Making GUI in servlet

i have made an application and its GUI using JFrames. The GUI is somewhat like a text editor PLUS option to execute my program on the text entered by the user. also, it has a window which shows the output/error messages. now, i want to web enable it. i.e. when the page is loaded, the user sees a similar GUI (as described above) on the page. and he shud be able to do similar things also. can somebody suggest, how can we achieve this using servlet or jsp
tia

hi
am also doing same kind of program...
by using jtree we can list all the users...
its very easy ...
u can use sun tutorial itself

Similar Messages

Making GUI update at correct time

I'm creating an engine that can display experimental stimuli for my lab working with kids with reading disabilities. I have a GUI which can display the next stimuli in the test. Once the stimuli are displayed, the program does nothing until the user presses a button and a key event is called.
I'm now trying to get my GUI to play recorded words to the user. Because it's the responsibility of the GUI to display stimuli, the GUI will be the one playing the sound (even though that's not typically thought of as a GUI responsibility). Unfortunately, even though the commands to update the GUI display are placed before the command to play the sound, the GUI does not update until it has finished playing the sound.
This has nothing to do with the sound itself: if I replace the clip.play() line with a loop that wastes time and spins around for five seconds, the GUI does not update for those five seconds.
The GUI updates itself the moment the program leaves the setStimuli() method. How can I get it to update itself before then? Commands such as this.repaint() don't appear to work.
Any thoughts on how to get the GUI to update itself before exiting the method?
public class TestingEngine {
public void setStimuli(String[] values) {
   gui.setStimuli(values);
public class GUI extends javax.swing.JFrame {
public void setStimuli(String[] values){
       switch (testType){
         case SOUND:
               String soundImageFile = "Headphones.jpg";
               ImageIcon soundImage = new ImageIcon(soundImageFile);
               JLabel soundImageLabel = new JLabel(soundImage);
               SoundImageJPanel.removeAll();
               SoundImageJPanel.repaint();
               SoundImageJPanel.add(soundImageLabel);
               soundImageLabel.setVisible(true);
               label_S_Option1.setText(values[1]);
               label_S_Option2.setText(values[2]);           // <-- nothing has updated yet
               SoundClip clip = new SoundClip(values[0]);
               if (clip.isInitialized())                     // <-- this section could also be replaced
                   clip.play();                             // by a time-wasting loop
               break;
    }      // <-- once program reaches here, GUI finally updates
}

Ok, so just for the sake of it, I tried using the Timer method as suggested in the thread you pointed me to. This doesn't do anything, but thinking about it, I don't see why it would. Timer calls repaint() every 50 ms, but, after all, the setStimuli() method also called repaint() before playing the soundclip. If the original call of repaint() didn't do anything, then I don't think that calling it more often would.
Is there another command that I should be using? In other words, how can I tell my JFrame and JLabels to "UPDATE RIGHT NOW, NOT IN A MINUTE!"? (It would be easier if I were the JFrame's mother...)
Current version of code, with Timer class:
public class GUI extends javax.swing.JFrame {
   private Thread refresh;
   public GUI() {
       initComponents();
       refresh = new Timer(this);
       refresh.start();
   public void setStimuli(String[] values){
       switch (testType){
         case SOUND:
               String soundImageFile = "Headphones.jpg";
               ImageIcon soundImage = new ImageIcon(soundImageFile);
               JLabel soundImageLabel = new JLabel(soundImage);
               SoundImageJPanel.removeAll();
               SoundImageJPanel.repaint();
               SoundImageJPanel.add(soundImageLabel);
               soundImageLabel.setVisible(true);
               label_S_Option1.setText(values[1]);
               label_S_Option2.setText(values[2]);           // <-- nothing has updated yet
               SoundClip clip = new SoundClip(values[0]);
               if (clip.isInitialized())                     // <-- this section could also be replaced
                   clip.play();                              // by a time-wasting loop (same problem)
               break;
   }      // <-- once program reaches here, GUI finally updates
   public void callback(){
       repaint();
class Timer extends Thread
     private Gui parent;
     public Timer(Gui g) {
          parent = g;
     synchronized public void run() {
          while(true) {
               try{
                   wait(50);
               }catch(InterruptedException ie) {return;}
               parent.callBack();
}

