Needed help with updating java code

Question

Hello all,
Let me begin by let you know I am not a programmer and I have tried to solve this by reading on the net. I am a network admin so I tech knowledge but no programming.
I have a webcam sending a Jpg to an FTP site and there I have used an applet called view.class to refresh once a second.
site:http://70.154.170.253/webcamold.html
My problems is now that it refreshes the same image over and over. It refreshes the cached image not the new image.
From reading I suspect that it has to do with the newer version of java (it used to work fine).
I have tried using JavaCam but same issue it just refreshes cached image. Also image flickers, the applet I am trying to fix was really smooth.
I have also tried to compile code that I found on this forum but I got error dealing with deprecated code.
Any help would be greatly appreciated!!!
Code:
import java.applet.Applet;
import java.awt.*;
import java.io.PrintStream;
public class View extends Applet
implements Runnable
public void init()
setBackground(Color.white);
String s = getParameter("refresh");
if(s == null)
update = 30;
else
try
update = Integer.parseInt(s);
catch(Exception _ex)
update = 30;
filename = getParameter("picture");
if(filename == null)
System.out.println("No filename given as parameter.");
md = new MediaTracker(this);
off = createImage(size().width, size().height);
refreshImage();
public void paint(Graphics g)
g.drawImage(off, 0, 0, this);
public void update(Graphics g)
paint(g);
public void refreshImage()
img = getImage(getDocumentBase(), filename);
md.addImage(img, 0);
try
md.waitForID(0);
catch(Exception exception)
exception.printStackTrace();
Graphics g = off.getGraphics();
g.drawImage(img, 0, 0, this);
img.flush();
public void run()
while(th != null)
try
refreshImage();
repaint();
Thread.sleep(update * 1000);
catch(Exception exception)
System.out.println("Error when thread was supposed to sleep: " + exception.getMessage());
public void start()
if(th == null)
th = new Thread(this);
try
th.start();
return;
catch(Exception exception)
System.out.println("Couldn't start thread: " + exception.getMessage());
return;
} else
return;
public void stop()
if(th != null)
th.stop();
th = null;
public void destroy()
stop();
public View()
update = 30;
Thread th;
String filename;
int update;
Image img;
Image off;
MediaTracker md;

Answer 1

This is compile error free code and regarding your issues i don't think am good at this stuff
import java.applet.Applet;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.MediaTracker;
public class View extends Applet implements Runnable {
     Thread th;
     String filename;
     int update;
     Image img;
     Image off;
     MediaTracker md;
     public void init() {
          setBackground(Color.white);
          String s = getParameter("refresh");
          if (s == null) {
               update = 30;
          } else {
               try {
                    update = Integer.parseInt(s);
               } catch (Exception _ex) {
                    update = 30;
          filename = getParameter("picture");
          if (filename == null) {
               System.out.println("No filename given as parameter.");
          md = new MediaTracker(this);
          off = createImage(size().width, size().height);
          refreshImage();
     public void paint(Graphics g) {
          g.drawImage(off, 0, 0, this);
     public void update(Graphics g) {
          paint(g);
     public void refreshImage() {
          img = getImage(getDocumentBase(), filename);
          md.addImage(img, 0);
          try {
               md.waitForID(0);
          } catch (Exception exception) {
               exception.printStackTrace();
          Graphics g = off.getGraphics();
          g.drawImage(img, 0, 0, this);
          img.flush();
     public void run() {
          while (th != null) {
               try {
                    refreshImage();
                    repaint();
                    Thread.sleep(update * 1000);
               } catch (Exception exception) {
                    System.out.println("Error when thread was supposed to sleep: "
                              + exception.getMessage());
     public void start() {
          if (th == null) {
               th = new Thread(this);
               try {
                    th.start();
                    return;
               } catch (Exception exception) {
                    System.out.println("Couldn't start thread: "
                              + exception.getMessage());
               return;
          } else {
               return;
     public void stop() {
          if (th != null) {
               th.stop();
               th = null;
     public void destroy() {
          stop();
     public View() {
          update = 30;
}