Swing is great !!!!!

Hi guys I've been working in swing for a last 5 years developing a client server and a GUI library. I've been working in coding our java beans (MyJTable, MyPopupDataTextField etc,etc) and our data JDBC beans.
The only thing I could say now is that the library is becoming very productive and that I'm enjoying swing programming !!! I'm sure that all work I have done in swing it would be more difficult implementing in dot net. I really learned a lot watching sun's swing code !!! Really the best GUI toolkit !!! Thanks to all swing team, and people who are in java forums for helping me during these years !!!!
(The only painfull thing was switching from jdk1.3.1 to jdk1.4.2, lot of focus issues).

I am not good at English, but I think swing is awful
bad...I think the Swing developers were given a pretty tough egg to crack and they produced something that is reasonably flexible and gets the job done. Overall I doubt I could have done as good a job given ten times the time to do it. That being said, there is definitely a lot in Swing to learn from through examples of what not to do. Some horrible abuses of concrete inheritance (DefaultTableCellRenderer for example) and other bad code so I wouldn't call it ideal or even the "best".

Similar Messages

When/Why to use Canvas?

Okay, so I'm looking into creating custom components and I know that Canvas class was made to give programmers a class to use solely for drawing. However, you could just use JComponent/Component to creat custom buttons, menu's, etc. So I'm a little confused why we have Canvas and what the best way is to go about making a custom component, graphically.

LavaJava wrote:
Okay, here's another point to bring up since you said don't mix awt and swing. Things like graphics and graphics 2d are under awt but to my knowledge there is no equivalent in swing. This all may seem confusing at first, but the more you play with it, the more you read on it, the more it will make sense. Morgalr and Darryl are as usual right on the money. As they state, Swing is built on top of AWT, however they are very different in how they display components. While AWT uses the native OS to render its buttons, panels and other widgets, Swing renders these things internally, all except the root container such as the JFrame (I believe). This gives Swing much greater flexibility in how it displays these things and how you can change and control them. Because of these differences though, it is generally not safe to display Swing widgets together with AWT widgets. There are as always exceptions, but you have to have a darn good reason to claim an exception (you don't), and have to have the smarts to be able to mingle the AWT and Swing widgets together (I don't).
Also, for some odd reason, JFrame is in swing package but it's hierarchy is under awt. In fact, that very fact about JFrame has give me problems when trying to do keybindings on a JFrame.Then don't do key bindings on the JFrame. Do it instead on one of the JComponents it holds. You do know that even the contentPane is at its heart a JComponent (though this needs to be casted if you want to use it directly).
Good luck,
Pete

JTable Focus and InputVerifier nightmares

I have been wrestling with JTable in 1.3 and 1.4, specifically its focus management and InputVerifiers.
I have searched all over to find out why there is abnormal behavior in the focus manager, while overriding, setting properties to terminate a cell being edited, etc.
I found ways to get the cell editors to provide InputVerifier support, though there are still quirks in some instances where the InputVerifier is not consulted.
So to the Swing team, great job so far really...but the JTable really needs a LOT of work and bug votes don't make up for a non-releasable product.
Sincerely,
Jeremy Hanna

Thanks qussev,
that looks promising but I cannot find more than a picture (no code) where the focus is outside the selection. Does anybody know how this can be done?

Drag N Drop in JTables

Hi !
I have two scenarios
1) I need to be able to drag and drop rows from a given table to the other table.
2) I should be able to drag and drop rows with in the same table( This case is same as rearranging the rows with in the table with the help of MouseDragged Event).
Is this possible using Drag N Drop in swing? Greatly appreciate solutions and online resources which can help me write my custom TransferHandler for the above purposes

Ok, here's the promised source code
When the Class is initialized you need to create a couple of objects
          DragSource dragSource = DragSource.getDefaultDragSource() ;
          dragSource.createDefaultDragGestureRecognizer(this, DnDConstants.ACTION_COPY_OR_MOVE, this) ;And you will need the following method
     public void dragGestureRecognized(DragGestureEvent e) {
          String v = (String) getSelectedValue() ;
          e.startDrag(DragSource.DefaultCopyDrop, new StringSelection(v), this) ;
     }or a variation on it. You will of course need the imports and such to support these, but most of it is in the java.awt.dnd package.
Then in your target you'll need a method to catch the drop ...
     public void drop(DropTargetDropEvent e){
          try{
               DataFlavor stringFlavor = DataFlavor.stringFlavor ;
               Transferable tr = e.getTransferable() ;
               if(e.isDataFlavorSupported(stringFlavor)){
                    String name = (String) tr.getTransferData(stringFlavor) ;
                    e.acceptDrop(DnDConstants.ACTION_COPY_OR_MOVE) ;
                    Point p = e.getLocation() ;
                    int x = Integer.parseInt(String.valueOf(Math.round(p.getX()))) ;
                    int y = Integer.parseInt(String.valueOf(Math.round(p.getY()))) ;
                    int i = lastScenarioIndex++ ;
                    addDrawingObject(
                         new ScenarioDrawingObject("SCENARIO_" + i, "SCENARIO_" + i, y, x,
                         new SequenceMemberDrawingObject(name, name, 20, 20))) ;
                    resizeContainer() ;
          catch(IOException ioe){
               ioe.printStackTrace() ;
          catch(UnsupportedFlavorException ufe){
               ufe.printStackTrace() ;
     }There's a little more to it, but that's the crux of it.
Cheers.

The great swing dilema

Hello all,
I have a question which I consider to be the key to swing development:
WHAT is the difference between setSize, setPrefferedSize, setBounds,
setMinimumSize, setMaximumSize.
Which of these methods is deprecated and which is not?
Which of them should be used and when?
Are they depending on layout manager used?
I used them all. Sometimes some of them work, sometimes not.
I REALLY WANT to understand the base of swing.
I hope this will be an interesting thread.

Are they depending on layout manager used?Yes, so check out this section from the Swing tutorial on "Using Layout Managers" and start playing with the different Layout Manager to see what happens:
http://java.sun.com/docs/books/tutorial/uiswing/layout/using.html
A couple of observations I've made from my 'limited' experiences:
1) setBounds is only used when you are not using a Layout Manager (called Absolute Positioning)
2) I've only ever used setSize() when writing my own Layout Manager
3) Most components set their own preferredSize() so you don't need to do anything. I sometimes override the preferredSize of components.
4) I have never used max and min sizes.