Making GUI in Swing

hello frends,
I am new to java , i make instant messenger, But it is console based
i want to add gui to it , But i don't know any technology(Applet ,Swing)
So please help me how to make gui for instant messenger, I tried to start but i have no good tutorial, But i got problem in Taking on line user list, sush that when i click the name new dialog will appear, will you please tell me how to do it, and also suggest some good books,and link that help me to make my messenger gui.
Thank you
alok

hi
am also doing same kind of program...
by using jtree we can list all the users...
its very easy ...
u can use sun tutorial itself

How to Read/Write to PS registry, tools for making GUI

Hi Folks,
We have several plugins that we would like to make available to our users by the Photoshop panel (made with Adobe Configurator).
Plugins are scripting aware, and also use reading and writing to Photoshop registry.
We also want that user can define settings for the plugin and to be able to call it by clicking on a button.
Only way that I could find is as follows:
User click on a settings button, and that calls java script that display dialog with settings.
There user can make choices and save them.
When user click on a run button script read settings from registry and calls plugin
or just call plugin (plugin can read from registry himself).
Now the questions:
What are the tools that are using to make dialogs in JS when you make java scripts to automate Photoshop?
How to read and write Photoshop registry with java script?
I am experienced plugin developer but until now all work was in PS SDK and C++.
I have no experience in scripting Photoshop trough java script.
Plugins are Win 32/64 platform that are supported is Windows XP or later.
Thank you in advance.
Regards,
Momir Zecevic

Well, as someone has said, pefs should work, but if not, it is quite easy to figure out the syntax of the .reg files, so why wouldn't you create the one you need and than import it? I think you can add reg keys with
REG ADD [ROOT\]RegKey /v ValueName [/t DataType] [/S Separator] [/d Data] [/f]or
REGEDIT /S pathnamecommands, so call that in an external process (see ProcessBuilder class).

[SOLVED] making GUI look pretty

I know I can just browse through xfce-look and stuff like that
but I want to hear what the community likes... any suggestions for themes, launch bars, or just flat out "neat" stuff... etc... for
gnome .... xfce4 .....kde
Thanks
Last edited by BarefootSoul83 (2009-10-20 15:30:10)

RetroX wrote:
It all depends on the desktop you choose, really.
GNOME is the best all-around desktop.
/ignores flame bait.
just kidding - I know you didn't intend it that way.
KDE is the feature-full desktop with tons of appearance options and tons of features you may or may not want. Performance-wise, it's a lot slower.
as others have said, that's not necessarily the case.
If you have the hard drive space, you can make a separate partition (no more than 15 GiB is needed) and make a separate installation of Arch, where you can mess around with the various desktops. Then, once you decide what you want, install it on the partition you're actually going to be using.
You could do that, but imo it's not really necessary to go to such extremes. You can easily install and remove any desktop/wm on a single installation. If you're really concerned about keeping your testing separate from your active install, creating a separate user should be sufficient. Besides, if you have that extra diskspace to make a new install, you could just leave gnome/kde installed. It's not going to hurt anything to have them sitting there unused.

Importing packages in Servlets

I am just learning Java Servlets, and I am having trouble using classes (that are in a Package) within the servlet. Right now, I have a servlet that uses classes from a package that i created (and I know works). The servlet compiles and when I run it using standard out (basically not making it a servlet), it works. BUT, when I use it on the web, I get errors saying that the class definitions for the classes in my package don't exist. Since it works using standard out, that makes me think i need to configure my web.xml file, but I have no clue where to start with that. Any help would be great! Thanks!

where do you put the class? It can be under WEB-INF/classes like the servlet class or WEB-INF/lib if is a jar.

