JOptionPane and Applets

How do I get rid of the "Applet window" status bar on the message boxes using JOptionPane, when I use the same in an applet?

sign your applet.

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JOptionPane and Applet problem

Hi folks,
I have an applet, I want to display a pop up dialog whenever the user
does something. SO i used JOptionPane:
int userIn=JOptionPane.showInternalConfirmDialog(this,"Do you wish to generate xml for each ics/ids files pair in this data set?", "information",JOptionPane.YES_NO_CANCEL_OPTION, JOptionPane.INFORMATION_MESSAGE);
//repaint();
The dialog just doesn't show up, I tried repaint(), tried JApplet, nothing works, what am I missing? I'm pretty sure the above code gets called.
thanks

A. Are you sure this code is executing?
B. Are you sure you aren't getting an error, possibly something like
java.lang.RuntimeException: JOptionPane: parentComponent does not have a valid parent
at javax.swing.JOptionPane.createInternalFrame(JOptionPane.java:1161)
at javax.swing.JOptionPane.showInternalOptionDialog(JOptionPane.java:1025)
at javax.swing.JOptionPane.showInternalConfirmDialog(JOptionPane.java:967)
at javax.swing.JOptionPane.showInternalConfirmDialog(JOptionPane.java:931)

JOptionPane and JDialog.DO_NOTHING_ON_CLOSE broken?

Hi there
I've created a JDialog from a JOptionPane and I don't want the user to simply dispose of the dialog by clicking on the close button but they are still able and I'm sure that my code is correct. Is it my code that is wrong or is it a java bug? Oh I'm running on 1.3 BTW
JFrame f = new JFrame();
f.setSize(500, 500);
f.setVisible(true);
JOptionPane optionPane = new JOptionPane("Hello there", JOptionPane.INFORMATION_MESSAGE, JOptionPane.OK_CANCEL_OPTION);
JDialog d = optionPane.createDialog(f, "Testing");
d.setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
d.setVisible(true);I know that I can just set up a JDialog directly and use the setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE) and it seems to work properly but I would like to see it work for JOptionPane!
Thanks in advance

Sorry but this doesn't make it work either. I've looked at the code for createDialog in JOptionPane and it actually adds a WindowListener to the dialog in there as well as a propertyListener. On closing the option pane it calls a method in windowClosing of the windowListener which in turn fires a property change event which then tells the dialog to dispose itself so the addition of another windowAdapter to override the windowClosing method will not help :-(
I've managed to get round it by doing something similar to
JFrame frame = new JFrame();
final JDialog dialog = new JDialog(frame, "Testing", true);
JButton button = new JButton("OK");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dialog.dispose();
JOptionPane optionPane = new JOptionPane(button, JOptionPane.INFORMATION_MESSAGE, JOptionPane.OK_CANCEL_OPTION);
dialog.setContentPane(optionPane);
dialog.setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
dialog.pack();
dialog.setVisible(true);

Is it possible to run a website built in Java and applet from Safari browser in iPad

Is it possible to run a website built in Java and applet from Safari browser in iPad?

Java isn't supported on the iPad

JDev3.0's JSP and Applet works on NT but doesn't work on Win98, why?

JDeveloper3.0 works fine on WindowNT machine when I run JSP files and Applet, but at home the JDeveloper3.0 cannot trigger the browser to display the result on my Windows98 machine when I run the JSP files or Applet. Why? How can I make it works for me at home. Other tools, such as J++6.0 and JBuilder work with Applet on the same machine. Who can help me?