How to get the values from a html form embedded in a swing container

Hi all,
I am developing an application in which i have to read a html file and display it in a swing container.That task i made it with the help of a tool.But now i want to get the values from that page.ie when the submit button is clicked all the values of that form should be retrived by a servlet/standalone application.I don't know how to proceed further.Any help in this regard will be very greatful
Thanks in advance,
Prakash

By parsing the HTML.

PL/SQL and Java Swing interface

Everybody in this forum knows that Oracle is the best database around
with many functionalities, stability, performance, etc. We also know
that PL/SQL is a great language to manipulate information directly
in the database with many built in functions, OOP capability,
transaction control, among other features. Today an application that
manipulates information, which needs user interface, requires components
to be developed using different technologies and normally running in
different servers or machines. For example, the interface is done using
a dynamic HTML generator like JSP, PHP, PL/SQL Web Toolkit, etc.
This page is executed in an application server like Oracle iAS or
Tomcat, just to name two, which in turn access a database like Oracle to
build the HTML. Also rich clients like Java applets require an intermediate
server to access the database (through servlets for example) although
it is possible to access the database directly but with security issues.
Another problem with this is that complexity increases a lot, many
technologies, skills and places to maintain code which leads to a greater
failure probability. Also, an application is constantly evolving, new
calculations are added, new tables, changed columns. If you have an
application with product code for example and you need to increase its
size, you need to change it in the database, search for all occurrences
of it in the middle-tier code and perhaps adjust interfaces. Normally
there is no direct dependency among the tier components. On another
issue, many application interfaces today are based on HTML which doesn't
have interactive capabilities like rich-client interfaces. Although it
is possible to simulate many GUI widgets with JavaScript and DHTML, it is
far from the interactive level we can accomplish in rich clients like
Java Swing, Flash MX, Win32, etc. HTML is also a "tag-based" language
originally created to publish documents so even small pages require
many bytes to be transmitted, far beyond of what we see on the screen.
Even in fast networks you have a delay time to wait the page to be
loaded. Another issue, the database is in general the central location
for all kinds of data. Most applications relies on it for security,
transaction and availability. My proposal is to use Oracle as the
central location for interface, processing and data. With this approach
we can create not only the data manipulation procedures in the database,
but procedures that also control and manage user interfaces. Having
a Oracle database as the central location for all components has many
advantages:
- Unique point of maintenance, backup and restore
- Integrated database security
- One language for everything, PL/SQL or Java (even both if desired)
- Inherited database cache, transaction and processing optimizations
- Direct access to the database dictionary
- Application runs on Oracle which has support for many platforms.
- Transparent use of parallel processing, clusters and future
background technologies
Regarding the interface, I already created a Java applet renderer
which receives instructions from the database on how to create GUI
objects and how to respond to events. The applet is only 8kb and can
render any Swing or AWT object/event. The communication is done
through HTTP or HTTPS using Oracles's MOD_PLSQL included in the Apache
HTTP server which comes with the database or application server (iAS).
I am also creating a database framework and APIs in PL/SQL to
create and manipulate the client interface. The applet startup is
very fast because it is very small, you don't need to download large
classes with the client interface. Execution is done "on-demand"
according to instructions received from the database. The instructions
are very optimized in terms of network bandwidth and based on preliminary
tests it can be up to 1/10 of a similar HTML screen. Less network usage
means faster response and means that even low speed connections will
have a good performance (a future development can be to use this in
wireless devices like PDAs e even cell phones, just an idea for now).
The applet can also be executed standalone by using Java Web Start.
With this approach no business code, except the interface, is executed
on the client. This means that alterations in the application are
dynamically reflected in the client, no need to "re-download" the
application. Events are transmitted when required only so network
usage is minimized. It is also possible to establish triggering
events to further reduce network usage. Since the protocol used is
HTTP (which is stateless), the database framework I am creating will
be responsible to maintain the state of connections, variables, locks
and session information, so the developer don't need to worry about it.
The framework will have many layers, from communication up to
application so there will be pre-built functions to handle queries,
pagination, lock, mail, log, etc. The final objective is to have a
rich client application integrated into the database with minimum
programming and maintenance requirements, not forgetting customization
capabilities. Below is a very small example of what can de done. A
desktop with two windows, each window with two fields, a button with an
image to switch the values, and events to convert the typed text when
leaving the field or double-clicking it. The "leave" event also has an
optimization to only be triggered when the text changes. I am still
developing the framework and adjusting the renderer but I think that all
technical barriers were transposed by now. The framework is still in
the early stages, my guess is that only 5% is done so far. As a future
development even an IDE can be created so we have a graphical environment
do develop applications. I am willing to share this with the PL/SQL
community and listen to ideas and comments.
Example:
create or replace procedure demo1 (
jre_version in varchar2 := '1.4.2_01',
debug_info in varchar2 := 'false',
compress_buffer in varchar2 := 'false',
optimize_buffer in varchar2 := 'true'
) as
begin
interface.initialize('demo1_init','JGR Demo 1',jre_version,debug_info,compress_buffer,optimize_buffer);
end;
create or replace procedure demo1_init as
begin
toolkit.initialize;
toolkit.create_icon('icon',interface.global_root_url||'img/switch.gif');
toolkit.create_internal_frame('frame1','Frame 1',50,50,300,136);
toolkit.create_label('frame1label1','frame1',10,10,50,20,'Field 1');
toolkit.create_label('frame1label2','frame1',10,40,50,20,'Field 2');
toolkit.create_text_field('frame1field1','frame1',50,10,230,20,'Field 1','Field 1',focus_event=>true,mouse_event=>true);
toolkit.create_text_field('frame1field2','frame1',50,40,230,20,'Field 2','Field 2',focus_event=>true,mouse_event=>true);
toolkit.set_text_field_event('frame1field1',toolkit.focus_lost_event,'demo1_set_upper',toolkit.get_text_method,'FIELD 1','false');
toolkit.set_text_field_event('frame1field2',toolkit.focus_lost_event,'demo1_set_upper',toolkit.get_text_method,'FIELD 2','false');
toolkit.set_text_field_event('frame1field1',toolkit.mouse_double_clicked_event,'demo1_set_lower',toolkit.get_text_method,'field 1','false');
toolkit.set_text_field_event('frame1field2',toolkit.mouse_double_clicked_event,'demo1_set_lower',toolkit.get_text_method,'field 2','false');
toolkit.create_button('button1','frame1',10,70,100,25,'Switch','Switch the values of "Field 1" and "Field 2"','S','icon');
toolkit.set_button_event('button1',toolkit.action_performed_event,'demo1_switch_fields(''frame1field1'',''frame1field2'')','frame1field1:'||toolkit.get_text_method||',frame1field2:'||toolkit.get_text_method);
toolkit.create_internal_frame('frame2','Frame 2',100,100,300,136);
toolkit.create_label('frame2label1','frame2',10,10,50,20,'Field 1');
toolkit.create_label('frame2label2','frame2',10,40,50,20,'Field 2');
toolkit.create_text_field('frame2field1','frame2',50,10,230,20,'Field 1','Field 1',focus_event=>true,mouse_event=>true);
toolkit.create_text_field('frame2field2','frame2',50,40,230,20,'Field 2','Field 2',focus_event=>true,mouse_event=>true);
toolkit.set_text_field_event('frame2field1',toolkit.focus_lost_event,'demo1_set_upper',toolkit.get_text_method,'FIELD 1','false');
toolkit.set_text_field_event('frame2field2',toolkit.focus_lost_event,'demo1_set_upper',toolkit.get_text_method,'FIELD 2','false');
toolkit.set_text_field_event('frame2field1',toolkit.mouse_double_clicked_event,'demo1_set_lower',toolkit.get_text_method,'field 1','false');
toolkit.set_text_field_event('frame2field2',toolkit.mouse_double_clicked_event,'demo1_set_lower',toolkit.get_text_method,'field 2','false');
toolkit.create_button('button2','frame2',10,70,100,25,'Switch','Switch the values of "Field 1" and "Field 2"','S','icon');
toolkit.set_button_event('button2',toolkit.action_performed_event,'demo1_switch_fields(''frame2field1'',''frame2field2'')','frame2field1:'||toolkit.get_text_method||',frame2field2:'||toolkit.get_text_method);
end;
create or replace procedure demo1_set_upper as
begin
toolkit.set_string_method(interface.global_object_name,toolkit.set_text_method,upper(interface.array_event_value(1)));
toolkit.set_text_field_event(interface.global_object_name,toolkit.focus_lost_event,'demo1_set_upper',toolkit.get_text_method,upper(interface.array_event_value(1)),'false');
end;
create or replace procedure demo1_set_lower as
begin
toolkit.set_string_method(interface.global_object_name,toolkit.set_text_method,lower(interface.array_event_value(1)));
toolkit.set_text_field_event(interface.global_object_name,toolkit.mouse_double_clicked_event,'demo1_set_lower',toolkit.get_text_method,lower(interface.array_event_value(1)),'false');
end;
create or replace procedure demo1_switch_fields (
field1 in varchar2,
field2 in varchar2
) as
begin
toolkit.set_string_method(field1,toolkit.set_text_method,interface.array_event_value(2));
toolkit.set_string_method(field2,toolkit.set_text_method,interface.array_event_value(1));
toolkit.set_text_field_event(field1,toolkit.focus_lost_event,'demo1_set_upper',toolkit.get_text_method,upper(interface.array_event_value(2)),'false');
toolkit.set_text_field_event(field2,toolkit.focus_lost_event,'demo1_set_upper',toolkit.get_text_method,upper(interface.array_event_value(1)),'false');
toolkit.set_text_field_event(field1,toolkit.mouse_double_clicked_event,'demo1_set_lower',toolkit.get_text_method,lower(interface.array_event_value(2)),'false');
toolkit.set_text_field_event(field2,toolkit.mouse_double_clicked_event,'demo1_set_lower',toolkit.get_text_method,lower(interface.array_event_value(1)),'false');
end;

