Swing Applet - doesnt work

Hi,
I'm trying to get a swing applet to work on windows 9x/2000 platform with Internet Explorer 5.
I need the applet to show some text boxes and buttons. all simple stuff.
I'm using j2sdk1.4.1 to compile the applet. And i've read on the net that i need java plugin 1.2 to run the swing applet.
The articles say to use this HTML code which is supposed to download the new plug-in if IE can't run it but it never does. any ideas?
<HTML>
<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
width="120" height="160" align="middle"
codebase="http://java.sun.com/products/plugin/1.2/
jinstall-12-win32.cab#Version=1,2,0,0">
<PARAM NAME="code" VALUE="AppletGreeting1.class">
</OBJECT>
<HTML>
I've also read that i can have swing.jar in my classes path and that will fix my problems but all i have is swingapplet.jar and that doesn't work. I've excluded the archive parameter from the object tags because i'm running the html file in the same folder.
Does anyone have any ideas please because this isn't as straight forward as i would have liked it to be.??
cheers

The plugin you are attempting to download from Sun ("http://java.sun.com/products/plugin/1.2/
jinstall-12-win32.cab#Version=1,2,0,0")
is an old version. I have had problems downloading this before, so I modified my html to serve the plugin from a local system. That may be your problem. If you have installed j2sdk1.4.1, I think you have the plugin. You may want to check. Verify plugin is enabled
On IE its under
Tools-Internet Options-Advanced (Use Java 2 v1.4....
On Netscape, plugins are listed under
Help-About Plugins
You can download the plugin directly from Sun @
http://java.sun.com/getjava
Pete

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My swing applets dont work in IE!!! Anyone can help?

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it sounds like you don't have the swing classes on the classpath - I don't really understand how this would happen (unless you have a pre-131 environment)
Try downloading the JRE again?

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In order to maximize compatibility with the Java virtual machines embedded in Microsoft Internet Explorer browsers, beginning with version 1.3.1_01a Java Plug-in uses separate class loaders for applets that differ in their codebase and/or the value of the ARCHIVE parameter in the APPLET tags that invoke the applets. Only if two or more applets share the same codebase and have the same value for their ARCHIVE parameter will the same class loader be used.
Applets that rely explicitly on the old Java Plug-in behavior with respect to class loaders may be incompatible with the new Java Plug-in. That is, applets that rely on the ability to share information afforded by a single class loader may fail to work properly if the new Java Plug-in uses separate class loaders for each applet. If this compatibility issue applies to your applets, you can force Java Plug-in to use a single class loader for multiple applets by simply ensuring that all applets have the same codebase and that the APPLET tags used to launch the applets each has the same value for the ARCHIVE parameter. "
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on Windows NT) to run swing applets. I've got
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i've also tried to do the same on my linux system
and had no success (although a different error)
how do i get swing applets to work?

It's frustrating...isn't it?
I ran into the same problem and found out that the demo on their site was out of date. After I downloaded the tutorial from Sun, everything worked out ok. Try the link below for a download:
http://java.sun.com/docs/books/tutorial/
V.V.

Oracle JDBC and Swing Applets

Hi
I'm trying yo connect to an oracle databse using the oracle thin driver
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Oracle/jdbc/driver/oracel/driver not found
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any ideas?
mail me at [email protected]
'**********************Heres the code************************
import java.sql.*;
import java.lang.*;
import java.awt.*;
import java.applet.Applet;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
<applet code =testdata.class width=300 height=300></applet>
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String t;
char n,m;
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Thanks

continued...
I re-read your problem , your problem is as same as me.
So, unzip classes12.zip oy folder /htdocs/ on your server
, when this file is unziped it will create the necessary
folders and files so your program will find the drivers
classes and I think your problem is solved.
Thanks Jamanir

Button doesnt work

Hi
Below is the coding that i have created i am trying to make the button play a sound when it is pressed. It worked for one button but when i put the second button it doesnt work, any help will be greatly appreciated. Thanks
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.io.*;
import java.text.*;
import java.util.*;
import java.io.PrintStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.applet.AudioClip;
import java.net.URL;
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//public MalformedURLException();
//private URL("C:/JBuilder3/myprojects/untitled1/)
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logout.addActionListener(this);
logout.setActionCommand("logout");
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controlPanel.add(logout);
controlPanel.add(open);
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java.applet.AudioClip clip =
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try
(open = open);
java.applet.AudioClip clip =
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clip.play();
catch (MalformedURLException pex)
public static void main(String s[]) {
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JFrame f = new JFrame("Panel");
f.addWindowListener(l);
f.getContentPane().add(new Panel1());
//f.setSize(new Dimension(400,100));
f.show();
}

Please use code tags, as described in formatting tips.
What does "does not work" mean? Throws an execption, nothing happens when you click the button, comple error?

