Applet notinitited, please need urgent help

Hi all,

I face a porblem loading applets into html page. I have been working on this issue for 5 days now and couldn't figure out the solution. All the google links guide me to this amazing forum. However, I didn't solve the problem yet. I hope that I end up with this issue here.

When I load the applet in the browser with apache tomcat v5.5 running on local host, i get this error:

Java Plug-in 1.5.0_16
Using JRE version 1.5.0_16 Java HotSpot(TM) Client VM
User home directory = /home/mouza

----------------------------------------------------
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
p: reload proxy configuration
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------

load: class EchoApplet.class not found.
java.lang.ClassNotFoundException: EchoApplet.class
at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:179)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:119)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:613)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:723)
at sun.plugin.AppletViewer.createApplet(AppletViewer.java:1813)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:652)
at sun.applet.AppletPanel.run(AppletPanel.java:326)
at java.lang.Thread.run(Thread.java:595)

--------------------------------------------------------------

I'm using Eclipse and sun java version 6.

The index file is as follow:

The EchoApplet class is as follow:

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
 
import javax.swing.*;
//import javax.swing.JTextField;
 
import org.omg.CORBA.portable.InputStream;
import org.omg.CORBA.portable.OutputStream;
 
 
public class EchoApplet extends JApplet{
 
private TextField inputField = new TextField();
private TextField outputField = new TextField();
private TextArea exceptionArea = new TextArea();
 
/**
 * Setup the GUI.
 */
public void init() {
// set new layout
setLayout(new GridBagLayout());
 
// add title
Label title = new Label("Echo Applet", Label.CENTER);
title.setFont(new Font("SansSerif", Font.BOLD, 14));
GridBagConstraints c = new GridBagConstraints();
c.gridwidth = GridBagConstraints.REMAINDER;
c.weightx = 1.0;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = new Insets(5, 5, 5, 5);
add(title, c);
 
// add input label, field and send button
c = new GridBagConstraints();
c.anchor = GridBagConstraints.EAST;
add(new Label("Input:", Label.RIGHT), c);
c = new GridBagConstraints();
c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = 1.0;
add(inputField, c);
Button sendButton = new Button("Send");
c = new GridBagConstraints();
c.gridwidth = GridBagConstraints.REMAINDER;
add(sendButton, c);
sendButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
onSendData();
}

});
 
// add output label and non-editable field
c = new GridBagConstraints();
c.anchor = GridBagConstraints.EAST;
add(new Label("Output:", Label.RIGHT), c);
c = new GridBagConstraints();
c.gridwidth = GridBagConstraints.REMAINDER;
c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = 1.0;
add(outputField, c);
outputField.setEditable(false);
 
// add exception label and non-editable textarea
c = new GridBagConstraints();
c.anchor = GridBagConstraints.EAST;
add(new Label("Exception:", Label.RIGHT), c);
c = new GridBagConstraints();
c.gridwidth = GridBagConstraints.REMAINDER;
c.weighty = 1;
c.fill = GridBagConstraints.BOTH;
add(exceptionArea, c);
exceptionArea.setEditable(false);
}

private URLConnection getServletConnection()
throws MalformedURLException, IOException {

String url = "http://localhost:8080/";
// Connection zum Servlet �ffnen
URL urlServlet = new URL(url);
URLConnection con = urlServlet.openConnection();
 
// konfigurieren
con.setDoInput(true);
con.setDoOutput(true);
con.setUseCaches(false);
con.setRequestProperty(
"Content-Type",
"application/x-java-serialized-object");

// und zur�ckliefern
return con;
}

private void onSendData() {
try {
// get input data for sending
String input = inputField.getText();
 
// send data to the servlet
URLConnection con = getServletConnection();
OutputStream outstream = (OutputStream) con.getOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(outstream);
oos.writeObject(input);
oos.flush();
oos.close();
 
// receive result from servlet
InputStream instr = (InputStream) con.getInputStream();
ObjectInputStream inputFromServlet = new ObjectInputStream(instr);
String result = (String) inputFromServlet.readObject();
inputFromServlet.close();
instr.close();
 
// show result
outputField.setText(result);
 
} catch (Exception ex) {
ex.printStackTrace();
exceptionArea.setText(ex.toString());
}
}
 
 
}

Please, can anyone help me solving this problem asap?
[ October 29, 2008: Message edited by: Mouza Ali ]

Using an absolute path for "codebase" doesn't work; it needs to be relative. The easiest would be to put the class files into the same directory as the HTML file. Then you don't need the codebase attribute at all.