Is it sound like Oracle Portal?
But you want to save a layer 9iAS.
Basically, that was the WebDB.(Oracle changed the name to Portal when version 3.0)
Over all, I agree with you.
>>Having a Oracle database as the central location for all components has many
>>advantages:
>>
>>- Unique point of maintenance, backup and restore
>>- Integrated database security
>>- One language for everything, PL/SQL or Java (even both if desired)
>>- Inherited database cache, transaction and processing optimizations
>>- Direct access to the database dictionary
>>- Application runs on Oracle which has support for many platforms.
>>- Transparent use of parallel processing, clusters and future
>>background technologies
I would like to build 'ZOPE' inside Oracle DB as a back-end
Using Flash MX as front-end.
Thomas Ku.

Swing and Active rendering problem

Hopefully this is the right place to post. I have a problem with active rendering and swing. Basically my code below messes up when I start rendering the swing either using repaint() or paint(g).
If I use repaint() then the gui flickers like mad and if I use paint(g) then I get deadlocks when typing into the textbox.
Any help would be great for what am I doing wrong. How do I solve this problem?
public GuiWindow() {
          try {
               guiImage = ImageIO.read(this.getClass().getResource("Images/Gui2.png"));
          } catch (Exception e) {}
          this.setPreferredSize(new Dimension(800, 600));
          this.setUndecorated(true);
          this.setIgnoreRepaint(true);
          this.setResizable(false);
          this.addKeyListener(kl);
          this.setFocusable(true);
          this.requestFocus();
          this.setTitle("PWO");
          JPanel panel = new JPanel()
          public void paintComponent(Graphics g)
          //Scale image to size of component
               super.paintComponent(g);
               Dimension d = getSize();
               g.drawImage(guiImage, 0, 0, d.width, d.height, null);
               this.setIgnoreRepaint(true);
                        //draw background for the gui
          JTextField Name = new JTextField(20);
          panel.add(Name);
          this.setContentPane(panel);
                myRenderingLoop();
public void myRenderingLoop() {
          int fps = 20;
          long startTime;
          int frameDelay = 1000 / fps;
          this.createBufferStrategy(2);
          BufferStrategy myStrategy = this.getBufferStrategy();
          Graphics2D g;
          while (!done) {
               startTime = System.currentTimeMillis();
               do {
                    do {
                         g = (Graphics2D)myStrategy.getDrawGraphics();
                         this.repaint();
                         this.render(g); //render the game
                         g.dispose();
                    } while (myStrategy.contentsRestored());
                    myStrategy.show();
                    Toolkit.getDefaultToolkit().sync();
               } while (myStrategy.contentsLost());
               while (System.currentTimeMillis() - startTime < frameDelay) {
                    try {
                         Thread.sleep(15);
                    } catch (InterruptedException ex){}
     }Edited by: Aammbi on Apr 6, 2008 7:05 PM

I really have no idea what your code is trying to do, but a few comments.
1) There is no need to use a BufferStrategy since Swing is double buffered automatically
2) Don't use a while loop with a Thread.sleep(). Chances are the GUI EDT is sleeping which makes the GUI unresponsive
3) Use a Swing Timer for animation.
If you need further help then you need to create a [Short, Self Contained, Compilable and Executable, Example Program (SSCCE)|http://homepage1.nifty.com/algafield/sscce.html], that demonstrates the incorrect behaviour.

