Not able to detect a TV tuner in Java

Question

I'm a beginner in Java and I'm trying to get the display of one laptop into a Java application, and for that I'm using an Enter E-260U TV Tuner card, but this device is not being detected using the following: Vector info = CaptureDeviceManager.getDeviceList(null);.

This is my code:

Vector info = CaptureDeviceManager.getDeviceList(null);
if (info == null)
  System.out.println("No Capture devices known to JMF");
else {
  System.out.println("The following " + info.size()
      + " capture devices are known to the JMF");
  for (int i = 0; i < info.size(); i++)
    System.out
        .println("\t" + (CaptureDeviceInfo) info.elementAt(i));

Thank you in advance!