PageDlgApp.java 文件源码

public static void main(String[] args) throws Exception {

        String[] instructions =
         {
             "Visual inspection of the dialog is needed. ",
             "It should be a Printer Job Setup Dialog",
             "Do nothing except Cancel",
             "You must NOT press OK",
         };
        SwingUtilities.invokeAndWait(() -> {
            JOptionPane.showMessageDialog(
                    (Component) null,
                    instructions,
                    "information", JOptionPane.INFORMATION_MESSAGE);
        });
        PrinterJob pj = PrinterJob.getPrinterJob();
        PrintRequestAttributeSet pSet = new HashPrintRequestAttributeSet();
        pSet.add(DialogTypeSelection.NATIVE);
        if ((pj.pageDialog(pSet)) != null) {
            throw
            new RuntimeException("PrinterJob.pageDialog(PrintRequestAttributeSet)"
                        + " does not return null when dialog is cancelled");
        }
    }