James,
The JDeveloper 3.0 design time environment is not supported on Windows98. Some functions might work under Win98 but they are not supported.
Sorry!
Regards,
Arun

Help on assignment, don't understand JOptionPane and showInputDialog

Hi, I am currently studying java and have problems doing my assignment. here is the assignment question. What I am looking for is pointers and hints to start on my assignment. I am not looking for the source code, rather the way to actually understand it and start writting my code
I believe this assignment wanted me to create a class Object called Zeller with the methods in it and a ZellerTester to test the Object?
I read up on the JOptionPane and the showInputDialog, but don't really quite understand it.
Do i need a constructor for the Object Zeller?
Does my assignment require me to put the showInputDialog as a method in the Zeller class? Or put it in the ZellerTester?
The isLeapYear is a method in the Object Zeller?
Here is the assignment question
Examine the method
showInputDialog() and study its function. Note the return type of this method.
Write a program on the following requirements:
1. Use the JOptionPane facility to ask the user for three positive integers,
representing the day, month and year of a date.
2. Use the Zeller�s congruence formula to find the day of the week.
3. Should include a method boolean isLeapYear(int year)
that will return true if year is a leap year, and false otherwise.
The method should check for leap years as follow:
return true if the year is divisible by 400.
return true if the year is divisible by 4 but not by 100
return false for the remaining values
Thank you.

I can't seems to return the method back to the main
Not sure where has gone wrong...
here is my code
import javax.swing.*;
public class ZellerTester
    public static void main(String[]args)
    int day = 28;
    int month = 2;
    int year = 2007;
    int z;
    boolean isLeapYear;
    String[] displayName = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
    if(month==1 || month==2) {
        if (isLeapYear = false)
            day = day-1;
          else
            day = day-2;
    if(month<3)
        month = month + 12;
    z = (1 + day + (month * 2) + (3 * (month + 1) / 5) +
         year + year / 4 + year / 400 - year/ 100) % 7;
    System.out.println("The day is " +displayName[z]);
public boolean isLeapYear(int year)
       if (year%400 == 0)
           return true;
       else if((year%4 == 0) && (year%100 != 0))
            return true;
       else
             return false;
}

Regarding communication between JSF and applet.

Hi all,
I have to send a array of int value from JSF to the applet method and vice versa,
so how can I do that?
Is there any straight forward way is there?
Or I need to use javascript in between applet and JSF for communicating.
If this is case can give some links so that I can go through it.
What I need is, I have jsf table(grid) when I select a row from table, for the selected row I have to display selected row ID in applet and vice versa.
Any suggestion or links will be appreciated, thanks in advance.
Thanks
daya

thanks and sorry for late reply, let me go through the link,
i have tried with JavaScript, i got stuck, i need to call a JavaScript method for JSF component event listener. I searched in Google but no help regarding same.
Actually what I need is, I have JSF Component i.e. GridView(Table) and applet in a page. And for each row selection in GridView(table) I need to call a javascript method (with column value), and vice versa.
Can you give suggestion or any link so that can proceed further.
and i am able to communicate between applet which are included in the page
Thanks
Daya

How to change the icon of JOptionPane and JFileChooser in swing

Hi,
Does any body know how to change the icon of JOptionPane and JFileChooser in swing.
Please help me out in this.
Thanx in advance.

Try this
import javax.swing.*;
import java.awt.event.*;
public class Untitled4 {
public Untitled4() {
public static void main(String[] args) {
    ImageIcon i = new ImageIcon("C:/TestTree/closed.gif");
    JOptionPane p = new JOptionPane();
    p.setMessage("This JOptionPane has my icon");
    p.setMessageType(JOptionPane.QUESTION_MESSAGE);
    p.setOptionType(JOptionPane.YES_NO_CANCEL_OPTION);
    final JDialog d = p.createDialog("test");
    d.setIconImage(i.getImage());
    d.setVisible(true);
    d.setModal(true);
    if(Integer.parseInt(p.getValue().toString()) == JOptionPane.YES_OPTION) {
        System.out.println("You Clicked Yes");
}