Adding Help to a GUI

I'm a bit new at making GUI's in java. I need to add a help option in my GUI by having a question mark at the right top corner of the window that once clicked when you hover over certain areas in the GUI it will provide help. does anyone know a good place for me to start looking (it's hard to google for it) or give me some starting code?
Thank you

Do you want one in the title bar? If so forget it. While you can do it, it would be very hard to do. (1)
Having a "help" button somewhere else on the window would be easy.
It could be done by having an action listener changing the mouse cuser on the Window curser, most likely to a custom curser. Then adding mouse listeners to everything that can be "helped". Which consumes the event (so the action listener on buttons is not fired), removes itself from all that it had been added to, and opens the help window for the object picked.
1) To change the title bar requires JNI, or making a Custom L&F, and having that be able to add a "help" button

Is there any one to give my ans??

Are yar tell what is the extra API for making GUI?????

hi,
sorry! this is not the solution to your prblm but a request for your help instead. Actually I
read ur msg n found that u're a bit expert in this technology so plzz help me out in displaying the MIDlet appln which i've developed using RMI and servlets on a WAP/GPRS/JAVA enabled cell phone( Samsung C100).
actually i know that the .jad file can be downloaded on the cell phone directly but how that happens i don't know, plzz help me.
Thanks,
Animesh

Local Application and Web Application

Hello,
I want to develope two applications, one local local and another web application.
Following are the basic requirement.
1. I want to use Applets for makeing GUIs
2. MS-Access as database.
3. As well want share same source code in the both application.
Can anybody guide me best way of doing such applications.
Thank you.
Prashant

That's like calling a restaurant asking:
-Does your servants carry cameras with them?
-What?
-Cameras. Do they take pictures of the cook each time they go into the kitchen?
-No, Sir. I'm dreadfully sorry, but they don't.
-Do you have a camera on you at this moment?
-No.
-Can I take a picture of you?
-Do you want to order a table, Sir?

Problem with jpanel and revalidate()