Swing and jmf

can u please have a look to the attached file
i know that this involves the jmf API but I have the feeling that has to do more with swing, thats whay I post my question here
this simple application is based on the MDI.java example of the jmf web
pages
I also added a slider and want to set the playback rate for the player from
there if possible
that is I want everytime that I move the slider and the value is biggerthan
50 the rate to be reduced according to a simple calculation that converts
the slider value to a value between 0 an1 for the rate...
so all i want to do is pass the slider value to the player everytime that
the slider changes value and this is bigger than 50
the attached file can do that only when the player starts playing the
file,,,,
after the player has started and the rate is set I cant change it even if
the slider moves
when I tried to do that from within the stateChanged method of the slider I
was getting a Nullpointer exception because of the EventDispatching thread,
so I thought to take this piece of code out of there (create the setnewrate
method in the jmframe instead),,,,but then of course doesnt work like I
would want,,,,,
do I have to register the class that implements the frame for the player as
a ChangeListener on the slider to achieve that, is something like that
possible....
I know that swing is not supposed to be thread safe, so maybe this is what
the problem is after all...any suggestions to that direction?
Can u please have a look??
I am a beginner so any help would really be very much appreciated
thanx :)
maria
.....and the attached file
I think the problem is with the stateChanged method for the Jslider...
I am getting a null pointerexception because of the eventdispatching thread
pls ignore any silly mistakes I am a completely newbie in java
myAppfr2.java
import javax.media.*;
import com.sun.media.ui.*;
import javax.media.protocol.*;
import javax.media.protocol.DataSource;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
import java.util.Vector;
import javax.swing.border.Border.*;
import java.util.Hashtable;
public class myAppfr2 extends Frame {
* VARIABLES
JMFrame jmframe = null;
JDesktopPane desktop;
FileDialog fd = null;
CheckboxMenuItem cbAutoLoop = null;
Player player ;
//Player newPlayer = null;
String filename;
boolean stopped;
public my_slider test_slider;//put it here so I can use it by name by all code
float rate;
* MAIN PROGRAM / STATIC METHODS
public static void main(String args[]) {
//if (args.length > 0)
     //rate=Float.parseFloat(args[0]);
myAppfr2 mdi = new myAppfr2();
static void Fatal(String s) {
MessageBox mb = new MessageBox("JMF Error", s);
* METHODS
public myAppfr2() {
super("VHE Demo");
// Add the desktop pane
setLayout( new BorderLayout() );
desktop = new JDesktopPane();
desktop.setDoubleBuffered(true);
     desktop.setDragMode(JDesktopPane.OUTLINE_DRAG_MODE);//makes dragging faster
add("Center", desktop);
setMenuBar(createMenuBar());
setSize(640, 480);
setVisible(true);
     test_slider = new my_slider("networkutil");
     createnetworkutil();
     try {
     UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel") ;
} catch (Exception e) {
System.err.println("Could not initialize personal look and feel");
addWindowListener( new WindowAdapter() {
public void windowClosing(WindowEvent we) {
System.exit(0);
Manager.setHint(Manager.LIGHTWEIGHT_RENDERER, new Boolean(true));
private MenuBar createMenuBar() {
ActionListener al = new ActionListener() {
public void actionPerformed(ActionEvent ae) {
String command = ae.getActionCommand();
if (command.equals("Open")) {
if (fd == null) {
fd = new FileDialog(myAppfr2.this, "Open File",
FileDialog.LOAD);
fd.setDirectory("~/movies");
fd.show();
if (fd.getFile() != null) {
String filename = fd.getDirectory() + fd.getFile();
openFile("file:" + filename);
} else if (command.equals("Exit")) {
dispose();
System.exit(0);
MenuItem item;
MenuBar mb = new MenuBar();
// File Menu
Menu mnFile = new Menu("File");
mnFile.add(item = new MenuItem("Open"));
item.addActionListener(al);
mnFile.add(item = new MenuItem("Exit"));
item.addActionListener(al);
// Options Menu
Menu mnOptions = new Menu("Options");
cbAutoLoop = new CheckboxMenuItem("Auto replay");
cbAutoLoop.setState(true);
mnOptions.add(cbAutoLoop);
mb.add(mnFile);
mb.add(mnOptions);
return mb;
//create slider and add it to desktop
public void createnetworkutil(){
test_slider.pack();
desktop.add(test_slider);
test_slider.setVisible(true);
* Open a media file.
private void openFile(String filename) {
String mediaFile = filename;
Player player = null;
// URL for our media file
URL url = null;
try {
// Create an url from the file name and the url to the
// document containing this applet.
if ((url = new URL(mediaFile)) == null) {
Fatal("Can't build URL for " + mediaFile);
return;
// Create an instance of a player for this media
try {
player = Manager.createPlayer(url);
} catch (NoPlayerException e) {
Fatal("Error: " + e);
} catch (MalformedURLException e) {
Fatal("Error:" + e);
} catch (IOException e) {
Fatal("Error:" + e);
if (player != null) {
this.filename = filename;
JMFrame jmframe = new JMFrame(player, filename);
desktop.add(jmframe);
class JMFrame extends JInternalFrame implements ControllerListener {
public Player mplayer;
Component visual = null;
Component control = null;
int videoWidth = 0;
int videoHeight = 0;
int controlHeight = 30;
int insetWidth = 10;
int insetHeight = 30;
// boolean firstTime = true;
public JMFrame(Player player, String title) {
super(title, true, true, true, true);
getContentPane().setLayout( new BorderLayout() );
//setSize(320, 10);
setLocation(200, 25);
setVisible(true);
mplayer = player;
mplayer.addControllerListener((ControllerListener) this);
mplayer.realize();
addInternalFrameListener( new InternalFrameAdapter() {
public void internalFrameClosing(InternalFrameEvent ife) {
mplayer.close();
public void controllerUpdate(ControllerEvent ce) {
// System.out.println("controllerUpdate");
//SwingUtilities.isEventDispatchThread();
if (ce instanceof RealizeCompleteEvent) {
mplayer.prefetch();
} else if (ce instanceof PrefetchCompleteEvent) {
if (visual != null)
return;
     //setnewrate();
     //rate=mplayer.getRate();
     System.out.println( mplayer.getRate());
if ((visual = mplayer.getVisualComponent()) != null) {
Dimension size = visual.getPreferredSize();
videoWidth = size.width;
videoHeight = size.height;
getContentPane().add("Center", visual);
} else
videoWidth = 320;
/*if ((control = mplayer.getControlPanelComponent()) != null) {
controlHeight = control.getPreferredSize().height;
getContentPane().add("South", control);
setSize(videoWidth + insetWidth,
videoHeight + controlHeight + insetHeight);
validate();
mplayer.start();
} else if (ce instanceof StartEvent){
     if (test_slider.netutil==0) {
     mplayer.stop();
     } else if (ce instanceof EndOfMediaEvent && cbAutoLoop.getState()) {
mplayer.setMediaTime(new Time(0));
          boolean stopped=true;
          mplayer.prefetch();
          mplayer.start();
          stopped=false;
class my_slider extends JInternalFrame implements ChangeListener{
//Set up parameters.
int netini=50;
public int netutil=netini;
public my_slider(String windowTitle) {
super(windowTitle, false, false, false, false);
getContentPane().setLayout(new BorderLayout());
setLocation(25,25);// for the internal frame that contains the slider
setVisible(true); //..same
//Create the slider(the component included in "my_slider" internal frame
     JSlider mslider = new JSlider(JSlider.VERTICAL,
0, 100, netini);
mslider.addChangeListener((ChangeListener) this);
mslider.setMajorTickSpacing(10);
mslider.setPaintTicks(true);
//Create the label table.
Hashtable labelTable = new Hashtable();
labelTable.put(new Integer( 0 ),
new JLabel("0%") );
labelTable.put(new Integer( 25 ),
new JLabel("25%") );
labelTable.put(new Integer( 50 ),
new JLabel("50%") );
labelTable.put(new Integer(75),
new JLabel("75%") );
     labelTable.put(new Integer( 100),
new JLabel("100%") );
mslider.setLabelTable(labelTable);
mslider.setPaintLabels(true);
mslider.setBorder(
BorderFactory.createEmptyBorder(0,0,0,10));
     //Put everything in the content pane.
getContentPane().add(mslider, BorderLayout.CENTER);
public void stateChanged(ChangeEvent e) { //System.out.println("stateChanged");
// SwingUtilities.isEventDispatchThread();
if (e instanceof ChangeEvent){
JSlider source = (JSlider)e.getSource();
if (!source.getValueIsAdjusting()) {
netutil= (int)source.getValue();
     System.out.println(netutil);
          if (jmframe.mplayer!=null) {
     jmframe.mplayer.setRate((float)(netutil/(netutil+(0.3*netutil))));
          if (jmframe.mplayer.getTargetState() <Player.Started)
     jmframe.mplayer.prefetch();
i am stuck so any help would be really very much appreciated