Adf faces table and applet in jsf page navSubmit not working in IE

Hi
I have a jsf page with adf faces table and applet , previous / next navigation is not working for my table when i add the applet to the same page , it is working in firefox but not in IE .
I have no clue what to change , can any one help. below is the sample code for my jsf page
Best regards
Srinivas
Code follows, not sure how to format the code here
<h:form>
<af:panelPage title="Test Adf faces table and applet">
<af:panelHeader text="Orders">
<af:table value="#{bindings.Orders.collectionModel}" var="row"
rows="#{bindings.Orders.rangeSize}"
first="#{bindings.Orders.rangeStart}"
emptyText="#{bindings.Orders.viewable ? 'No rows yet.' : 'Access Denied.'}"
id="orders" >
<af:column sortProperty="order"
headerText="#{bindings.Orders.labels.order}">
<af:commandLink text="#{row.order}"
id="orderNumber"
onclick="showOrder(#{row.order})"
disabled="false"/>
</af:column>
               </af:table>
</af:panelHeader>
<af:objectSpacer width="10" height="10"/>
<af:panelBox>
<f:verbatim>
<div id="appletDiv">
                    <applet here />
                    </div>
</f:verbatim>
</af:panelBox>
</af:panelHorizontal>
</af:panelPage>
</h:form>

Sorry about the format, it looked okay when i previewed it , now it looks like terrible

Package and applet

I am reading about Zhiqun's Java Card book,
and I wonder about the relationship between a package and an applet.
Am I right in saying:
1. An applet comprises one or several packages
2. A package only belongs to one applet
3. One package is one group context
Hope to get your guidance.
B.R.
RuHE

Refers to your assertions,
Please help me..
Case 1
I have package A. Package A contains 2 class (A1 & A2 ) and 2 package (B and C).
Then, I make 2 applet, they are applet-B (for package B) and applet-C (for package C).
When simulationi in JCWDE, applet-B and applet-C have no problem. But, in CREF, applet throw exception and status word is 6443.
Case 2
When I try to include class A1 and A2 into package B and C, so package A is empy. Surprisingly, applet-B and applet-C can run in CREF and JCWDE. I don't know, what's wrong in case 1.
Can you give me explanation or explanation about problem in above...?
Best Regards,
Wiwit

JOptionPane and Threads

I have a Class called Execute which runs as a thread. If this fails, then I want to show a JOptionPane from the main thread saying it failed (this works), but also I want to create a JOptionPane within the run() method of Execute stating the reason for the failure.
I can not put a JOptionPane directly inside the run method 'cos it doesn't get rendered correctly, so I run this in it own thread. Only trouble is that now I have two modal dialog boxes appearing simultaneously; what I want is to have them appear consecutively. I have tried to join the thread that creates the pop-up but then it does not get rendered. Any ideas? I have posted an extract of the code below for testing
public class Execute implements Runnable {
     File success = new File ("/ukirtdata/orac_data/deferred/.success");
     File failure = new File ("/ukirtdata/orac_data/deferred/.failure");
     success.delete();
     failure.delete();
     try {
         success.createNewFile();
         failure.createNewFile();
     catch (IOException ioe) {
         logger.error("Unable to create success/fail file", ioe);
         return;
     SpItem itemToExecute;
     if (!isDeferred) {
         itemToExecute = ProgramTree.selectedItem;
         logger.info("Executing observation from Program List");
     else {
         itemToExecute = DeferredProgramList.currentItem;
         logger.info("Executing observation from deferred list");
     SpItem inst = (SpItem) SpTreeMan.findInstrument(itemToExecute);
     if (inst == null) {
         logger.error("No instrument found");
         success.delete();
         return;
     String tname = QtTools.translate(itemToExecute, inst.type().getReadable());
     // Catch null sequence names - probably means translation
     // failed:
     if (tname == null) {
         //new ErrorBox ("Translation failed. Please report this!");
         logger.error("Translation failed. Please report this!");
         new PopUp ("Translation Error",
                 "An error occurred during translation",
                 JOptionPane.ERROR_MESSAGE).start();
         success.delete();
         return;
     else{
         logger.info("Trans OK");
         logger.debug("Translated file is "+tname);
            failure.delete()
            return;
    public class PopUp extends Thread implements Serializable{
     String _message;
     String _title;
        int    _errLevel;
     public PopUp (String title, String message, int errorLevel) {
         _message=message;
         _title = title;
         _errLevel=errorLevel;
     public void run() {
         JOptionPane.showMessageDialog(null,
                           _message,
                           _title,
                           _errLevel);

