Applet(with images) running problem at Client

[Frodo Sharma]

Hello,

I have made an applet that displays an image(img1) over another one(img2). This works fine on the server system but at the client the first image(img1) is not shown, but second one is. Java Console is not showing any errors at the client end. I have already placed all the realted files for the applet in the jar file and have attached it to the html code. Also I have signed the jar file. When the applet is loaded then it asks for permission.

The code is as follows:
Html code

 
<applet code="Twoimage.class" width="1050" height="1050" codebase="http://192.168.100.1/Folder1" archive="locate.jar"> </applet>

Java code:

 
import java.awt.*;
import java.awt.event.*;
import java.awt.image.ImageObserver;
import java.awt.image.BufferedImage;
import javax.swing.*;
import java.net.URL;
import java.io.*;
import java.net.*;
import java.lang.*;
import java.lang.Number.*;
 
public class Twoimage extends JApplet implements ImageObserver {
 
    private static Image agif, clouds;
    private static int aw, ah, cw, destx, desty;
    private int x;
    private BufferedImage bimg;
    Socket client_sock = null;
    PrintWriter out = null;
    BufferedReader in = null;
 
    public void init() {
setBackground(Color.white);
        clouds = getDemoImage("img2.gif");
        agif = getDemoImage("img1.gif");
        aw = agif.getWidth(this) / 2;
        ah = agif.getHeight(this) / 2;
        cw = clouds.getWidth(this);
connect_Gis();
    }
 
    public Image getDemoImage(String name) {
        URL url = Twoimage.class.getResource(name);
        Image img = getToolkit().getImage(name);
        try {
            MediaTracker tracker = new MediaTracker(this);
            tracker.addImage(img, 0);
            tracker.waitForID(0);
        } catch (Exception e) {}
        return img;
    }
 
    public void drawDemo(Graphics2D g2) {
       g2.drawImage(clouds, 1, 1, this);
       g2.drawImage(agif, destx, desty, this);
    }
 
    public Graphics2D createGraphics2D(int w, int h) {
        Graphics2D g2 = null;
        if (bimg == null || bimg.getWidth() != w || bimg.getHeight() != h) {
            bimg = (BufferedImage) createImage(w, h);
        }
        g2 = bimg.createGraphics();
        g2.setBackground(getBackground());
 
     g2.setRenderingHint(RenderingHints.KEY_RENDERING,
                            RenderingHints.VALUE_RENDER_QUALITY);
        g2.clearRect(0, 0, w, h);
        return g2;
    }
 
    public void paint(Graphics g) {
Dimension d = getSize();
        Graphics2D g2 = createGraphics2D(d.width, d.height);
drawDemo(g2);
        g2.dispose();
        g.drawImage(bimg, 0, 0, this);
    }
 

    public boolean imageUpdate(Image img, int infoflags,
                int x, int y, int width, int height)
    {
        if (isShowing() && (infoflags & ALLBITS) != 0)
            repaint();
        if (isShowing() && (infoflags & FRAMEBITS) != 0)
            repaint();
        return isShowing();
    }
 
    //Connect to server and fetch the coordinates (x,y) place these values //in destx, desty
    public void connect_server() {
char buff[] = {'0','0','0','0','0','0','0','0'};
 
try {
client_sock = new Socket("192.168.100.9",9321);
out = new PrintWriter(client_sock.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(client_sock.getInputStream()));
 
}
catch (UnknownHostException e) {
System.err.println("Unable to connect to localhost");
System.exit(1);
} catch (IOException e) {
System.err.println("Connection error got I/O exception..." + e.getMessage());
System.exit(1);
}
 
try {
out.println("A");
 
System.out.println(" From Server");
 
for(int k=0;k<8;k++){
buff[k] = (char)in.read();
}
 
Stringstrxy = new String (buff);
destx = Integer.valueOf(strxy.substring(0,4)).intValue();
desty = Integer.valueOf(strxy.substring(4,8)).intValue();
System.out.println("\n X:  "+destx+"  Y:  "+desty);
   }
catch (IOException e) {
System.err.println("read/write error ...." + e.getMessage());
}
 
try {
out.close();
in.close();
client_sock.close();
} catch (IOException e) {
System.err.println("Couldnot close");
 }
 
   }
 

Any comments, why the image(img1)is not visible at the clients,
will be highly appreciated.

Thanks
Frodo.

[/CODE]

[akalanka de silva]

hey this is a big problem for applet.because applet have a security policy and when we want to connect remote machine applet must configure for that in security.ther has a class called it appletsecurity i dont know how to create it but thats a problem u didnt see the pic.if u configure that security pls mail me