Applet Not Working in Browser

I built a java applet that works fine in the applet viewer, but just appears as a gray screen in a web browser. In the status bar of the web browser, it says that the applet has been started. The only possible cause of this that I can think of is a failure to connect to the internet. The program should appear like that if it fails to connect to the internet when it first starts. If this is the problem, please see my other post about making that work.
http://forum.java.sun.com/thread.jsp?forum=31&thread=449444&tstart=0&trange=15

1) What Browser?
2) What is you code?
1) If it is Internet Explorer, the problem would be an outdated JVM. MS JVM only supports up to Java 1.1.8 so you would have to rework your Applet to fit with just those classes/methods present at that time (ie no Swing, and check the APIs to make sure that the since version isn't past 1.1.
If you are using other browsers, the old JVM may be a problem as well. It should be easy enough to install the latest one.
2) Start out with something simple, like a hello world. Get that to work, then worry about the more complicated stuff.

Unable to download images in a swing applet (1.3.1) behind proxy

Hi
One of my client have a proxy server and firewall and when they try to access my webserver
then all the AWT applet are downloaded and rendered on client properly. However, the swing applet written
using JDK 1.3.1 is downloaded and rendered but it doesn't display anything properly as images
are not down loaded. I have used media tracker to add images to it like oMediaTracker.addImage( oImage, index );
and then oMediaTracker.waitForAll();
Java console display at client looks as follows:
Java(TM) Plug-in: Version 1.3.1
Using JRE version 1.3.1 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\toy
Proxy Configuration: no proxy
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
q: hide console
s: dump system properties
t: dump thread list
x: clear classloader cache
0-5: set trace level to <n>
Applet Initialization start...
Applet Image Initialization start...
Trace level set to 5: basic, net, security, ext, liveconnect ... completed.
Opening      http:MyServer/24/x.gif
Connecting     http:MyServer/24/x.gif with no proxy
Connecting
http:MyServer/24/x.gif with cookie "ASPSESSIONIDGQGQQVWC=DLNBDAOABFANEPJFFIGOOIPG;
JSESSIONID=25Ais2tF1eBkevUhAa2akocfShzNdzyL7yC1I7UhJl7Z6BLZrnQK!
-1149265879"
Opening      http:MyServer/40/y.gif
Connecting      http:MyServer/40/y.gif with no proxy
Connecting      http:MyServer/40/y.gif with cookie "ASPSESSIONIDGQGQQVWC=DLNBDAOABFANEPJFFIGOOIPG;
JSESSIONID=25Ais2tF1eBkevUhAa2akocfShzNdzyL7yC1I7UhJl7Z6BLZrnQK!
-1149265879"
Opening     http://MyServer/sun/beans/infos/PanelBeanInfo.class
Connecting     http://MyServer/sun/beans/infos/PanelBeanInfo.class with no proxy
Connecting http://MyServer/sun/beans/infos/PanelBeanInfo.class with cookie "ASPSESSIONIDGQGQQVWC=DLNBDAOABFANEPJFFIGOOIPG;
JSESSIONID=25Ais2tF1eBkevUhAa2akocfShzNdzyL7yC1I7UhJl7Z6BLZrnQK!
-1149265879"
Opening http://MyServer/java/awt/ContainerBeanInfo.class
Connecting http://MyServer/java/awt/ContainerBeanInfo.class with no proxy
Connecting http://MyServer/java/awt/ContainerBeanInfo.class
Client machine tries to access these images but i never receive a call at web server end when i see
IIS log.
CLient environment:
-Windows 2000/XP/NT
-Internet explorer 6.0 SP1 or IE 5.5 SP2
with connection->LAN Setting->Use Automatic configuration script(only checked)
-Java Plugin configured like proxies->Use Browser Setting
-JDK 1.3.1 plug in at client(downloaded and Installed automatically on demand)
-Object tag used to download applet and plugin
-Firewall and proxy(i don't know about vendor)
My webserver environment
Windows 2000/iis 5.0 with anonymous authentication and
cache-control header set to no-store (so that proxy doesn't cache anything)
QUESTIONS:
~~~~~~~~~
Q.1. When i try from home network that has a proxy then everything works fine. At client site everything except
image download works fine. I mean jars are downloaded and i can see anything drawn using JAVA API.
When i try from home i see following java console trace
Java(TM) Plug-in: Version 1.3.1
Using JRE version 1.3.1 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\wuko
Proxy Configuration: Automatic Proxy Configuration
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
q: hide console
s: dump system properties
t: dump thread list
x: clear classloader cache
0-5: set trace level to <n>
Trace level set to 5: basic, net, security, ext, liveconnect ... completed.
Applet Initialization start...
Applet Image Initialization start...
Opening http://MyServer/24/connec.gif
Connecting http://MyServer/24/connec.gif with proxy=197.168.1.100:808
Connecting http://MyServer/24/connec.gif with cookie "ASPSESSIONIDQQGQQCYU=GBJFAOABCJFPDMGFHEKLDACA; JSESSIONID=26yu5m1b4upVuXoAoDmtMbWXQmetQpyzqjFANszo9vFubujT4qGX!-1149265879"
Opening http://MyServer/24/cool.gif
Connecting http://MyServer/24/cool.gif with proxy=197.168.1.100:808
Connecting http://MyServer/24/cool.gif with cookie "ASPSESSIONIDQQGQQCYU=GBJFAOABCJFPDMGFHEKLDACA; JSESSIONID=26yu5m1b4upVuXoAoDmtMbWXQmetQpyzqjFANszo9vFubujT4qGX!-1149265879"
etc
I can't set the plugin at client to use automatic script just like IE browser uses. This option is not supported in JRE1.3.1. Looks to be supported in JRE1.4.1. My client doesn't want to set manual proxy ip and port in plugin as they don't want to reveal this info to everyone within the company for security reason.