i have made a calendar. on click on jlabel you can switch month/year and there is the problem. for example when i switch from february to march and back again, then the panel don�t update. but why?
i hope you understand what i mean.(I am german and can�t englisch)
here is the code(i have mixed german in english in the code, i hope you understand even so.)
package organizer.gui;
import organizer.*;
import java.text.SimpleDateFormat;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
public class Kalender extends JPanel {
private Calendar calendar;
private JPanel days;
private JLabel monthLabel;
private SimpleDateFormat monthFormat = new SimpleDateFormat("dd MMM yyyy");
private TerminManager manger;
public Kalender(TerminManager manager) {
   super();
   this.manger=manager;
   this.calendar=Calendar.getInstance();
   this.initializeJPanel();
   this.updatePanel();
protected void updatePanel() {
   monthLabel.setText(monthFormat.format(calendar.getTime()));
   if(days!=null) {
     days.removeAll();
   }else {
     days = new JPanel(new GridLayout(0, 7));
   days.setOpaque(true);
   for (int i = 1; i <=7; i++) {
     int dayInt = ( (i + 1) == 8) ? 1 : i + 1;
     JLabel label = new JLabel();
     label.setHorizontalAlignment(JLabel.CENTER);
     if (dayInt == Calendar.SUNDAY) {
       label.setText("Son");
     else if (dayInt == Calendar.MONDAY) {
       label.setText("Mon");
     else if (dayInt == Calendar.TUESDAY) {
       label.setText("Die");
     else if (dayInt == Calendar.WEDNESDAY) {
       label.setText("Mit");
     else if (dayInt == Calendar.THURSDAY) {
       label.setText("Don");
     else if (dayInt == Calendar.FRIDAY) {
       label.setText("Fre");
     else if (dayInt == Calendar.SATURDAY) {
       label.setText("Sam");
     days.add(label);
   Calendar setupCalendar = (Calendar) calendar.clone();
   setupCalendar.set(Calendar.DAY_OF_MONTH, 1);
   int firstday = setupCalendar.get(Calendar.DAY_OF_WEEK);
   for (int i = 1; i < (firstday - 1); i++) {
     days.add(new JLabel(""));
   for (int i = 1; i <=setupCalendar.getActualMaximum(Calendar.DAY_OF_MONTH); i++) {
     int day = setupCalendar.get(Calendar.DAY_OF_MONTH);
     final Date d = setupCalendar.getTime();
     final JLabel label = new JLabel(String.valueOf(day));
     label.setOpaque(true);
     if(this.manger.isTerminAtDay(d)) {
       String s="<html><center>" + day + "<br>";
       if(this.manger.isBirthdayAtDay(d)) {
         s+="Geburtstag<br>";
       if(this.manger.isOtherTerminAtDay(d)) {
         s+="Termin";
       label.setText(s);
       label.addMouseListener(new MouseListener() {
          * mouseClicked
          * @param e MouseEvent
         public void mouseClicked(MouseEvent e) {
           Termin[] t = Kalender.this.manger.getTermineAtDay(d);
           if (t.length == 1) {
             new TerminDialog(null, t[0]);
           else {
             new TerminAuswahlDialog(null, t, d);
          * mouseEntered
          * @param e MouseEvent
         public void mouseEntered(MouseEvent e) {
          * mouseExited
          * @param e MouseEvent
         public void mouseExited(MouseEvent e) {
          * mousePressed
          * @param e MouseEvent
         public void mousePressed(MouseEvent e) {
          * mouseReleased
          * @param e MouseEvent
         public void mouseReleased(MouseEvent e) {
     final Color background=label.getBackground();
     final Color foreground=label.getForeground();
     label.setHorizontalAlignment(JLabel.CENTER);
     label.addMouseListener(new MouseAdapter() {
       public void mouseEntered(MouseEvent e) {
         label.setBackground(Color.BLUE);
         label.setForeground(Color.RED);
       public void mouseExited(MouseEvent e) {
         label.setBackground(background);
         label.setForeground(foreground);
     days.add(label);
     setupCalendar.roll(Calendar.DAY_OF_MONTH,true);
   this.add(days, BorderLayout.CENTER);
   this.revalidate();
private JLabel createUpdateButton(final int field,final int amount) {
   final JLabel label = new JLabel();
   final Border selectedBorder = new EtchedBorder();
   final Border unselectedBorder = new EmptyBorder(selectedBorder
       .getBorderInsets(new JLabel()));
   label.setBorder(unselectedBorder);
   label.addMouseListener(new MouseAdapter() {
     public void mouseReleased(MouseEvent e) {
       calendar.add(field, amount);
       Kalender.this.updatePanel();
     public void mouseEntered(MouseEvent e) {
       label.setBorder(selectedBorder);
     public void mouseExited(MouseEvent e) {
       label.setBorder(unselectedBorder);
   return label;
private void initializeJPanel() {
   JPanel header = new JPanel();
   JLabel label;
   label = this.createUpdateButton(Calendar.YEAR, -1);
   label.setText("<<");
   header.add(label);
   label = this.createUpdateButton(Calendar.MONTH, -1);
   label.setText("<");
   header.add(label);
   monthLabel=new JLabel("");
   header.add(monthLabel);
   label = this.createUpdateButton(Calendar.MONTH, 1);
   label.setText(">");
   header.add(label);
   label = this.createUpdateButton(Calendar.YEAR, 1);
   label.setText(">>");
   header.add(label);
   this.setLayout(new BorderLayout());
   this.add(header, BorderLayout.NORTH);
}

I got you code to compile and run and made a single change to get it to work; adding a call to repaint at the end of the updatePanel method.
        this.add(days, BorderLayout.CENTER);
        this.revalidate();
        repaint();
    }Whenever you change the size of a containers components or add/remove components you must ask the container to run through its component hierarchy and check the size requirements of all its children and lay them out again, ie, do a new layout. The JComponent method for this isrevalidate. If you are working in the AWT you must use the Component/(overridden in)Container method validate, sometimes preceded by a call to the invalidate method. Some people prefer the validate method over revalidate. These are methods used to update guis by asking for a renewed layout. For economy you can call one (sometimes with invalidate, but rarely) of these methods on the smallest component/container that includes all the containers needing the renewed layout, ie, keep the action as localized as possible.
When the rendering of components has changed, things like colors, borders and text, we need to ask the components to repaint themselves. The easy way to do this is to call repaint on the gui. For economy you can call repaint on the smallest component that contains all the components needing repainting. Some classes like those in the JTextComponent group have their own internal repainting calls so they will repaint themselves when changes are made.
In making guis, especially elaborate ones, it seems to take some playful experimentation to find out what is needed to get what you want. Sometimes it is a call to revalidate, sometimes a call to repaint, sometimes both. You just have to experiment.