did you ever resolve this.
I may be having similar problems
I have an JMF application running under webstart. It runs ok in Java 1.3
Now I am trying to get ti to run under Java 1.4. The attached error is rather useless,
but by guess at what is happening is that the JMF control has some .awt. stuff included
but that Java 1.4 emulates .awt. in swing. But something was not set and the default does not
work.
This error messages does not appear in the 1.3 run
Any suggestions would be greatly appriatated.
1.4 result:
mg version 2.1.1a
player created com.sun.media.content.unknown.Handler@3a1834
ctr com.sun.media.PlaybackEngine$BitRateA@4a9a7d
ctr com.sun.media.BasicJMD[panel0,0,0,512x200,invalid,layout=java.awt.BorderLayout]
duration? javax.media.Time@6b5666 sec = 9.223372036854776E9
time unknown javax.media.Time@754699
will realize the player
realize
javax.media.TransitionEvent[source=com.sun.media.content.unknown.
Handler@3a1834,previous=Unrealized,current=Realizing,
target=Realized]
start smxBADS
bass start
Exception occurred during event dispatching:
java.lang.NullPointerException
at javax.swing.plaf.metal.MetalLookAndFeel.getControlInfo(Unknown Source)
at javax.swing.plaf.metal.MetalScrollButton.paint(Unknown Source)
at javax.swing.JComponent.paintChildren(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintWithBuffer(Unknown Source)
at javax.swing.JComponent._paintImmediately(Unknown Source)
at javax.swing.JComponent.paintImmediately(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Exception occurred during event dispatching:
java.lang.NullPointerException
at javax.swing.plaf.metal.MetalLookAndFeel.getControlInfo(Unknown Source)
at javax.swing.plaf.metal.MetalScrollButton.paint(Unknown Source)
at javax.swing.JComponent.paintChildren(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintWithBuffer(Unknown Source)
at javax.swing.JComponent._paintImmediately(Unknown Source)
at javax.swing.JComponent.paintImmediately(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
realize done
panel found java.awt.Panel[panel1,0,0,0x0,invalid] java.awt.Panel[panel2,4,216,292x30,layout=java.awt.FlowLayout]
press a button
Exception occurred during event dispatching:
java.lang.NullPointerException
at javax.swing.plaf.metal.MetalLookAndFeel.getControlInfo(Unknown Source)
at javax.swing.plaf.metal.MetalScrollButton.paint(Unknown Source)
at javax.swing.JComponent.paintChildren(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintWithBuffer(Unknown Source)
at javax.swing.JComponent._paintImmediately(Unknown Source)
at javax.swing.JComponent.paintImmediately(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Exception occurred during event dispatching:
java.lang.NullPointerException
1.3 result
mg version 2.1.1a
player created com.sun.media.content.unknown.Handler@354749
ctr com.sun.media.PlaybackEngine$BitRateA@5b484d
ctr com.sun.media.BasicJMD[panel3,0,0,512x200,invalid,layout=java.awt.BorderLayout]
duration? javax.media.Time@46d228 sec = 9.223372036854776E9
time unknown javax.media.Time@f7386
will realize the player
realize
javax.media.TransitionEvent[source=com.sun.media.content.unknown.
Handler@354749,previous=Unrealized,current=Realizing,
target=Realized]
start smxBADS
bass start
javax.media.DurationUpdateEvent[source=com.sun.media.content.unknown.Handler@354749,duration=javax.media.Time@55c0f9
javax.media.Time@55c0f9
javax.media.RealizeCompleteEvent[source=com.sun.media.content.unknown.Handler@354749,previous=Realizing,current=Realized,target=Realized]
realized complete
prefetch
realize done
controlComp com.sun.media.ui.DefaultControlPanel[,0,0,74x21,invalid,layout=java.awt.BorderLayout]
add controlComp 21 java.awt.Panel[panel4,10,-12,258x47,invalid]
javax.media.TransitionEvent[source=com.sun.media.content.unknown.Handler@354749,previous=Realized,current=Prefetching,target=Prefetched]
start smxBADS
bass start
running ok from here on