Q.2. Why some classes like PanelBeanInfo.class, JAppletBeanInfo.class are downloaded
from my server while it doesn't exist at my webserver. Any thing stupid IE or plugin doing
at client. Any Idea?
Thanks in advance for any help.
Ratan

Thanks to Mike and other friends who already replied on this topic.
Here is my research analysis:
Answer to Question 1:
~~~~~~~~~~~~~~~~~~~~~
The solution is to bundle all the images with JAR. Bundle with jar whichever needs it. However, it might require duplicacy.
Image img = null;
try
img = Toolkit.getDefaultToolkit().getImage(getClass().getResource(fileName));
catch (Exception e) { }
In this case make sure that you have image at the same location where you access it. For example if you have to access an image in package class com.awt.ui.MyClass then your image should also be at location ..\com\awt\ui
Note: It will require image duplicacy in your JAR but it solves the problem. It gives the advantage of fewer download from server.
Answer to Question 2:
~~~~~~~~~~~~~~~~~~~~~
IE treats applet as an active-X and try to look for these classes in your JAR. SUN has stopped its support in JDK1.3.1 and plus. What one can do is to create dummy classes with these names and bundle it with your JAR. You have to create these dummy classes if you enable Basic authentication on your web server then browser will try to look for these classes on the server and continue to prompt you for login and password. It might bother your customer un-necessarily to enter login and password too many times prompted by plug-in (plug in).
--Ratan

Best IDE and how-to create HTML for a swing Applet

Can you help me out? I've been using, and teaching with the old Symantec VisualCafe product from long, long, ago. It still works fine & I can even use it to build JFC/Swing Applets etc. But a few things have occurred. For one, a way back, Symantec sold VisualCafe to WEBGAIN - who now has gone out of business and sold it to a company called TOGETHERSOFT - who doesn't support it any longer.
This isn't really a big deal to me, because I can still build and deploy applets that are pre-swing easily enough. (as can my students)
HOWEVER... I'd like to be running with the LATEST Java (I think it's 1.4.01) and I'd LIKE to use whatever is the best development environment I can use - especially one I can recommend to my students. Do you know what that should be?
What's more, I'd still like to take some JFC/Swing created applets (even if compiled with the older VisualCafe IDE) and generate the HTML to allow 1.4 enabled browsers to run them (this is the case for the schools versions of Explorer and Netscape). Now, the HTML I have INSTALLED for the students used the HTML converter - back in 1.2 to produce the HTML at the bottom of this. This code no longer works now with current browsers. Do you know HOW one makes a jfc/swing compiled applet run on the latest browsers?
Any help or direction you can give would be appreciated.
thanks,
Bobby Berns
[email protected]
<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
WIDTH = 756 HEIGHT = 396 codebase="http://java.sun.com/products/plugin/1.2/jinstall-12-win32.cab#Version=1,2,0,0">
<PARAM NAME = CODE VALUE = "lottery.class" >
<PARAM NAME="type" VALUE="application/x-java-applet;version=1.2">
<COMMENT>
<EMBED type="application/x-java-applet;version=1.2" java_CODE = "lottery.class" WIDTH = 756 HEIGHT = 396 pluginspage="http://java.sun.com/products/plugin/1.2/plugin-install.html"><NOEMBED></COMMENT>
</NOEMBED></EMBED>
</OBJECT>



Bobby,
It's been a while since I've used the HTML Converter, but if I had to guess I'd say you need a newer version than what you have. Also, doesn't the converter allow you to choose which JDK you want to use (in which case you could select 1.4)? Again it's been a while so bear with me. Another option would be to put all the Swing classes into a .jar file (typically called swingall.jar) on your server and include that file as an attribute in your applet tag like this:
<APPLET CODE="yourApplet.class" ARCHIVE="swingall.jar">
This way you don't have to use the Java Plug-in, however the initial download time of the .jar file can be significant.
As for an IDE, I've always been happy using a text editor like UltraEdit. However, I've heard good things about Forte, and hey, it's free!
Regarding Christina's post, that solution will only work if the Applet does not use Swing components (and Bobby specifically said it does). By using the <OBJECT> and <EMBED> tags, rather than the <APPLET> tag, you force the browser to use the Java Plug-in (rather than the browser's default JVM).
Hope that helps,
- Sheepy

Java Swing Applets in Mac Os

hi there,
I am a student at the University of Portsmouth in the UK in my third and last year. I am doing my dissertation as a game using applets for a client at the university of which there consits four prototypes. One of the main specification points is that it should work on an apple mac, therefore I am using Swing applets. however with my first prototype it works fine on windows in windows Explorer, firefox and Netscape but i cant get it to work on Mac os 9 or X even with the latest version of java installed on the machine. Can anyone tell me why this is so, I would be very gratefull.
As I cant post the whole applet here as a file download I will just put some code snippets of the main program classes.
Applet ------------------------------
* Class JugglingBalls - A sub class of JApplet that combines the GameInterface and GamePanel into a single application