Sorting of Date field in the SQL Query useing ORDER BY

Hi
I am facing a problem when I am getting the results of a query from the ORacle 8i database using jdbc connection.
The query is having a date field and I have to sort the query results using ORDER By for the Date field. The query is giving exact results in the SQL PLus interface.
When I am getting this results in the GUI where servlets are being used an Exception is coming as not supported RefreshRow method.
If anyone has faced this problem and have got the solutions please let me know.
thanks
sulfy

That doesn't sound at all like an SQL problem.
More like you trying to do updates on the resultset which is not allowed ...
send a some code (not to much pls :) and we'll be
able to help more
cu
Spieler

9i report services need info. on CGI and RWSERVLET

We are trying to use the reports 9i against forms 6i. I need to info. on how we can differentiate the two types of service(whether it is CGI or rwservlet).
Setup1:
1. Run rwserver -install server=TESTCGI
2. This creates the service and the testcgi.conf file
3. Make the compatibility to 6i in rwservlet.properties
4. In tnsnames specify the host=host1 port=1949
(Is this that all that I need to CGI?)
Setup2:
1. Run rwserver -install server=TESTSERVLET
2. This creates the service and the testservlet.conf file
3. Make the service manual so that it doesn't startup on its own.
4. Make the compatibility to 6i in rwservlet.properties
5. Also specify server_name=TESTSERVLET
6. Now start the service by typing http://host:8888/reports/rwservlet
(This sometimes start the service(I can see an icon) and is this the CGI service that is started by the servlet??. Sometimes it can't start the service giving port binding error. If I start the service TESTSERVLET by going to the services window and type the url http://host:8888/reports/rwservlet/showenv works fine.
I don't get any port bind error.
7. Is this case also do I need a tnsnames entry? If so what should be the port?
8. Is servlet internally calls CGI and is this how it works?
9. Why is that it can't start the service automatically when started using servlet sometimes?
I am little confused about both the architecture..Any help will be appreciated.

See comments in line:
1. Is report server and the listener(the one usually on
port 1949) are different processes altogether?9i Reports Server will start up a proxy server in a separate process, if
<compatible version="6i"/>
is set in server config file <server_name>.conf. The proxy server, which is running in a different process, will listen on the port.
2. If I issue the command, rwserver server=TESTSERVER(I
have no tnsnames entry for this server at this moment
in the tnsnames.ora file in the 9iR2 home) does it
start the report server alone? or the report server and
the listener process? rwserver server=TESTSERVER will start 9i TESTSERVER, but only start the proxy server if <compatible version="6i"/> is set. In the case that <compatible version="6i"/> is set, but no tnsnames entry for this server, the proxy will not be able to start, because it does not no which port to listen to.
3. If the above command starts the listener process by
itself which port does it use? (We had the option to
specify the port in previous releases, but not anymore
I guess. It used to be something like <executable>
port=<portno> in previous releases)Again, the port is defined in tnsnames.ora.
4. I assumed that specifying the entry for the report
server in the tnsnames.ora before starting the server
would start the listener process in the appropriate
port.
a. I made an entry in tnsnames.ora as SUPPORTSERVER
port=1949.
b. I ran the command rwserver server=SUPPORTSERVER
c. Did a netstat -a on the machine. Didn't see any
process listening on port 1949.
So my question is how do we specify the listening port?
where do we specify the listening port? If in
tnsnames.ora why I didn't see any listener process on
1949?Specifying the port in tnsnames.ora itself will not start the proxy server, you will need to uncomment <compatible version="6i"/> in $OH/reports/conf/<server_name>.conf. So make sure this and port number are both set correctly.
5. How do I determine what client Iam using? Is it like
below:
a. If I use only the following url
http://<web_server>.<domain_name>:<port>/<alias>/rwservlet?<parameters>
am I making use of servlet/oc4j? Does this mean servlet
has to be used only as a url?Yes, you are running report using Reports servelt. A servlet in its nature needs to be invoked in a web environment.
b. If I use the following url
http://<web_server>.<domain_name>:<port>/<alias>/rwcgi.exe?<parameters>
am I making use of cgi? Does this mean the cgi has to
be used only as a url?Yes, you are running report using CGI. A cgi program in its nature needs to be invoked in a web environment.
However, you don't have to run them from url. You can have your own program call Reports servlet/cgi, then return the result.
c. If for RUN_REPORT_OBJECT it uses ZRC, am I not using
servlet/oc4j? Since the document says, the servlet is
more stable than CGI, I want to use the servlet/oc4j.
Does this mean I should use only the above url and not
the RUN_REPORT_OBJECT?RUN_REPORT_OBJECT will not go through servlet. You can use show_document call to send request to servlet.
Hope this helps,
-Jeff