Problem with Double Buffering and Swing

Hi
I made a game and basically it works pretty well, my only problem is it flickers really badly right now. I read up on a whole lot of forums about double buffering and none of those methods seemed to work. Then I noticed that Swing has double buffering built in so I tried that but then I get compilation errors and I'm really not sure why. My original code was a console application and worked perfectly, then I ported it into a JApplet and it still works but it flickers and thats what I'm tryign to fix now.
The code below is in my main class under the constructor.
Heres the double buffering code I'm trying to use, I'm sure you all seen it before lol
public void update(Graphics g)
          // initialize buffer
          if (dbImage == null)
               dbImage = createImage(this.getSize().width, this.getSize().height);
               dbg = dbImage.getGraphics();
          // clear screen in background
          dbg.setColor(getBackground());
          dbg.fillRect(0, 0, this.getSize().width, this.getSize().height);
          // draw elements in background
          dbg.setColor(getForeground());
          paint(dbg);
          // draw image on the screen
          g.drawImage(dbImage, 0, 0, this);
     }My paint is right under neath and heres how it looks
This snipet of code works but when I change the method to
public paintComponent(Graphics g){
super.paintComponent(g)...
everythign stops working and get a compilation error and says that it can't find paintComponent in javax.swing.JFrame.
public void paint(Graphics g)
          super.paint(g);
          //if game starting display menue
          if (show_menue)
               //to restart lives if player dies
               lives = 3;
               menue.draw_menue(g);
               menue_ufo1.draw_shape(g);
               menue_ufo2.shape_color = Color.DARK_GRAY;
               menue_ufo2.draw_shape(g);
               menue_ufo3.shape_color = Color.BLUE;
               menue_ufo3.draw_shape(g);
               menue_ufo4.shape_color = new Color(82, 157, 22);
               menue_ufo4.draw_shape(g);
               menue_ufo5.draw_shape(g);
               menue_ufo6.shape_color = new Color(130, 3, 3); ;
               menue_ufo6.draw_shape(g);
               menue_turret.draw_ship(g);
               menue_ammo.draw_ammo(g);
          else
               //otherwise redraw game objects
               gunner.draw_ship(g);
               y_ammo.draw_ammo(g);
               grass.draw_bar(g);
               o_ufo.draw_shape(g);
               b_ufo.draw_shape(g);
               m_ufo.draw_shape(g);
               s_ufo.draw_shape(g);
               z_ufo.draw_shape(g);
               xx_ufo.draw_shape(g);
               info.draw_bar(g);
               live_painter.draw_lives(g, lives);
               score_painter.draw_score(g, score);
               level_display.draw_level(g, level);
               explosion.draw_boom(g);
     }I just want to get rid of the flickering for now so any help will be greatly appreciated. Depending which will be simpler I can either try to double buffer this program or port it all to swing but I'm not sure which elements are effected by AWT and which by Swing. Also I read some of the Java documentation but couldn't really understand how to implement it to fix my program.
Thanks in advance
Sebastian

This is a simple animation example quickly thrown together. I have two classes, an animation panel which is a JPanel subclass that overrides paintComponent and draws the animation, and a JApplet subclass that simply holds the animation panel in the applet's contentpane:
SimpleAnimationPanel.java
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.JPanel;
import javax.swing.Timer;
class SimpleAnimationPanel extends JPanel
    private static final int DELAY = 20;
    public static final int X_TRANSLATION = 2;
    public static final int Y_TRANSLATION = 2;
    private Point point = new Point(5, 32);
    private BufferedImage duke = null;
    private Timer timer = new Timer(DELAY, new TimerAction());
    public SimpleAnimationPanel()
        try
            // borrow an image from sun.com
            duke = ImageIO.read(new URL(
                    "http://java.sun.com/products/plugin/images/duke.wave.med.gif"));
        catch (MalformedURLException e)
            e.printStackTrace();
        catch (IOException e)
            e.printStackTrace();
        setPreferredSize(new Dimension(600, 400));
        timer.start();
    // do our drawing here in the paintComponent override
    @Override
    protected void paintComponent(Graphics g)
        super.paintComponent(g);
        if (duke != null)
            g.drawImage(duke, point.x, point.y, this);
    private class TimerAction implements ActionListener
        @Override
        public void actionPerformed(ActionEvent e)
            int x = point.x;
            int y = point.y;
            Dimension size = SimpleAnimationPanel.this.getSize();
            if (x > size.width)
                x = 0;
            else
                x += X_TRANSLATION;
            if (y > size.height)
                y = 0;
            else
                y += Y_TRANSLATION;
            point.setLocation(new Point(x, y)); // update the point
            SimpleAnimationPanel.this.repaint();
}AnimationApplet.java
import java.lang.reflect.InvocationTargetException;
import javax.swing.JApplet;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class AnimationApplet extends JApplet
    public void init()
        try
            SwingUtilities.invokeAndWait(new Runnable()
                public void run()
                    // construct the panel
                    JPanel simpleAnimation = new SimpleAnimationPanel();
                    // put it in the contentPane of the JApplet
                    getContentPane().add(simpleAnimation);
                    setSize(simpleAnimation.getPreferredSize());
        catch (InterruptedException e)
            e.printStackTrace();
        catch (InvocationTargetException e)
            e.printStackTrace();
}Here's a 3rd bonus class that shows how to put the JPanel into a stand-alone program, a JFrame. It's very similar to doing it in the JApplet:
AnimationFrame.java
import javax.swing.JFrame;
public class AnimationFrame
    private static void createAndShowUI()
        JFrame frame = new JFrame("SimpleAnimationPanel");
        frame.getContentPane().add(new SimpleAnimationPanel());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    public static void main(String[] args)
        java.awt.EventQueue.invokeLater(new Runnable()
            public void run()
                createAndShowUI();
}Edited by: Encephalopathic on Mar 15, 2008 11:01 PM

