Web-cam is not detected yet installed

Question

Hi!
I m doing a program tat can capture movie from available video capturing devices, i hav installed web-cam, but while searching for the devices available(Detecting the device) , it is not identifing the device. And still if i m giving direct the device info to the program("vfj//0")then movie is captured from web-cam.
Program is listed below which is not detecting the web-cam:
public void setMainSource(){
setProcessing(false);
VideoFormat vidformat = new VideoFormat(VideoFormat.YUV);
Vector devices = CaptureDeviceManager.getDeviceList(vidformat);
CaptureDeviceInfo di = null;
if (devices.size() > 0) di = (CaptureDeviceInfo) devices.elementAt(0);
else {
/* I got exception here */
JOptionPane.showMessageDialog(parent,
"Your camera is not connected", "No webcam found", JOptionPane.WARNING_MESSAGE);
return;
try {
ml = di.getLocator();
setMainCamSource(Manager.createDataSource(ml));
} catch (Exception e) {
JOptionPane.showMessageDialog(parent,
"Exception locating media: " + e.getMessage(), "Error", JOptionPane.WARNING_MESSAGE);
return;
Output:
Web cam not found....
So wht shd be the problem , nyone please explain the problem how to overcome from it.
Thank you

Answer 1

First of all sorry for spelling mistake i write ("vfj//0") rather then "vfw://0"
Yeh! i read your code n your code is also giving the same error
like
Web cam not detected/installed(like something this).
But still i hav attached cam n capturing movie from the code shown below:
//This will not detect the webcam n directly captures the movie, try it out so now wht to do so tat will detect the webcam properly....
CODE:
import javax.media.*;
import javax.media.util.*;
import javax.media.format.*;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import javax.media.control.*;
class testing extends JFrame implements ControllerListener,ActionListener
     //Variables for gui
     public JButton play=new JButton("Play");
     public JButton stop=new JButton("Stop");
     public JPanel p1=new JPanel();
     public JPanel p2=new JPanel();
     Container c;
     //Variables for videocapturing
     boolean stateTransitionOK = true;
     Object waitSync = new Object();
     Processor p;
     ///Variables required to store the movie
     DataSink sink;
     MediaLocator dest = new MediaLocator("save_video.wav");
     ///methods
     public testing()
          super("Video Capture Demo");
          setupvideocapture();
          setupgui();
     public void setupgui()
          c.add(play);
          c.add(stop);
          addWindowListener(new WindowHandler());
          stop.addActionListener(this);
          play.addActionListener(this);
          setSize(350,350);
          setVisible(true);
          show();
     public void actionPerformed(ActionEvent ae)
          String str;
          str=ae.getActionCommand();
          if(str=="Play")
               try
                    //Before starting capturing store the movie to the HDD
                    p.start();
                    sink = Manager.createDataSink(p.getDataOutput(), dest);
                    sink.open();
                    sink.start();
               catch(Exception e)
          else if(str=="Stop")
               try
               //     sink.stop();
                    p.stop();
               catch(Exception e)
     public void setupvideocapture()
          c=getContentPane();
          c.setLayout(new FlowLayout());
          try
               p = Manager.createProcessor(new MediaLocator("vfw://0"));
               p.addControllerListener(this);
               p.configure();
               waitForState(p.Configured);
               p.setContentDescriptor(null);
               p.prefetch();
               waitForState(p.Prefetched);
               c.add(p.getVisualComponent());
               ///Intializing the saving procedure
          catch(Exception e)
               System.out.println(e);
          public void controllerUpdate(ControllerEvent evt)
               if (evt instanceof ConfigureCompleteEvent || evt instanceof RealizeCompleteEvent || evt instanceof PrefetchCompleteEvent)
                    synchronized (waitSync)
                         stateTransitionOK = true;
                         waitSync.notifyAll();
               else if (evt instanceof ResourceUnavailableEvent)
                    synchronized (waitSync)
                    System.out.println("ResourceUnavailable");
                    stateTransitionOK = false;
                    waitSync.notifyAll();
               else if (evt instanceof EndOfMediaEvent)
                    p.close();
                    System.exit(0);
          boolean waitForState(int state)
               synchronized (waitSync)
                    try
                         while (p.getState() != state && stateTransitionOK)
                              waitSync.wait();
                    catch (Exception e) {}
               return stateTransitionOK;
     //Entry point
     public static void main(String args[])
          testing t=new testing();
class WindowHandler extends WindowAdapter
     public void windowClosing(WindowEvent e)
          System.exit(0);
This is working properly........ so plz if other option plz notify me.
Thank you for helping me.......