Package com.borland.jbcl.layout does not exist

im using JBuilder X and getting this error message:
package com.borland.jbcl.layout does not exist
considering that JBuilder has some problem i compiled the classes using command prompt but even then the same error appeared. plz help me its part of my final project of a courde.
Some ppl in diff forums have said that jbcl has been deprecated but making gui in JBuilder is much easier. and i only know of making frames in XYLayout,,,,,,,
If i dont have the package plz let me know how can i get it and if i have it then tell me how can it get it and where and how to install

Put the jars or classes in the com.borland.jbcl.layout package into your CLASSPATH. You have referenced them in your program, the compiler is looking for them, but it cannot find them, so it cannot compile your program.

Howto call a Javabean function from javascript

Hi,
I want to fill some properties from an object which can be chosen from a selection box. When an object is chosen, I want to fill the propertie fields of the chosen object. How can I do this? Can I call from a 'onChange' a javabean function? or do I have to call a javascript function which calls a javabean function?
Thanks in advance..
Hugo Hendriks

Actually, in a way you can call a bean method from a javascript function. But it's not really the bean method that is called for but the value it should have returned at the server side.
Take a look at this example:
<%@ page language="java"
%>
// list is a Vector containing a collection of "set & get-beans" retrieved through a db query
<jsp:useBean id="list" class="java.util.Vector" scope="request" />
<%
Iterator itr = list.iterator();
MyBean mb = new MyBean();
%>
<head>
<script>
var limit = <%=list.size()%>;
function fillTextArea(theButton){
for(a=0;a<limit;a++){
<%
while(itr.hasNext()){
mb = (MyBean)itr.next();
%>
if(this.name=="bt1")
document.theForm.ta.value += "<%=mb.getValue1()%>";
else
document.theForm.ta.value += "<%=mb.getValue2()%>";
<%
%>
</script>
</head>
<body>
<form name="theForm">
<textarea name="ta" cols="50" rows="20"></textarea>
<br>
<br>
<input type="button" name="bt1" value="click me" onclick="javascript:fillTextArea(this)">
<input type="button" name="bt2" value="...or me" onclick="javascript:fillTextArea(this)">
</form>
</body>
</html>
The result of this will be a javascript function containing code for each element in the vector but that will be accessable in the client side.
Of course this could render in large jsp pages being returned if the list vector is large, but sometimes this could be preferred against making a new servlet request each time.
/Rickard

Filling space with non-visible component?

Is there a better way to fill space to squeeze objects closer together in a gridlayout/flowlayout than simply making gui components and setting their visibility to false?

I thought so too but...
newApplet.java:105: reference to add is ambiguous, both method add(java.awt.PopupMenu) in java.awt.Component and method add(java.awt.Component) in java.awt.Container match
userNamePanel.add(null);

Making GUI in servlet

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