getState() returning null

[atorisemofe]

I am using cups 0.7.8 jar, and want to check the printer status by using the following method of the cups API

public PrinterStateEnum getState()

The code is as follows:

String cupsHost = rb.getString("cups.server.hostname");

String cupsPort = rb.getString("cups.server.port");
CupsClient client = new CupsClient(cupsHost, new Integer(cupsPort));

List printers = client.getPrinters();
logger.info("Found printers: " + printers.toString());

for (CupsPrinter printer : printers) {
logger.info("printer available: " + printer.getName());
PrinterStateEnum printerState = printer.getState();
}

However the getState() method is returning null

I checked the cups server end and it is possible to access the printer status over the browser. This is what is seen:

I wanted to know if this API [ public PrinterStateEnum getState() ] is fully functional and tested for the cups jar version 0.7.8, and if so, why it may be returning null in the code, even though other API methods like CupsPrinter::getName() and CupsPrinter::getURL() are working fine