* @author (Liam Morren)
* @version (v1.0)
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import javax.swing.*;
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     * has been loaded into the system. It is always called before the first
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Interface -------------------------------------
* Class GameInterface - Lets you manipulate the game components using swing components
* @author (Liam Morren)
* @version (v1.0)
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
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        gameTabs.addTab("Background", makeBackgroundPanel());
        add(gameTabs); // Add the tab to the game interface panel
        setPreferredSize(new Dimension(200, 200));
    // Other methods ------------------------------------------------------------------------------------------------------------------------------------------
     * makeScenePanel
     * @return JPanel - The scene panel with buttons added
    private JPanel makeScenePanel()
        // Make scene panel
        JPanel scenePanel = new JPanel();
        scenePanel.setLayout(new BoxLayout(scenePanel, BoxLayout.Y_AXIS)); // Change layout
        pause = new JButton("Pause"); // Make buttons
        start = new JButton("Start");
        reset = new JButton("Reset");
        // Add button actions
        pause.addActionListener(new ActionListener() // Add button listener to pause button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                gameScene.setPaused(true); // Pause game
        start.addActionListener(new ActionListener() // Add button listener to start button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                gameScene.setPaused(false); // Unpause game
        reset.addActionListener(new ActionListener() // Add button listener to reset button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                gameScene.reset(); // Reset game
                updateSelectBallComboBox();
                changeSelectedBall(0);
        scenePanel.add(pause); // Add buttons to scene panel
        scenePanel.add(start);
        scenePanel.add(reset);
        return scenePanel;
     * makeBackgroundPanel
     * @return JPanel - The background panel with buttons added
    private JPanel makeBackgroundPanel()
        // Make scene panel
        JPanel backgroundPanel = new JPanel();
        backgroundPanel.setLayout(new GridLayout(5, 1, 2, 2)); // Change layout
        // Make buttons
        // background colour buttons
        JPanel backgroundcolour = new JPanel(); // Change backgroundcolour panel
        backgroundcolour.setBorder(BorderFactory.createLineBorder(Color.black));
        black = new JRadioButton("Black"); // Radio buttons to change colour
        white = new JRadioButton("white");
        black.setSelected(true); // Set black as already selected
        ButtonGroup backColourGroup = new ButtonGroup(); // Group buttons so only one can be pressed at a time
        backColourGroup.add(black); // Add buttons to group
        backColourGroup.add(white);
        backgroundcolour.setLayout(new GridLayout(2, 2, 0, 0)); // Change layout
        backgroundcolour.add(new JLabel("Background colour")); // Add label
        backgroundcolour.add(black); // Add buttons to colours panel
        backgroundcolour.add(white);
        // Add radio button actions
        black.addActionListener(new ActionListener() // Add button listener to black button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                gameScene.setBackgroundColour(false); // Background colour = black
        white.addActionListener(new ActionListener() // Add button listener to white button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                gameScene.setBackgroundColour(true); // Background colour = white
        // colour buttons
        JPanel colours = new JPanel(); // Change colours panel
        colours.setBorder(BorderFactory.createLineBorder(Color.black));
        red = new JRadioButton("Red"); // Radio buttons to change colour
        green = new JRadioButton("Green");
        green.setSelected(true); // Set green as already selected
        blue = new JRadioButton("Blue");
        ButtonGroup colourGroup = new ButtonGroup(); // Group buttons so only one can be pressed at a time
        colourGroup.add(red); // Add buttons to group
        colourGroup.add(green);
        colourGroup.add(blue);
        colours.setLayout(new GridLayout(2, 2, 0, 0)); // Change layout
        colours.add(new JLabel("Change colours")); // Add label
        colours.add(red); // Add buttons to colours panel
        colours.add(green);
        colours.add(blue);
        // Add radio button actions
        red.addActionListener(new ActionListener() // Add button listener to red button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                if (gameScene.getBackgroundEffect().getColour() != 0)
                    gameScene.getBackgroundEffect().setColour(0); // Background effect colour = red
        green.addActionListener(new ActionListener() // Add button listener to green button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                if (gameScene.getBackgroundEffect().getColour() != 1)
                    gameScene.getBackgroundEffect().setColour(1); // Background effect colour = green
