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pepelara · Joined: 29 Nov 2008 Posts: 115

Hi I have been studying the NB tutorial about Applets at,
http://netbeans.org/kb/docs/web/applets.html#embed

But this is not my case. What I have is a package chat with the Japplet Chat.java.
I call the JApplet to be displayed in a JSP file chatTR.jsp as follows,

<%@page ([email]%@page[/email]) contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<%
String path = request.getContextPath();
%>
<applet code="chat.Chat"
codebase="<%= path %>"
height="400" width="300">
<param name="user" value="TR">
</applet>
</body>
</html>

The JApplet Chat.java is as follows,

package chat;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class Chat extends JApplet {

JTextArea jTA;
JTextField jTF;
JButton jB;
JCheckBox jcbTR;
JCheckBox jcbET;
JCheckBox jcbPP;
/**
* Initialization method that will be called after the applet is loaded
* into the browser.
*/
public void init() {
// TODO start asynchronous download of heavy resources
String user = getParameter("user");

Container contentPane = getContentPane();
BorderLayout blMain = new BorderLayout();

JPanel jpMain = new JPanel();
jpMain.setLayout(new FlowLayout());
jTA = new JTextArea(10, 5);
jpMain.add(jTA);
blMain.addLayoutComponent(jpMain, BorderLayout.CENTER);

JPanel jpControls = new JPanel();
BorderLayout blControls = new BorderLayout();

JPanel jpTextField = new JPanel();
jpTextField.setLayout(new FlowLayout());
jTF = new JTextField(5);
jpTextField.add(jTF);
jB = new JButton("Send");
jpTextField.add(jB);
blControls.addLayoutComponent(jpTextField, BorderLayout.CENTER);

JPanel jpCheckBox = new JPanel();
jpCheckBox.setLayout(new FlowLayout());
jcbTR = new JCheckBox();
jcbTR.setText("TR");
jcbET = new JCheckBox();
jcbET.setText("ET");
jcbPP = new JCheckBox();
jcbPP.setText("PP");
jpCheckBox.add(jcbTR);
jpCheckBox.add(jcbET);
jpCheckBox.add(jcbPP);
if(user.equals("TR")){
jcbTR.setSelected(true);
jcbTR.setEnabled(false);
}
if(user.equals("ET")){
jcbET.setSelected(true);
jcbET.setEnabled(false);
}
if(user.equals("PP")){
jcbPP.setSelected(true);
jcbPP.setEnabled(false);
}
blControls.addLayoutComponent(jpCheckBox, BorderLayout.SOUTH);

blMain.addLayoutComponent(jpControls, BorderLayout.SOUTH);

contentPane.setLayout(blMain);
}

// TODO overwrite start(), stop() and destroy() methods

@Override
public void start() {
}

@Override
public void stop() {
}

@Override
public void destroy() {
}
}

But I get the following exception,

load: class chat.Chat not found.
java.lang.ClassNotFoundException: chat.Chat
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed:http://localhost:8081/Workflow/chat/Chat.class
at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
... 7 more
Excepci