Problem in Opening HTML Page in Internet Explorer from my Swing Application

Hi,
I am opening a HTML file in Internet Explorer from my swing application.I am using the code given below
private final static String WIN_FLAG = "url.dll,FileProtocolHandler";
private final static String WIN_PATH = "rundll32";
String cmd = WIN_PATH + " " + WIN_FLAG + " " + url;
// url is HTML file Path
Process p = Runtime.getRuntime().exec( cmd );
Here there are two things i need to address ...
1)The HTML file is opening up,but it always opens behind the swing application,that makes me every time to maximize the HTML file after it being opened up.I want to open it in front of the Swing Application.I need to implement "Always On Top" functionality for the html page.
2)Whenever i trigger action to open different HTML page,it opens in new Internet Explorer window.
I need to open it in same IE window.
how to solve out these problems ??? any help would be greatly appreciated .Thanks in advance.
- Manikandan

any idea about this ????

Certificate support in Java Swing application

Hi There,
I am new to this Certificate thing and running into issues! Would appreciate for all the help and please ignore for any stupid questions.
Here is my scenario.
1. I do have a client server application and client is a java swing application which connects to a Server application (Using Jetty 4.2.22 as embedded server)
2. Initially, it had a self signed certificate but goal is to support third party certificate (i.e import in the server and then show warning to the client during login)
If somebody has already done this or point me to some example (using Jetty APIs) that would be great help. If not, here is what I am trying to do and some questions.
1. I tried to get some free SSL certificate from the web and imported into the server's KeyStore.
If I do a list from the server using Keystore, this is what it looks like
keytool -list -keystore /tmp/keystore -storepass genview
Keystore type: JKS
Keystore provider: SUN
Your keystore contains 2 entries
self, Dec 3, 2008, PrivateKeyEntry,
Certificate fingerprint (MD5): 0D:58:E8:77:89:09:F8:2B:37:64:37:D5:03:AD:C9:0B
rapid, Jan 6, 2009, trustedCertEntry,
Certificate fingerprint (MD5): 64:9C:EF:2E:44:FC:C6:8F:52:07:D0:51:73:8F:CB:3
QUESTION 1 : why the third party certificate's entry as "trustedCertEntry"? Is it always like this? Do I need to have only one certificate at a time? (If so, just remove the self signed and have 3rd party one)
My Jetty server comes up but when I connect from Client Swing App, the "getServerCertificates()" method only returns one entry i.e self signed one but not the third party one.
I am using like this
URL url = new URL("https://127.0.0.1:port");
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
conn.connect();
Certificate[] certs = conn.getServerCertificates();
Is not this API supposed to return all the server's certificate?
Please guide me or instruct me what to do.
Thanks,
CRB

Crossposted and answered.

I can't figure out the Keynote title option. I'm a newbie so forgive my ignorance. I want to put an image in the swing arm, but I can't figure it out.

I even tried opening in Motion and inserting it there, but when I bring it back to fc it's not there. I also want to change the background to an image or at least solid white. When I put an image in the Dropzone it doesn't show up. Any help would be GREATLY appreciated!

To change the title background to use a clip in the drop zone, do just as Jim said.
Also, place the clip that want to appear in the "swing arm" right below the title in the timeline.

JNLP - Swing application compiled in jdk1.5 not working in jdk1.6

I have one swing application, compiled in jdk 1.5 and deployed in JNLP with jdk 1.5. When client machine try to access the application and having jre 1.5 then it works fine. but if client machine having jre 1.6 or version greater than 1.5 then application does not work properly.
Please help me, i got stuck and not able to solve the problem.
this is my JNLP
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="http://10.1.1.145:8080/uttimesheet" href="launch.jnlp">
<information>
<title>TimeSheet Portal</title>
<vendor>Geometric Global</vendor>
<description>A simple java desktop application based on Swing Application Framework</description>
<description kind="short">TimeSheet Portal</description>
<homepage href="http://appframework.dev.java.net"/>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.5+" />
<jar href="UTTimeSheet.jar" main="true" download="eager"/>
<jar href="lib/antlr-2.7.5H3.jar" download="eager"/>
<jar href="lib/appframework-1.0.3.jar" download="eager"/>
<jar href="lib/asm.jar" download="eager"/>
<jar href="lib/cglib-2.1.jar" download="eager"/>
<jar href="lib/commons-collections-2.1.1.jar" download="eager"/>
<jar href="lib/commons-logging-1.0.4.jar" download="eager"/>
<jar href="lib/dom4j-1.6.jar" download="eager"/>
<jar href="lib/hibernate3.jar" download="eager"/>
<jar href="lib/jta.jar" download="eager"/>
<jar href="lib/log4j-1.2.9.jar" download="eager"/>
<jar href="lib/poi-3.0.2.jar" download="eager"/>
<jar href="lib/postgresql-8.3-603.jdbc3.jar" download="eager"/>
<jar href="lib/swing-layout-1.0.3.jar" download="eager"/>
<jar href="lib/swing-worker-1.1.jar" download="eager"/>
<jar href="lib/swingx-0.9.2.jar" download="eager"/>
</resources>
<application-desc main-class="timesheetproject.TimeSheetProjectApp">
</application-desc>
</jnlp>
Thanks in Advance.