        blue.addActionListener(new ActionListener() // Add button listener to blue button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                if (gameScene.getBackgroundEffect().getColour() != 2)
                    gameScene.getBackgroundEffect().setColour(2); // Background effect colour = blue
        // hide buttons
        JPanel hideShow = new JPanel(); // Change hideShow panel
        hideShow.setBorder(BorderFactory.createLineBorder(Color.black));
        hide = new JRadioButton("Hide"); // Radio buttons to hide show
        show = new JRadioButton("Show");
        show.setSelected(true); // Set show as already selected
        ButtonGroup hideShowGroup = new ButtonGroup(); // Group buttons so only one can be pressed at a time
        hideShowGroup.add(hide); // Add buttons to group
        hideShowGroup.add(show);
        hideShow.setLayout(new GridLayout(2, 2, 0, 0)); // Change layout
        hideShow.add(new JLabel("Hide / Show")); // Add label
        hideShow.add(hide); // Add buttons to hideShow panel
        hideShow.add(show);
        // Add radio button actions
        hide.addActionListener(new ActionListener() // Add button listener to hide button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                    gameScene.getBackgroundEffect().hide(); // Hide
        show.addActionListener(new ActionListener() // Add button listener to show button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                    gameScene.getBackgroundEffect().unHide(); // Unhide
        // stopMove buttons
        JPanel stopMove = new JPanel(); // Change StopMove panel
        stopMove.setBorder(BorderFactory.createLineBorder(Color.black));
        stop = new JRadioButton("Stop"); // Radio buttons to stop move
        move = new JRadioButton("Move");
        stop.setSelected(true); // Set stop as already selected
        ButtonGroup stopMoveGroup = new ButtonGroup(); // Group buttons so only one can be pressed at a time
        stopMoveGroup.add(stop); // Add buttons to group
        stopMoveGroup.add(move);
        stopMove.setLayout(new GridLayout(2, 2, 0, 0)); // Change layout
        stopMove.add(new JLabel("Stop / Move")); // Add label
        stopMove.add(stop); // Add buttons to stopMove panel
        stopMove.add(move);
        // Add radio button actions
        stop.addActionListener(new ActionListener() // Add button listener to stop button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                    gameScene.getBackgroundEffect().setMove(false); // stop
        move.addActionListener(new ActionListener() // Add button listener to move button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                    gameScene.getBackgroundEffect().setMove(true); // move
        // changePath buttons
        JPanel changePath = new JPanel(); // Change changePath panel
        changePath.setBorder(BorderFactory.createLineBorder(Color.black));
        arch = new JRadioButton("Arch"); // Radio buttons to change path
        figureOfEight = new JRadioButton("Figure of eight");
        arch.setSelected(true); // Set stop as already selected
        ButtonGroup changePathGroup = new ButtonGroup(); // Group buttons so only one can be pressed at a time
        changePathGroup.add(arch); // Add buttons to group
        changePathGroup.add(figureOfEight);
        changePath.setLayout(new GridLayout(2, 2, 0, 0)); // Change layout
        changePath.add(new JLabel("Change Path")); // Add label
        changePath.add(arch); // Add buttons to changePath panel
        changePath.add(figureOfEight);
        // Add radio button actions
        arch.addActionListener(new ActionListener() // Add button listener to arch button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                    gameScene.getBackgroundEffect().setPath(new Arch()); // Arch
        figureOfEight.addActionListener(new ActionListener() // Add button listener to figureOfEight button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                    gameScene.getBackgroundEffect().setPath(new FigureOfEight()); // Figure of eight
        // Add components to background panel
        backgroundPanel.add(backgroundcolour);
        backgroundPanel.add(colours);
        backgroundPanel.add(hideShow);
        backgroundPanel.add(stopMove);
        backgroundPanel.add(changePath);
        return backgroundPanel;
     * makeBallsPanel
     * @return JPanel - The ball panel with buttons added
    private JPanel makeBallsPanel()
        // Make balls panel
        JPanel ballsPanel = new JPanel();
        ballsPanel.setLayout(new BoxLayout(ballsPanel, BoxLayout.Y_AXIS)); // Change layout
        // Make buttons
        // set all drop down boxes
        JPanel setAll = new JPanel(); // Set all panel
        setAll.setBorder(BorderFactory.createLineBorder(Color.black));
        String[] setAllPathsChoices = {"Arch", "Figure of eight"}; // Selections for set all paths
        setAllPaths = new JComboBox(setAllPathsChoices); // Add selections to combo box
        String[] setAllTypesChoices = {"Primary ball", "Pastel ball", "3D ball", "Image ball"}; // Selections for set all types
        setAllTypes = new JComboBox(setAllTypesChoices); // Add selections to combo box
        setAll.add(new JLabel("Set all paths")); // Add combo boxes to set all panel
        setAll.add(setAllPaths);
        setAll.add(new JLabel("Set all types"));
        setAll.add(setAllTypes);
        // Add combo box actions
        setAllPaths.addActionListener(new ActionListener() // Add selection listener to set all paths combo box
