Thread: Y is this showing a error???

Y DOES THIS CODE SHOW ERROR ?????????

import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.awt.image.ImageObserver;
import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

import javax.swing.JFrame;


public class Axis implements Runnable {
private static final long serialVersionUID = 1L;
public boolean useMJPGStream = true;
public String jpgURL = "http://ip here/video.cgi/jpg/image.cgi?resolution=640×480";
public String mjpgURL = "http://ip here /video.cgi/mjpg/video.cgi?resolution=640×480";
DataInputStream dis;
private BufferedImage image = null;
public Dimension imageSize = null;
public boolean connected = false;
private boolean initCompleted = false;
HttpURLConnection huc = null;
Component parent;

/** Creates a new instance of AxisCamera */
public Axis(Component parent_) {
parent = parent_;
}

public void connect() {
try {
URL u = new URL(useMJPGStream ? mjpgURL : jpgURL);
huc = (HttpURLConnection) u.openConnection();

// System.out.println(huc.getContentType());
InputStream is = huc.getInputStream();

connected = true;
BufferedInputStream bis = new BufferedInputStream(is);
dis = new DataInputStream(bis);
if (!initCompleted)
initDisplay();
} catch (IOException e) { // incase no connection exists wait and try
// again, instead of printing the error
try {
huc.disconnect();
Thread.sleep(60);
} catch (InterruptedException ie) {
huc.disconnect();
connect();
}
connect();
} catch (Exception e)
{
;
}
}

public void initDisplay() { // setup the display
if (useMJPGStream)
readMJPGStream();
else {
readJPG();
disconnect();
}
imageSize = new Dimension(image.getWidth(), image.getHeight());
parent.setPreferredSize(imageSize);
parent.setSize(imageSize);
parent.validate();
initCompleted = true;
}

public void disconnect() {
try {
if (connected) {
dis.close();
connected = false;
}
} catch (Exception e) {
;
}
}

public void paint(Graphics g) { // used to set the image on the panel
if (image != null)
g.drawImage(image, 0, 0, (ImageObserver) this);
}

public void readStream() { // the basic method to continuously read the
// stream
try {
if (useMJPGStream) {
while (true) {

readMJPGStream();
parent.repaint();
}
} else {
while (true) {
connect();
readJPG();
parent.repaint();
disconnect();

}
}

} catch (Exception e) {
;
}
}

public void readMJPGStream() { // preprocess the mjpg stream to remove the
// mjpg encapsulation
readLine(3, dis); // discard the first 3 lines
readJPG();
readLine(2, dis); // discard the last two lines
}

public void readJPG() { // read the embedded jpeg image
try {


// JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(dis);
//image = decoder.decodeAsBufferedImage();

} catch (Exception e) {
e.printStackTrace();
disconnect();
}

}

public void readLine(int n, DataInputStream dis) { // used to strip out the
// header lines
for (int i = 0; i < n; i++) {
readLine(dis);
}
}

public void readLine(DataInputStream dis) {
try {
boolean end = false;
String lineEnd = "\n"; // assumes that the end of the line is marked
// with this
byte[] lineEndBytes = lineEnd.getBytes();
byte[] byteBuf = new byte[lineEndBytes.length];

while (!end) {
dis.read(byteBuf, 0, lineEndBytes.length);
String t = new String(byteBuf);
System.out.print(t); // uncomment if you want to see what the
// lines actually look like
if (t.equals(lineEnd))
end = true;
}
} catch (Exception e) {
e.printStackTrace();
}

}

public void run() {
System.out.println("in Run...................");
connect();
readStream();
}

@SuppressWarnings("deprecation")
public static void main(String[] args) {


JFrame jframe = new JFrame();
jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLO SE);
Axis axPanel = new Axis(jframe);

new Thread(axPanel).start();
jframe.add(axPanel); //code shows error here
jframe.pack();
jframe.show();
}
}

I don't see an error! Post the exact stack trace and use code tags.

1.jpg

hers the snapshot with error

maybe the method doesnt have a parameter.