Thanks Luca for your time,
we have deployed application in tomcat and changed the home page of tomcat to our application home page(html page). and url is http://10.1.1.145:8080/
Application home page contain link to jnlp. so whenever user click on link (in home page) then jnlp will execute and launch the swing application.
do you need some more clarification?
below is the home page(html).
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Launch TimeSheet Portal via JNLP</title>
</head>
<body>
     <center>
          <br>
          <img src="images/Geo-logo.JPG" />
          <br>
          <hr width="70%" />
          <br>
          <table width="70%">
               <tr><td> </td></tr>
               <tr>
                    <td colspan="2" align="center">
                         <align="center">
                              <h2>Welcome to TimeSheet Portal.</h3>
                         </align>
                    </td>
               </tr>
               <tr><td> </td></tr>
               <tr><td> </td></tr>
               <tr>
                    <td align="center">
                         <align="center">
                              <h3><u>Live Sites:</u></h3>
                         </align>
                    </td>
                    <td align="center">
                         <align="center">
                              <h3><u>Demo Sites:</u></h3>
                         </align>
                    </td>
               </tr>
               <tr>
                    <td width="50%" align="center">
                         <img src="images/launchPortal.png" onmouseover="this.src='images/launchPortalMouseOver.png';" onmouseout="this.src='images/launchPortal.png';" border="0"/>
                         <br><br>
                         <img src="images/launchAdminPortal.png" onmouseover="this.src='images/launchAdminPortalMouseOver.png';" onmouseout="this.src='images/launchAdminPortal.png';" border="0"/>
                    </td>
                    <td width="50%" align="center">
                         <img src="images/demoPortal.png" onmouseover="this.src='images/demoPortalMouseOver.png';" onmouseout="this.src='images/demoPortal.png';" border="0"/>
                         <br><br>
                         <img src="images/demoAdminPortal.png" onmouseover="this.src='images/demoAdminPortalMouseOver.png';" onmouseout="this.src='images/demoAdminPortal.png';" border="0"/>
                    </td>
               </tr>
               <tr><td> </td></tr>
               <tr><td> </td></tr>
     </table>
     <table width="70%">
          <tr><td> </td></tr>
          <tr><td> </td></tr>
          <tr><td align="center">
               FAQ   |
               Help   |
               Why Timesheet   |
               Report a bug   |
               Contact Us   |
Subtask Mapping
          </td></tr>
     </table>
     <br><br><br><br>
     <table width="70%" bgcolor="#C0C0C0" style="vertical-align: bottom">
          <tr>
               <td colspan="2" align="center" style="vertical-align: bottom" bgcolor="#C0C0C0">
                    ©<font size="1.5" face="Verdana"> 2008 Geometric Ltd. All rights reserved.<br>
                         Best optimized for a resolution of 1024 and above. JRE 1.5 is a pre-requisite                          for using these applications.
                    </font>
               </td>
          </tr>
     </table>
     </center>
</body>
</html>
Thanks.

Please help: RMI and Swing/AWT issue

Hi guys, I've been having a lot of trouble trying to get a GUI application to work with RMI. I'd appreciate any help. Here's the story:
I wrote a Java application and its GUI using Netbeans. In a nutshell, the application is about performing searches. I am now at the point where I need exterior programs to use my application's search capabilities, thus needing RMI. Such exterior programs are to call methods currently implemented in my application.
I implemented RMI, and got the client --> server communication working. However, the GUI just breaks. It starts outputting exceptions, gets delayed, doesn't update properly, some parts of it stop working.... basically hysterical behavior.
Now take a look at this line within my server class:
Naming.rebind("SearchProgram", mySearchProgram);
If I take it out, RMI obviously does not work... but the application and its GUI work flawlessly. If I put it in, the RMI calls work, but the GUI's above symptoms occur again. Among the symptoms are null pointer exceptions which all look similar, are related to "AWT-EventQueue-0", and keep ocurring. Here's just snippet of the errors outputted:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at javax.swing.plaf.metal.MetalScrollBarUI.getPreferredSize(MetalScrollBarUI.java:102)
at javax.swing.JComponent.getPreferredSize(JComponent.java:1615)
at javax.swing.JScrollBar.getMinimumSize(JScrollBar.java:704)
at javax.swing.ScrollPaneLayout.minimumLayoutSize(ScrollPaneLayout.java:624)
at java.awt.Container.minimumSize(Container.java:1598)
at java.awt.Container.getMinimumSize(Container.java:1583)
at javax.swing.JComponent.getMinimumSize(JComponent.java:1697)
at java.awt.BorderLayout.minimumLayoutSize(BorderLayout.java:634)
at java.awt.Container.minimumSize(Container.java:1598)
at java.awt.Container.getMinimumSize(Container.java:1583)
at javax.swing.JComponent.getMinimumSize(JComponent.java:1697)
at java.awt.BorderLayout.minimumLayoutSize(BorderLayout.java:634)
at java.awt.Container.minimumSize(Container.java:1598)
at java.awt.Container.getMinimumSize(Container.java:1583)
at javax.swing.JComponent.getMinimumSize(JComponent.java:1697)
at javax.swing.BoxLayout.checkRequests(BoxLayout.java:433)
at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:375)
at java.awt.Container.layout(Container.java:1401)
at java.awt.Container.doLayout(Container.java:1390)
at java.awt.Container.validateTree(Container.java:1473)
at java.awt.Container.validateTree(Container.java:1480)
at java.awt.Container.validateTree(Container.java:1480)
at java.awt.Container.validateTree(Container.java:1480)
at java.awt.Container.validateTree(Container.java:1480)
at java.awt.Container.validate(Container.java:1448)
at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:379)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:113)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at javax.swing.plaf.basic.BasicMenuItemUI.getPreferredMenuItemSize(BasicMenuItemUI.java:400)
at javax.swing.plaf.basic.BasicMenuItemUI.getPreferredSize(BasicMenuItemUI.java:310)
at javax.swing.JComponent.getPreferredSize(JComponent.java:1615)
at javax.swing.BoxLayout.checkRequests(BoxLayout.java:434)
at javax.swing.BoxLayout.preferredLayoutSize(BoxLayout.java:251)
at javax.swing.plaf.basic.DefaultMenuLayout.preferredLayoutSize(DefaultMenuLayout.java:38)
at java.awt.Container.preferredSize(Container.java:1558)
at java.awt.Container.getPreferredSize(Container.java:1543)
at javax.swing.JComponent.getPreferredSize(JComponent.java:1617)
at javax.swing.JRootPane$RootLayout.layoutContainer(JRootPane.java:910)
at java.awt.Container.layout(Container.java:1401)
at java.awt.Container.doLayout(Container.java:1390)
at java.awt.Container.validateTree(Container.java:1473)
at java.awt.Container.validate(Container.java:1448)
at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:379)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:113)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
There are no complaints about anything within my code, it's all GUI related whenever I make a bind() or rebind() call.
Again, any help here would be great... cause this one's just beating me.
Thanks!

Maybe you want to change that worker thread to
not do RMI but anything else (dummy data) to see if it really is RMI, I doubt it, I think you are updating some structures that have to do with swing GUI and hence you will hang.
Just check this out.

Swing is great !!!!!

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