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                if (setAllPaths.getSelectedItem() == "Arch")
                    gameScene.setAllPathsArch();
                else
                    gameScene.setAllPathsFigureOfEight();
        setAllTypes.addActionListener(new ActionListener() // Add selection listener to set all types combo box
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                if (setAllTypes.getSelectedItem() == "Primary ball")
                    gameScene.setAllTypesPrimaryBall();
                else if (setAllTypes.getSelectedItem() == "Pastel ball")
                    gameScene.setAllTypesPastelBall();
                else if (setAllTypes.getSelectedItem() == "Image ball")
                    gameScene.setAllTypesImageBall();
                else
                    gameScene.setAllTypesBall3D();
        // new ball drop down box
        JPanel newBallPanel = new JPanel(); // new ball panel
        newBallPanel.setBorder(BorderFactory.createLineBorder(Color.black));
        String[] newType = {"Primary ball", "Pastel ball", "3D ball", "Image ball"}; // Selections for new ball
        newBall = new JComboBox(newType); // Add selections to combo box
        newBallPanel.add(new JLabel("New ball")); // Add combo boxes to new ball panel
        newBallPanel.add(newBall);
        // Add combo box actions
        newBall.addActionListener(new ActionListener() // Add selection listener to newBall combo box
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                String ballType = (String) newBall.getSelectedItem();
                if (ballType == "Primary ball")
                    gameScene.addBall(new PrimaryBall(gameScene));
                else if (ballType == "Pastel ball")
                    gameScene.addBall(new PastelBall(gameScene));
                else if (ballType == "Image ball")
                    gameScene.addBall(new ImageBall(gameScene));
                else
                    gameScene.addBall(new Ball3D(gameScene));
                updateSelectBallComboBox();
                changeSelectedBall(gameScene.getBalls().size() - 1); // Update interface to show new ball
        // selected ball panel
        JPanel selectedBallPanel = new JPanel(); // selected ball panel
        selectedBallPanel.setBorder(BorderFactory.createLineBorder(Color.black));
        // Select ball
        selectBall = new JComboBox(gameScene.getBallList()); // Add ball list to the select drop down box
        deleteBall = new JButton("DeleteBall"); // Delete button
        // Ball colour
        redBall = new JRadioButton("Red"); // Red choice
        redBall.setSelected(true); // Start as selected
        greenBall = new JRadioButton("Green"); // Green choice
        blueBall = new JRadioButton("Blue"); // Blue choice
        ButtonGroup ballColour = new ButtonGroup(); // So only one colour can be selected at a tim
        ballColour.add(redBall);
        ballColour.add(greenBall);
        ballColour.add(blueBall);
        // Path
        archBall = new JRadioButton("Arch"); // Arch path choice
        archBall.setSelected(true); // Start as selected
        figureOfEightBall = new JRadioButton("Figure of eight"); // Figure of eight path choice
        ButtonGroup ballPath = new ButtonGroup(); // So only one path can be selected at a tim
        ballPath.add(archBall);
        ballPath.add(figureOfEightBall);
        // Can split
        canSplit = new JCheckBox("Can split", false); // Initialy not selected
        selectedBallPanel.add(new JLabel("Select ball")); // Add components to selected ball panel
        selectedBallPanel.add(selectBall);
        selectedBallPanel.add(deleteBall);
        selectedBallPanel.add(new JLabel("Ball colour"));
        selectedBallPanel.add(redBall);
        selectedBallPanel.add(greenBall);
        selectedBallPanel.add(blueBall);
        selectedBallPanel.add(new JLabel("Path"));
        selectedBallPanel.add(archBall);
        selectedBallPanel.add(figureOfEightBall);
        selectedBallPanel.add(canSplit);
        // Add select ball drop down box action
        selectBall.addActionListener(new ActionListener() // Add selection listener to selectBall combo box
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                changeSelectedBall(selectBall.getSelectedIndex()); // Change the selected ball using the index from the select ball drop down box
        // Add delete button action
        deleteBall.addActionListener(new ActionListener() // Add selection listener to deleteBall button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                int tempIndex = selectBall.getSelectedIndex(); // Temp index
                if (gameScene.getBalls().size() > 1) // If there is more than 1 ball left
                    gameScene.removeBall(tempIndex); // Remove ball
                    updateSelectBallComboBox(); // Update with new ball list
                    changeSelectedBall(tempIndex - 1); // Update interface with new current selected ball
        // Add radio button colour actions
        redBall.addActionListener(new ActionListener() // Add button listener to redBall button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                if (currentBall.getColour() != 0)
                    currentBall.setColour(0); // currentBall colour = red
        greenBall.addActionListener(new ActionListener() // Add button listener to greenBall button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                if (currentBall.getColour() != 1)
