Elegir una impresora programáticamente en Jasper Reports

public class JasperReportsPrinter {
  public void printReport() {
    // Fill the JasperPrint object with data
    JasperPrint print = JasperFillManager.fillReport(
        JasperReportsPrinter.class.getResource("/classpath/yourReport.jasper").getPath(),
        new HashMap(), new YourReportDataSource());
    PrinterJob job = PrinterJob.getPrinterJob();
    // Retrieve available print services
    PrintService[] services = PrintServiceLookup.lookupPrintServices(null, null);
    int selectedService = 0;

    // Find a print service by name that matches our criteria
    for (int i = 0; i < services.length;i++) {
      if (services[i].getName().toUpperCase().contains("Your printer's name")) {
        // Select the first service that matches our criteria
        selectedService = i;
        break;
      }
    }
    job.setPrintService(services[selectedService]);

    // Set up print attributes
    PrintRequestAttributeSet printRequestAttributeSet = new HashPrintRequestAttributeSet();
    printRequestAttributeSet.add(MediaSize.findMedia(4, 4, MediaPrintableArea.INCH));
    printRequestAttributeSet.add(new Copies(1));

    // Configure the JRPrintServiceExporter
    JRPrintServiceExporter exporter = new JRPrintServiceExporter();
    exporter.setParameter(JRExporterParameter.JASPER_PRINT, print);
    /* We set the selected service and pass it as a parameter */
    exporter.setParameter(JRPrintServiceExporterParameter.PRINT_SERVICE,
        services[selectedService]);
    exporter.setParameter(JRPrintServiceExporterParameter.PRINT_SERVICE_ATTRIBUTE_SET,
        services[selectedService].getAttributes());
    exporter.setParameter(JRPrintServiceExporterParameter.PRINT_REQUEST_ATTRIBUTE_SET,
        printRequestAttributeSet);
    exporter.setParameter(JRPrintServiceExporterParameter.DISPLAY_PAGE_DIALOG,
        Boolean.FALSE);
    exporter.setParameter(JRPrintServiceExporterParameter.DISPLAY_PRINT_DIALOG,
        Boolean.TRUE);

    // Export the report to the printer
    exporter.exportReport();
  }
}