I had successfully compile my java code in Eclipse with name FaceDetection.java... I am getting an Exception in thread "main" java.lang.NoSuchMethodError: main.... Please help me to remove this Exception.. Here is the code

import java.awt.; import java.awt.event.; import java.awt.image.MemoryImageSource; import hypermedia.video.OpenCV;

@SuppressWarnings("serial") public class FaceDetection extends Frame implements Runnable {

/**
 * Main method.
 * @param String[]  a list of user's arguments passed from the console to this program
 */
public static void main( String[] args ) 
{
    System.out.println( "\nOpenCV face detection sample\n" );
    new FaceDetection();
} 

// program execution frame rate (millisecond)
final int FRAME_RATE  = 1000/30;


OpenCV cv = null;   // OpenCV Object
Thread t  = null;   // the sample thread



// the input video stream image
Image frame = null;
// list of all face detected area
Rectangle[] squares = new Rectangle[0];



/**
 * Setup Frame and Object(s).
 */
FaceDetection() {

    super( "Face Detection Sample" );


    // OpenCV setup
    cv = new OpenCV();
    cv.capture( 320, 240 );
    cv.cascade( OpenCV.CASCADE_FRONTALFACE_ALT );


    // frame setup
    this.setBounds( 100, 100, cv.width, cv.height );
    this.setBackground( Color.BLACK );
    this.setVisible( true );
    this.addKeyListener(
        new KeyAdapter() {
            public void keyReleased( KeyEvent e ) { 
                if ( e.getKeyCode()==KeyEvent.VK_ESCAPE ) { // ESC : release OpenCV resources 
                    cv.dispose();
                    System.exit(0);
                }
            }
        }
    );


    // start running program
    t = new Thread( this );
    t.start();
}


/**
 * Draw video frame and each detected faces area.
 */
public void paint( Graphics g ) {

    // draw image
    g.drawImage( frame, 0, 0, null );

    // draw squares
    g.setColor( Color.RED );
    for( Rectangle rect : squares )
        g.drawRect( rect.x, rect.y, rect.width, rect.height );
}




/**
 * Execute this sample.
 */
@SuppressWarnings("static-access")
public void run() {
    while( t!=null && cv!=null ) {
        try {

            t.sleep( FRAME_RATE );

            // grab image from video stream
            cv.read();

            // create a new image from cv pixels data
            MemoryImageSource mis = new MemoryImageSource( cv.width, cv.height, cv.pixels(), 0, cv.width );
            frame = createImage( mis );

            // detect faces
            squares = cv.detect( 1.2f, 2, OpenCV.HAAR_DO_CANNY_PRUNING, 20, 20 );

            // of course, repaint
            repaint();
        }
        catch( InterruptedException e ) {;}
    }
}

}