                    currentBall.setColour(1); // currentBall colour = green
        blueBall.addActionListener(new ActionListener() // Add button listener to blueBall button
            public void actionPerformed(ActionEvent ev) // Background colour = blue
                if (currentBall.getColour() != 2)
                    currentBall.setColour(2); // currentBall colour = blue
        // Add path radio button actions
        archBall.addActionListener(new ActionListener() // Add button listener to arch button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                    currentBall.setPath(new Arch()); // Arch
        figureOfEightBall.addActionListener(new ActionListener() // Add button listener to figureOfEight button
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                    currentBall.setPath(new FigureOfEight()); // Figure of eight
        // Add can split check button actions
        canSplit.addActionListener(new ActionListener() // Add button listener to can split
            public void actionPerformed(ActionEvent ev) // Overide actionPerformed() method
                    currentBall.setCanGiveBirth(canSplit.isSelected()); // Ball can split if can split check button is selected
        // Add components to ball panel
        ballsPanel.add(setAll);
        ballsPanel.add(newBallPanel);
        ballsPanel.add(selectedBallPanel);
        return ballsPanel;
     * changeSelectedBall
     * @param ballIndexIn - The numbered index of the ball in the game scene list of balls. If less than 0 then equals 0. If more than ball list size then equals last ball
    public void changeSelectedBall(int ballIndexIn)
        if (ballIndexIn < 0) // Make sure index is within bounds
            ballIndexIn = 0;
        else if (ballIndexIn >= gameScene.getBalls().size())
            ballIndexIn = gameScene.getBalls().size() - 1; // Else put within bounds at either end
        currentBall.highlight(false); // Unhighlight current ball
        currentBall = gameScene.getBall(ballIndexIn); // Get new current ball
        currentBall.highlight(true); // Highlight new current ball
        // Update controls to new ball
        selectBall.setSelectedIndex(ballIndexIn);
        switch (currentBall.getColour()) // Update colour controls
            case 0: redBall.setSelected(true); break;
            case 1: greenBall.setSelected(true); break;
            default: blueBall.setSelected(true); break;
        if (currentBall.getPath() instanceof Arch) // If path is arch
            archBall.setSelected(true); // Update controls as arch
        else
            figureOfEightBall.setSelected(true); // Else figure of eight
        canSplit.setSelected(currentBall.canGiveBirth()); // Set if the ball can split or not
     * updateSelectBallComboBox
     * This method updates the combo box selection model with a new one made from the updated balls arraylist from the game scene
    public void updateSelectBallComboBox()
        DefaultComboBoxModel model = new DefaultComboBoxModel(gameScene.getBallList());
        selectBall.setModel(model);
}Kind regards
Liam morren

http://docs.info.apple.com/article.html?artnum=301073
This link states Mac OS X 10.4 now supports Java 5.0. It does mention nothing about Mac OS 9 or previous version of OS X. The problem you may be facing is that your Mac is running only 1.4.2 or less. The class files compiled for Java 5.0 can't run in non 5.0 versions of the Java Virtual Machine. Java 5.0 was a major release for the Java language and thus the change in numbering (though it took a little bit for this to change).
Anyway you should confirm what version of Java you have installed on your Mac.
At a command prompt:
java -version
The above URL states that the previous 1.4.2 Java version is not uninstalled, and this could still be the preferred version to use for Java applications even after installing Java 5.0.
The URL above states there is a utility to set your apps to use Java 5.0 as the perferred Java version. Who knows maybe this is all you need to do. I hope this is the case, then it probably is an easy fix, otherwise you may need to rewrite your app in Java 1.4.2 to get it to run on your version of Mac.

Getting Applet to Work in an HTML Document

I have written an Applet which works perfectly in the Applet Viewer, but crashes when I attempt to put it on my web page. The crash gives no errors, no exceptions, no nothing. Just a grey square with the words "Applet Crashed". I tried it both with the files in a .jar,and with all the files uncompressed, and used the W3C's code validator at http://validator.w3.org/ to verify that my HTML is correct.
The HTML code using the .jar file is:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<a bunch of HTML code>
<object data="ComicTemplate.class" type="applet/java" archive="AICS.jar" WIDTH=620 HEIGHT=650>
If you can read this, your broswer doesn't support Java. Go to Sun's website to get the latest version of Java. You may also need to turn on Java in your browser's preferences.
</object>
<more HTML>
</html>
The code without the .jar is the same, except that the archive lists the 8 .class files and 18 images used individually.
Any advice?

I tried it both ways. It works using either method in the applet viewer, but niether works in the browser.
In the good news, however, I found a hidden Java console inmy browser, which did have some error messages. Cut-n-pasted:
