public abstract class PrinterJob extends Object
PrinterJob class is the principal class that controls printing. An application calls methods in this class to set up a job, optionally to invoke a print dialog with the user, and then to print the pages of the job.| Constructor | Description |
|---|---|
PrinterJob() |
A PrinterJob object should be created using the static getPrinterJob method. |
| Modifier and Type | Method | Description |
|---|---|---|
abstract void |
cancel() |
Cancels a print job that is in progress. |
PageFormat |
defaultPage() |
Creates a new PageFormat instance and sets it to a default size and orientation. |
abstract PageFormat |
defaultPage |
Clones the PageFormat argument and alters the clone to describe a default page size and orientation. |
abstract int |
getCopies() |
Gets the number of copies to be printed. |
abstract String |
getJobName() |
Gets the name of the document to be printed. |
PageFormat |
getPageFormat |
Calculates a PageFormat with values consistent with those supported by the current PrintService for this job (ie the value returned by getPrintService()) and media, printable area and orientation contained in attributes. |
static PrinterJob |
getPrinterJob() |
Creates and returns a PrinterJob which is initially associated with the default printer. |
PrintService |
getPrintService() |
Returns the service (printer) for this printer job. |
abstract String |
getUserName() |
Gets the name of the printing user. |
abstract boolean |
isCancelled() |
Returns true if a print job is in progress, but is going to be cancelled at the next opportunity; otherwise returns false. |
static PrintService[] |
lookupPrintServices() |
A convenience method which looks up 2D print services. |
static StreamPrintServiceFactory[] |
lookupStreamPrintServices |
A convenience method which locates factories for stream print services which can image 2D graphics. |
abstract PageFormat |
pageDialog |
Displays a dialog that allows modification of a PageFormat instance. |
PageFormat |
pageDialog |
A convenience method which displays a cross-platform page setup dialog. |
abstract void |
print() |
Prints a set of pages. |
void |
print |
Prints a set of pages using the settings in the attribute set. |
abstract boolean |
printDialog() |
Presents a dialog to the user for changing the properties of the print job. |
boolean |
printDialog |
A convenience method which displays a cross-platform print dialog for all services which are capable of printing 2D graphics using the Pageable interface. |
abstract void |
setCopies |
Sets the number of copies to be printed. |
abstract void |
setJobName |
Sets the name of the document to be printed. |
abstract void |
setPageable |
Queries document for the number of pages and the PageFormat and Printable for each page held in the Pageable instance, document. |
abstract void |
setPrintable |
Calls painter to render the pages. |
abstract void |
setPrintable |
Calls painter to render the pages in the specified format. |
void |
setPrintService |
Associate this PrinterJob with a new PrintService. |
abstract PageFormat |
validatePage |
Returns the clone of page with its settings adjusted to be compatible with the current printer of this PrinterJob. |
public PrinterJob()
PrinterJob object should be created using the static getPrinterJob method.public static PrinterJob getPrinterJob()
PrinterJob which is initially associated with the default printer. If no printers are available on the system, a PrinterJob will still be returned from this method, but getPrintService() will return null, and calling print with this PrinterJob might generate an exception. Applications that need to determine if there are suitable printers before creating a PrinterJob should ensure that the array returned from lookupPrintServices is not empty.PrinterJob.SecurityException - if a security manager exists and its SecurityManager.checkPrintJobAccess() method disallows this thread from creating a print job requestpublic static PrintService[] lookupPrintServices()
PrinterJobs which support print services. Calling this method is equivalent to calling PrintServiceLookup.lookupPrintServices() and specifying a Pageable DocFlavor.public static StreamPrintServiceFactory[] lookupStreamPrintServices(String mimeType)
FileOutputStream outstream;
StreamPrintService psPrinter;
String psMimeType = "application/postscript";
PrinterJob pj = PrinterJob.getPrinterJob();
StreamPrintServiceFactory[] factories =
PrinterJob.lookupStreamPrintServices(psMimeType);
if (factories.length > 0) {
try {
outstream = new File("out.ps");
psPrinter = factories[0].getPrintService(outstream);
// psPrinter can now be set as the service on a PrinterJob
pj.setPrintService(psPrinter)
} catch (Exception e) {
e.printStackTrace();
}
}
PrinterJob instances which support print services. Calling this method is equivalent to calling StreamPrintServiceFactory.lookupStreamPrintServiceFactories()
and specifying a Pageable DocFlavor.mimeType - the required output format, or null to mean any format.public PrintService getPrintService()
public void setPrintService(PrintService service) throws PrinterException
PrinterException if the specified service cannot support the Pageable and Printable interfaces necessary to support 2D printing.service - a print service that supports 2D printingPrinterException - if the specified service does not support 2D printing, or this PrinterJob class does not support setting a 2D print service, or the specified service is otherwise not a valid print service.public abstract void setPrintable(Printable painter)
painter to render the pages. The pages in the document to be printed by this PrinterJob are rendered by the Printable object, painter. The PageFormat for each page is the default page format.painter - the Printable that renders each page of the document.public abstract void setPrintable(Printable painter, PageFormat format)
painter to render the pages in the specified format. The pages in the document to be printed by this PrinterJob are rendered by the Printable object, painter. The PageFormat of each page is format.painter - the Printable called to render each page of the documentformat - the size and orientation of each page to be printedpublic abstract void setPageable(Pageable document) throws NullPointerException
document for the number of pages and the PageFormat and Printable for each page held in the Pageable instance, document.document - the pages to be printed. It can not be null.NullPointerException - the Pageable passed in was null.public abstract boolean printDialog() throws HeadlessException
printDialog(PrintRequestAttributeSet). PrinterJob implementations which can use PrintService's will update the PrintService for this PrinterJob to reflect the new service selected by the user.
true if the user does not cancel the dialog; false otherwise.HeadlessException - if GraphicsEnvironment.isHeadless() returns true.public boolean printDialog(PrintRequestAttributeSet attributes) throws HeadlessException
Pageable interface. The selected printer when the dialog is initially displayed will reflect the print service currently attached to this print job. If the user changes the print service, the PrinterJob will be updated to reflect this, unless the user cancels the dialog. As well as allowing the user to select the destination printer, the user can also select values of various print request attributes. The attributes parameter on input will reflect the applications required initial selections in the user dialog. Attributes not specified display using the default for the service. On return it will reflect the user's choices. Selections may be updated by the implementation to be consistent with the supported values for the currently selected print service.
