void` `addPrintJobListener​(PrintJobListener listener)` Registers a listener for event occurring during this print job.
`PrintJobAttributeSet` `getAttributes()` Obtains this Print Job's set of printing attributes.
`PrintService` `getPrintService()` Determines the `PrintService` object to which this print job object is bound.
`void` `print​(Doc doc, PrintRequestAttributeSet attributes)` Prints a document with the specified job attributes.
`void` `removePrintJobAttributeListener​(PrintJobAttributeListener listener)` Removes an attribute listener from this print job.
`void` `removePrintJobListener​(PrintJobListener listener)` Removes a listener from this print job.

### Method Detail

#### getPrintService

    PrintService getPrintService()

Determines the `PrintService` object to which this print job object is bound.

Returns:
  `PrintService` object

#### getAttributes

    PrintJobAttributeSet getAttributes()

Obtains this Print Job's set of printing attributes. The returned attribute set object is unmodifiable. The returned attribute set object is a "snapshot" of this Print Job's attribute set at the time of the `getAttributes()` method call; that is, the returned attribute set's object's contents will not be updated if this Print Job's attribute set's contents change in the future. To detect changes in attribute values, call `getAttributes()` again and compare the new attribute set to the previous attribute set; alternatively, register a listener for print job events. The returned value may be an empty set but should not be `null`.

Returns:
  the print job attributes

#### addPrintJobListener

    void addPrintJobListener​(PrintJobListener listener)

Registers a listener for event occurring during this print job. If listener is `null`, no exception is thrown and no action is performed. If listener is already registered, it will be registered again.

Parameters:
  `listener` - the object implementing the listener interface
See Also:
  `removePrintJobListener(javax.print.event.PrintJobListener)`

#### removePrintJobListener

    void removePrintJobListener​(PrintJobListener listener)

Removes a listener from this print job. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this print job. If listener is `null`, no exception is thrown and no action is performed. If a listener was registered more than once only one of the registrations will be removed.

Parameters:
  `listener` - the object implementing the listener interface
See Also:
  `addPrintJobListener(javax.print.event.PrintJobListener)`

#### addPrintJobAttributeListener

    void addPrintJobAttributeListener​(PrintJobAttributeListener listener,
                                      PrintJobAttributeSet attributes)

Registers a listener for changes in the specified attributes. If listener is `null`, no exception is thrown and no action is performed. To determine the attribute updates that may be reported by this job, a client can call `getAttributes()` and identify the subset that are interesting and likely to be reported to the listener. Clients expecting to be updated about changes in a specific job attribute should verify it is in that set, but updates about an attribute will be made only if it changes and this is detected by the job. Also updates may be subject to batching by the job. To minimize overhead in print job processing it is recommended to listen on only that subset of attributes which are likely to change. If the specified set is empty no attribute updates will be reported to the listener. If the attribute set is `null`, then this means to listen on all dynamic attributes that the job supports. This may result in no update notifications if a job can not report any attribute updates.

If listener is already registered, it will be registered again.

Parameters:
  `listener` - the object implementing the listener interface
  `attributes` - the attributes to listen on, or `null` to mean all attributes that can change, as determined by the job
See Also:
  `removePrintJobAttributeListener(javax.print.event.PrintJobAttributeListener)`

#### removePrintJobAttributeListener

    void removePrintJobAttributeListener​(PrintJobAttributeListener listener)

Removes an attribute listener from this print job. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this print job. If the listener is `null`, no exception is thrown and no action is performed. If a listener is registered more than once, even for a different set of attributes, no guarantee is made which listener is removed.

Parameters:
  `listener` - the object implementing the listener interface
See Also:
  `addPrintJobAttributeListener(javax.print.event.PrintJobAttributeListener, javax.print.attribute.PrintJobAttributeSet)`

#### print

    void print​(Doc doc,
               PrintRequestAttributeSet attributes)
        throws PrintException

Prints a document with the specified job attributes. This method should only be called once for a given print job. Calling it again will not result in a new job being spooled to the printer. The service implementation will define policy for service interruption and recovery. When the print method returns, printing may not yet have completed as printing may happen asynchronously, perhaps in a different thread. Application clients which want to monitor the success or failure should register a `PrintJobListener`.

Print service implementors should close any print data streams (ie `Reader` or `InputStream` implementations) that they obtain from the client doc. Robust clients may still wish to verify this. An exception is always generated if a `DocFlavor` cannot be printed.

Parameters:
  `doc` - the document to be printed. It must be a flavor supported by this PrintJob.
  `attributes` - the job attributes to be applied to this print job. If this parameter is `null` then the default attributes are used.
Throws:
  `PrintException` - the exception additionally may implement an interface that more precisely describes the cause of the exception
  - `FlavorException`. If the document has a flavor not supported by this print job.
  - `AttributeException`. If one or more of the attributes are not valid for this print job.