-- Opera Java Console --
Java vendor: Sun Microsystems Inc.
Java version: 1.4.1_02
type 'h' for help
java.security.AccessControlException: access denied (java.io.FilePermission Hunter.jpg read)
     at java.security.AccessControlContext.checkPermission(AccessControlContext.java:270)
     at java.security.AccessController.checkPermission(AccessController.java:401)
     at java.lang.SecurityManager.checkPermission(SecurityManager.java:542)
     at java.lang.SecurityManager.checkRead(SecurityManager.java:887)
     at sun.awt.SunToolkit.getImageFromHash(SunToolkit.java:486)
     at sun.awt.SunToolkit.getImage(SunToolkit.java:500)
     at javax.swing.ImageIcon.<init>(ImageIcon.java:81)
     at javax.swing.ImageIcon.<init>(ImageIcon.java:107)
     at Panel1.<init>(Panel1.java:24)
     at Comic.<init>(Comic.java:22)
     at ComicTemplate.<init>(ComicTemplate.java:26)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
     at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
     at java.lang.Class.newInstance0(Class.java:306)
     at java.lang.Class.newInstance(Class.java:259)
     at com.opera.PluginPanel.run(PluginPanel.java:412)
     at java.lang.Thread.run(Thread.java:536)

How to show a html page in a swing applet -- URGENT!!!

Hi All,
I'm trying to show a html page inside a swing applet... is it possible to do that?? if so is there any built-in classes available for that?? If anyone have some examples, plz help me with that....
Thanks,
Ragu

i havent tested.. but this should work. i am no expert on these either, just to give you an example.. :-)
JEditorPane ePane = new JEditorPane();
HTMLEditorKit html = new HTMLEditorKit();
ePane.setEditorKit(html);
HTMLDocument htmld = new HTMLDocument();
try{
URL url = new URL("http://hcs.harvard.edu/~undercon/");
InputStream ins = url.openStream();
ePane.setDocument(htmld);
html.read(ins,htmld, 0);
this.getContentPane().add(new JScrollPane(ePane),BorderLayout.CENTER);
catch(Exception e)
e.printStackTrace();
}

PDF document in a Swing Applet?

How can you display a PDF document in a Swing Applet?

I have implemented a document archiving solution that provides a Swing UI to search a database for available documents. All the documents in the archive are in the PDF format. To accomplish this I use an html frameset where a Swing applet is displayed in one frame and the PDF document is displayed in the lower frame. I use LiveConnect to have my javascript communicate with the applet. My applet calls a javascript function that causes the URL of the lower frame point to the PDF document. This works fine, but I would rather use an all Java UI instead of depending on the browser and javascript.
How can we get Adobe or Sun to address this need?

Which command i use to run SWING APPLET

Hi friends,
i m a new in swing technology i got and problem when i run swing applet .
i make a file and complie it with -deprecation it work and make a .class file but how can i run this applet [i use jview command , appletviewer command but it can't work]
i hope that someone hellp me.

Just as a matter of interest and i know its a stupid question, but did you create a html file to access the class file/jar
Here is some example code of an applet html page
Hope it helps...
Also have you put it in a Jar file?
<html>
<head>
<title>(Whatever title youu want)</title>
<BODY TEXT="#000000" BGCOLOR="#FFFFFF" LINK="#0000EE" VLINK="#551A8B" ALINK="#FF0000">
<TR>
<APPLET CODE = "ClassName.class" ARCHIVE = "JarName.jar" WIDTH = "800" HEIGHT = "600"></XMP>
<PARAM NAME = CODE VALUE = "ClassName.class" >
<PARAM NAME = ARCHIVE VALUE = "JarName.jar" >
<PARAM NAME="type" VALUE="application/x-java-applet;version=1.3">
<PARAM NAME="scriptable" VALUE="false">
<dont worry about this>(they just variables for my applet)
<PARAM NAME = SERVER_IP VALUE ="192.1.1.209">
<PARAM NAME = SERVER_PORT VALUE =8701>
<PARAM NAME = DEBUG VALUE =true>
<PARAM NAME = REFRESH VALUE =10000>
<PARAM NAME = TAIL_REFRESH VALUE =2500>
<PARAM NAME = MESSAGE_TIMEOUT VALUE =60>
</dont worry about this>
</APPLET>
</body>
</html>

Swing Applets and javascript

I'm writing a swing applet to do some rich text editing, mainly bolding, italicizing, etc as well as support for special characters (greek letters, etc). Rather than using the HTMLEditor kit (which I've heard suspect things about), I am going through the document tree and creating a corresponding HTML version of the string (inserting HTML entities based on position in the document). I am planning on exposing these to the client via javascript, but I have run into some problems with document.applets.appletName.publicMethodName. I've gotten this to work on IE for the PC. I am aware that there are some issues with the Sun plug-in for Netscape on PC. An additional complication is that this needs to work on a Macintosh as well. Does anyone know if the MRJ plugin supports this behavior (for both IE and Netscape)? Is there a better way to go about doing this, rather than using javascript to expose the HTMLized version of the string? Thanks in advance.
Tim

You must to check if the mrj plug-in is the same version to the jre1.3, because the jre 1.3 supports the javascript events. other way is incorporate in your applet the javascript class, in the next web page you will find the js.jar http://www.mozilla.org/rhino/download/
if you have troubles write me to
[email protected]
good luck
Carlos Sanhueza
Santiago de Chile

Swing Applet - doesnt work

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