As the user scrolls to a new print service selection, the values copied are based on the settings for the previous service, together with any user changes. The values are not based on the original settings supplied by the client.
With the exception of selected printer, the PrinterJob state is not updated to reflect the user's changes. For the selections to affect a printer job, the attributes must be specified in the call to the print(PrintRequestAttributeSet) method. If using the Pageable interface, clients which intend to use media selected by the user must create a PageFormat derived from the user's selections. If the user cancels the dialog, the attributes will not reflect any changes made by the user.
attributes - on input is application supplied attributes, on output the contents are updated to reflect user choices. This parameter may not be null.true if the user does not cancel the dialog; false otherwise.HeadlessException - if GraphicsEnvironment.isHeadless() returns true.NullPointerException - if attributes parameter is null.public abstract PageFormat pageDialog(PageFormat page) throws HeadlessException
PageFormat instance. The page argument is used to initialize controls in the page setup dialog. If the user cancels the dialog then this method returns the original page object unmodified. If the user okays the dialog then this method returns a new PageFormat object with the indicated changes. In either case, the original page object is not modified.page - the default PageFormat presented to the user for modificationpage object if the dialog is cancelled; a new PageFormat object containing the format indicated by the user if the dialog is acknowledged.HeadlessException - if GraphicsEnvironment.isHeadless() returns true.public PageFormat pageDialog(PrintRequestAttributeSet attributes) throws HeadlessException
The attributes parameter on input will reflect the client's required initial selections in the user dialog. Attributes which are not specified display using the default for the service. On return it will reflect the user's choices. Selections may be updated by the implementation to be consistent with the supported values for the currently selected print service.
The return value will be a PageFormat equivalent to the selections in the PrintRequestAttributeSet. If the user cancels the dialog, the attributes will not reflect any changes made by the user, and the return value will be null.
attributes - on input is application supplied attributes, on output the contents are updated to reflect user choices. This parameter may not be null.null otherwise.HeadlessException - if GraphicsEnvironment.isHeadless() returns true.NullPointerException - if attributes parameter is null.public abstract PageFormat defaultPage(PageFormat page)
PageFormat argument and alters the clone to describe a default page size and orientation.page - the PageFormat to be cloned and alteredpage, altered to describe a default PageFormat.public PageFormat defaultPage()
PageFormat instance and sets it to a default size and orientation.PageFormat set to a default size and orientation.public PageFormat getPageFormat(PrintRequestAttributeSet attributes)
PageFormat with values consistent with those supported by the current PrintService for this job (ie the value returned by getPrintService()) and media, printable area and orientation contained in attributes. Calling this method does not update the job. It is useful for clients that have a set of attributes obtained from printDialog(PrintRequestAttributeSet attributes) and need a PageFormat to print a Pageable object.
attributes - a set of printing attributes, for example obtained from calling printDialog. If attributes is null a default PageFormat is returned.PageFormat whose settings conform with those of the current service and the specified attributes.public abstract PageFormat validatePage(PageFormat page)
page with its settings adjusted to be compatible with the current printer of this PrinterJob. For example, the returned PageFormat could have its imageable area adjusted to fit within the physical area of the paper that is used by the current printer.page - the PageFormat that is cloned and whose settings are changed to be compatible with the current printerPageFormat that is cloned from page and whose settings are changed to conform with this PrinterJob.public abstract void print() throws PrinterException
PrinterException - an error in the print system caused the job to be aborted.public void print(PrintRequestAttributeSet attributes) throws PrinterException
Note that some attributes may be set directly on the PrinterJob by equivalent method calls, (for example), copies: setCopies(int), job name: setJobName(String) and specifying media size and orientation though the PageFormat object.
If a supported attribute-value is specified in this attribute set, it will take precedence over the API settings for this print() operation only. The following behaviour is specified for PageFormat: If a client uses the Printable interface, then the attributes parameter to this method is examined for attributes which specify media (by size), orientation, and imageable area, and those are used to construct a new PageFormat which is passed to the Printable object's print() method. See Printable for an explanation of the required behaviour of a Printable to ensure optimal printing via PrinterJob. For clients of the Pageable interface, the PageFormat will always be as supplied by that interface, on a per page basis.
These behaviours allow an application to directly pass the user settings returned from printDialog(PrintRequestAttributeSet attributes to this print() method.
attributes - a set of attributes for the jobPrinterException - an error in the print system caused the job to be aborted.public abstract void setCopies(int copies)
copies - the number of copies to be printedpublic abstract int getCopies()
public abstract String getUserName()
SecurityException - if a security manager exists and PropertyPermission - user.name is not given in the policy filepublic abstract void setJobName(String jobName)
null.jobName - the name of the document to be printedpublic abstract String getJobName()
public abstract void cancel()
print has been called but has not returned then this method signals that the job should be cancelled at the next chance. If there is no print job in progress then this call does nothing.public abstract boolean isCancelled()
true if a print job is in progress, but is going to be cancelled at the next opportunity; otherwise returns false.true if the job in progress is going to be cancelled; false otherwise.
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