Comeon,
Someone must have some idea. I have tried making popup extend JOptionPane and implement Runnable, added a window listener which sets a boolean popDisplayed on windowOpen and windowClose, but this gets me nowhere (I have a Thread.sleep in the code as well)

Appletviewer and applets

Hi!
I am using j2sdk 1.4.0 under linux. I have been creating an applet. The screen refresh is tied to a timer. However, the screen refresh gets very slow after 2 - 5 seconds after the applet has been started. If I move mouse in applets window, the refresh gets fast during that time.
The applet code is very simple: timer calls repaint method of the applet and applet's paint method just draws new picture to the screen using drawImage.
Anyone run into same problem? What could be wrong?
Thanks
Sammy

ok but whats the problem the fast refreshing??
if so then u have two options:
1)double buffering
2)if u dont need the re-paint let the java do it for u dont overide it
denny

JOptionPane and JList HELP!!!

Hi there,
I want to be able to use a JOptionPane and add these elements to my JList component. I know how to add elements to it through the source code but am not able to get a user to inout values into this JList. 've got my JOptionPane running by using the following code:
public void actionPerformed(ActionEvent ae) {
     if(ae.getActionCommand().equals("New Player")){
          s1 = JOptionPane.showInputDialog("Enter player: ");
          list.append(s1);
     repaint();
}I want the values taken from this Prompt and be shown in my JList. I tried doing:
list.addElement(s1);
list.append(s1);
I tried looking at the Java API website but didn't find it helpful at all of what I'm trying to do.

I keep getting an error on the line where it says:
list.add(s1);And even when I try:
list.addElement(s1);Still same error. Is it a different way of doing it?
Thanks for any response

Can I use AWT and Applets in a J2EE project???

Hi,
I adore applets and the package AWT... And I would like to know if some way exists to integrate my applet with my application J2EE... I want to use these in the vision tier in a J2EE(EJB) project...
How can I make that my applet acts as an observing process of my model??? If the JVM will be informed on any alterations in the model will be the JVM of the server while my applet will be being executed for the JVM of browser...
[]'s
Ary Junior

I have a J2EE application, for which I have a module which is used by system administrators. this module is completly written in Java swing.
and it does talk to my EJBs.
If you don't have a firewall in your application, then you can directly make your applications in awt, swing and applets talk to EJBs. if you do have a firewall, then just write a web-service wrapper over your EJBs and other J2EE components and use them from desktop applications.
It seems that you want to implement a kind of a applet based monitor application for your J2EE EJBs on the server. Applets cannot directly monitor your EJBs.
Create a new module which has a service which acts as an event listener on the server. each j2ee component on the server notify it if there is a change to them. this service, can then write the data realted to the modification on a socket which is continiously being read by the applet. So you can implement a kind of a monitor for J2ee apps with applets.
hope this helps.
regards,
Abhishek.
PS:How did you manage to adore the AWT ;-) ? I found that it sucks (good performance.. very poor lnf) ... java swing sucks too (very poor performance ... avaerage lnf).

Xml and applets

I'm trying to use Sax in an applet to read an xml file. My application works fine, but when I convert it to an applet, I get errors.
Does anybody know where I can get info and examples using Xml, Sax, and Applets? Any info would be helpful. Thanks.

Probably nothing to do with XML. You use it in an applet precisely as you would use it in an application. You are probably running into one of the usual applet problems. Of course, this is all guesswork without any idea of what errors you are actually having.

JOptionPane and Applets

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