# Package javax.print.event

Package javax.print.event contains event classes and listener interfaces.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  PrintJobAttributeListener | Implementations of this interface are attached to a `DocPrintJob` to monitor the status of attribute changes associated with the print job.
  PrintJobListener | Implementations of this listener interface should be attached to a `DocPrintJob` to monitor the status of the printer job.
  PrintServiceAttributeListener | Implementations of this listener interface are attached to a `PrintService` to monitor the status of the print service.

- Class Summary
  Class | Description
  --- | ---
  PrintEvent | Class PrintEvent is the super class of all Print Service API events.
  PrintJobAdapter | An abstract adapter class for receiving print job events.
  PrintJobAttributeEvent | Class PrintJobAttributeEvent encapsulates an event a PrintService reports to let the client know that one or more printing attributes for a PrintJob have changed.
  PrintJobEvent | Class `PrintJobEvent` encapsulates common events a print job reports to let a listener know of progress in the processing of the `DocPrintJob`.
  PrintServiceAttributeEvent | Class PrintServiceAttributeEvent encapsulates an event a Print Service instance reports to let the client know of changes in the print service state.

## Package javax.print.event Description

Package javax.print.event contains event classes and listener interfaces.

They may be used to monitor both print services (such as printers going on-line & off-line), and the progress of a specific print job.

Please note: In the javax.print APIs, a null reference parameter to methods is incorrect unless explicitly documented on the method as having a meaningful interpretation. Usage to the contrary is incorrect coding and may result in a run time exception either immediately or at some later time. IllegalArgumentException and NullPointerException are examples of typical and acceptable run time exceptions for such cases.

Since:
  1.4

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