Problems JDialog
i have a JDialog but the problem is that its getting resized when it is running and moreover i want the dialog box to come right in the center of the screen any ways
this is the piece of code which make the dialog appear
d2.setSize(500,500);
d2.setVisible(true);
d2.setLocationRelativeTo(null);
d2.setResizable(false);
Don't do
d2.setSize(500,500);
d2.setVisible(true);
d2.setLocationRelativeTo(null);
d2.setResizable(false);Do
d2.setSize(500,500);
d2.setLocationRelativeTo(null);
d2.setResizable(false);
d2.setVisible(true);You have to setVisible(true) last.
Similar Messages
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Problem with jDialog in a JFrame
Hello to everyone...i'm newby java GUI developer, and i've got a problem with a JDialog within a JFrame...
I made a JFrame which creates a new customized JDialog in his contructor, like this:
MioJdialog dlg = new MioJdialog(this, true);
dlg.setVisible(true);
...The "MioJdialog" class store his JFrame parent under a private attribute, in this way:
class MioJdialog {...
private Frame parent;
public MioJdialog (Frame parent, boolean modal){
this.parent=parent;
....}and here's the problem: when i try to close the parent JFrame with a command like this:
parent.dispose();
( in order to close the whole window), sometimes happens that the JFrame is still visible on the screen...and i don't know why...
got some hints?
thanks to everyone!
Edited by: akyra on Jan 14, 2008 4:36 AM
Edited by: akyra on Jan 14, 2008 4:37 AM
Edited by: akyra on Jan 14, 2008 4:37 AMIf you need further help then you need to create a "Short, Self Contained, Compilable and Executable, Example Program (SSCCE)", that demonstrates the incorrect behaviour.
http://homepage1.nifty.com/algafield/sscce.html
Don't forget to use the "Code Formatting Tags", so the posted code retains its original formatting.
http://forum.java.sun.com/help.jspa?sec=formatting -
Problem with JDialogs and Threads
Hi. I'm new to this forum and I hope I'm not asking a repeat question. I didn't find what I needed after a quick search of existing topics.
I have this problem with creating a new JDialog from within a thread. I have a class which extends JDialog and within it I'm running a thread which calls up another JDialog. My problem is that the JDialog created by the Thread does not seem to function. Everything is unclickable except for the buttons in the titlebar. Is there something that I'm missing out on?yeah, bad idea, don't do that.
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Hi All,
I have a problem with JDialogs in my standalone application. This app pops-up multiple JDialogs, say a stack of JDialogs.
I have a standalone application which runs as a JFrame, call it JFrame1, which is working fine. JFrame1 pops-up a JDialog, on some button click on JFrame1, call it JDialog1, which is also working fine. Now JDialog1 pops-up another JDialog, again on some button click on JDialog1, call it JDialog2, which is too working fine. But, after I finish with JDialog2 and dispose it my JDialog1 is not working fine, though that is the front dialog at present.
Any ideas why JDialog1 is not working fine? Am I missing anything?
Thanks,
Srinivas.Hi,
I have a component called DateComponent that works similar to a JComboBox. When you click a small button of DateComponent, it pops-up a Calendar similar to the drop down list of JComboBox and user can pick a date from it. It gets closed when it loses focus.
I have this DateComponent on JFrame1, JDialog1 and JDialog2. The Calendar is not being diaplayed on JDialog1 upon clicking the small button of DateComponent after JDialog2 is disposed. But it is being diaplayed properly on JDialog1 before JDialog1 opens JDialog2. What could be wrong?
I am using JDK1.3.1.
Thanks,
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Problem with refreshing JFrames and JDialogs
My program is based on few JDialogs and one JFrame. I'm still changing them, one time one of the JDialogs is visible, other time JFrame. During this change I call dispose() for one window or frame and I create (if it wasn't created before) other component and call setVisible(true) for it. Problem is that sometimes (only sometimes! like 5% of calls) my windows appears but they are not refreshing (not showing new objects added to their lists or sth like that) until I resize my window by dragging mouse on the edge of it. Is there anyway to ensure that window will be displayed properly?
I ran into this problem about a year ago...so I don't really remember but I think a call to validate(), or paint() or repaint() or something like that should do the trick (forgive me for not knowing the exact one but as I said it has been a while). Its been about that year since I stopped coding in java and moved to c#. You want the window to redraw its self what ever that is.
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Problem with a template method in JDialog
Hi friends,
I'm experiencing a problem with JDialog. I have a base abstract class ChooseLocationDialog<E> to let a client choose a location for database. This is an abstract class with two abstract methods:
protected abstract E prepareLocation();
protected abstract JPanel prepareForm();Method prepareForm is used in the constructor of ChooseLocationDialog to get a JPanel and add it to content pane.
