How to run the samplecode JMF20_guide.pdf provide?

Question

The pdf document has a samplecode in page 100,but how to run the code?My code like this:
public static void main(String[] args)
CaptureAudio ca=new CaptureAudio();
ca.captureDevice();
//capture and play audio from a microphone
public void captureDevice()
Vector deviceList=CaptureDeviceManager.getDeviceList(new AudioFormat("linear",44100,16,2));
if(deviceList.size()>0)
di=(CaptureDeviceInfo)deviceList.firstElement();
else
System.exit(-1);
try
Player p=Manager.createPlayer(di.getLocator());
catch(IOException e)
catch(NoPlayerException e)
but sames not of my desired result,why?
I had a microphone on my computer,It sames the code could capture the device.
Another question,how could I capture the video device?
Vector deviceList=CaptureDeviceManager.getDeviceList(new VideoFormat("JPEG"));
Is this?

Answer 1

1. The code you showed here isn't the complete one so you can see the whole picture. This code can be used in audio transmission ( example code can be found in AVTransmit2.java in the JMF/Solutions). For your current piece of code, if you want to see if you already got the capture device ready, Simply print out the deviceList to console.
2. If it still does not work, open Java registry app, and click capture device tab, then click the button: "detect capture device", which goes through a search/registration process.
3. If you tried to got all Audio/Video capture devices, simply use
deviceList = CaptureDeviceManager.getDeviceList(null);