Need help for printer application status

Question

Hi,
I am using jdeveloper11.1.1.2.0.Actually standalone java application,I want to know status of the printer,If there is no paper inside printer then message should be display no paper in the printer,
if i did printout but after 2 second i want to cancel the print then message should be also display ...
my code is below..
public void invokePrintJob(ActionEvent actionEvent) {
// Add event code here...
PrintService[] printers = PrintServiceLookup.lookupPrintServices(null, null);
Boolean printerFound = false;
for (int i = 0; i < printers.length && !printerFound; i++) {
if (printers.getName().equalsIgnoreCase(getSelectedPrinter())) {
printerFound = true;
PrintService printer = printers[i];
UploadedFile file = getTheFile();
String fileName = getTheFile().getFilename();
// String file = getTheFile();
//PrintJobAdapter pr = new PrintJobAdapter();
InputStream input;
try {
input = new BufferedInputStream((file.getInputStream()));
Doc doc = new SimpleDoc(input, DocFlavor.INPUT_STREAM.PNG, null);
PrintRequestAttributeSet attrs = new HashPrintRequestAttributeSet();
attrs.add(new Copies(2));
attrs.add(OrientationRequested.LANDSCAPE);
JobName name = new JobName(fileName ,null);
attrs.add(name);
DocPrintJob job = printer.createPrintJob();
PrintJobWatcher pjDone = new PrintJobWatcher(job);
job.print(doc, attrs);
pjDone.waitForDone();
System.out.println("--------jobRunning-end----------");
input.close();
} catch (PrintException e) {
System.out.println(e.getMessage());
addFacesErrorMessage(e.getMessage());
} catch (FileNotFoundException e) {
System.out.println(e.getMessage());
addFacesErrorMessage(e.getMessage());
}catch (IOException ioe) {
// TODO: Add catch code
ioe.printStackTrace();
public static class PrintJobWatcher {
// true iff it is safe to close the print job's input stream
boolean done = false;
PrintJobWatcher(DocPrintJob job) {
// Add a listener to the print job
job.addPrintJobListener(new PrintJobAdapter() {
public void printJobCanceled(PrintJobEvent pje) {
System.out.println("-------printJobCanceled--------");
allDone();
public void printJobCompleted(PrintJobEvent pje) {
System.out.println("------printJobCompleted---------");
allDone();
public void printJobFailed(PrintJobEvent pje) {
System.out.println("----------printJobFailed-------");
allDone();
public void printJobNoMoreEvents(PrintJobEvent pje) {
System.out.println("--------printJobNoMoreEvents---------");
allDone();
@Override
public void printJobRequiresAttention(PrintJobEvent pje) {
System.out.println("-----------printJobRequiresAttention----------");
allDone();
@Override
public void printDataTransferCompleted(PrintJobEvent pje) {
System.out.println("-------printDataTransferCompleted---------");
allDone();
void allDone() {
// System.out.println("---------------");
synchronized (PrintJobWatcher.this) {
done = true;
PrintJobWatcher.this.notify();
public synchronized void waitForDone() {
try {
while (!done) {
wait(1000);
} catch (InterruptedException e) {
e.printStackTrace();
Please help me..

Answer 1

Help with what? What's the actual problem?
As far the code looks horrible. This kind of logic belongs in a fitler rather than a backing bean. You use empty strings instead of nulls. You stores passwords plain and unhashed in DB. You compares the password in Java instead of in DB. You stores password in a cookie. Your query is unsafe for SQL injections. You're reloading the driver class everytime when you acquire the connection. You're leaking DB connections. The application will crash sooner or later when the DB run out of connections.
Is that all what you need to know?