Method prepareLocation is used to prepare location of a database. I have to options - local file and networking.
There are two subclasses ChooseRemoteLocationDialog and ChooseLocalFileDialog.
When I start a local version, ChooseLocalFileDialog with one input field for local file, everything works fine and my local client version starts execution.
The problem arises when I start a network version of my client. Dialog appears and I can enter host and port into the input fields. But when I click Select, I get NullPointerException. During debugging I noticed that the values I entered into these fields ("localhost" for host and "10999" for port) were not set for corresponding JTextFields and when my code executes getText() method for these input fields it returns empty strings. This happens only for one of these dialogs - for the ChooseRemoteLocationDialog.
The code for ChooseLocationDialog class:
public abstract class ChooseLocationDialog<E> extends JDialog {
private E databaseLocation;
private static final long serialVersionUID = -1630416811077468527L;
public ChooseLocationDialog() {
setTitle("Choose database location");
setAlwaysOnTop(true);
setModal(true);
Container container = getContentPane();
JPanel mainPanel = new JPanel();
//retrieving a form of a concrete implementation
JPanel formPanel = prepareForm();
mainPanel.add(formPanel, BorderLayout.CENTER);
JPanel buttonPanel = new JPanel(new GridLayout(1, 2));
JButton okButton = new JButton(new SelectLocationAction());
JButton cancelButton = new JButton(new CancelSelectAction());
buttonPanel.add(okButton);
buttonPanel.add(cancelButton);
mainPanel.add(buttonPanel, BorderLayout.SOUTH);
container.add(mainPanel);
pack();
Toolkit toolkit = Toolkit.getDefaultToolkit();
Dimension screenSize = toolkit.getScreenSize();
int x = (screenSize.width - getWidth()) / 2;
int y = (screenSize.height - getHeight()) / 2;
setLocation(x, y);
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
super.windowClosing(e);
System.exit(0);
public E getDatabaseLocation() {
return databaseLocation;
protected abstract E prepareLocation();
protected abstract JPanel prepareForm();
* Action for selecting location.
* @author spyboost
private class SelectLocationAction extends AbstractAction {
private static final long serialVersionUID = 6242940810223013690L;
public SelectLocationAction() {
putValue(Action.NAME, "Select");
@Override
public void actionPerformed(ActionEvent e) {
databaseLocation = prepareLocation();
setVisible(false);
private class CancelSelectAction extends AbstractAction {
private static final long serialVersionUID = -1025433106273231228L;
public CancelSelectAction() {
putValue(Action.NAME, "Cancel");
@Override
public void actionPerformed(ActionEvent e) {
System.exit(0);
}Code for ChooseLocalFileDialog
public class ChooseLocalFileDialog extends ChooseLocationDialog<String> {
private JTextField fileTextField;
private static final long serialVersionUID = 2232230394481975840L;
@Override
protected JPanel prepareForm() {
JPanel panel = new JPanel();
panel.add(new JLabel("File"));
fileTextField = new JTextField(15);
panel.add(fileTextField);
return panel;
@Override
protected String prepareLocation() {
String location = fileTextField.getText();
return location;
}Code for ChooseRemoteLocationDialog
public class ChooseRemoteLocationDialog extends
ChooseLocationDialog<RemoteLocation> {
private JTextField hostField;
private JTextField portField;
private static final long serialVersionUID = -2282249521568378092L;
@Override
protected JPanel prepareForm() {
JPanel panel = new JPanel(new GridLayout(2, 2));
panel.add(new JLabel("Host"));
hostField = new JTextField(15);
panel.add(hostField);
panel.add(new JLabel("Port"));
portField = new JTextField(15);
panel.add(portField);
return panel;
@Override
protected RemoteLocation prepareLocation() {
String host = hostField.getText();
int port = 0;
try {
String portText = portField.getText();
port = Integer.getInteger(portText);
} catch (NumberFormatException e) {
e.printStackTrace();
RemoteLocation location = new RemoteLocation(host, port);
return location;
}Code for RemoteLocation:
public class RemoteLocation {
private String host;
private int port;
public RemoteLocation() {
super();
public RemoteLocation(String host, int port) {
super();
this.host = host;
this.port = port;
public String getHost() {
return host;
public void setHost(String host) {
this.host = host;
public int getPort() {
return port;
public void setPort(int port) {
this.port = port;
}Code snippet for dialog usage in local client implementation:
final ChooseLocationDialog<String> dialog = new ChooseLocalFileDialog();
dialog.setVisible(true);
location = dialog.getDatabaseLocation();
String filePath = location;Code snippet for dialog usage in network client implementation:
final ChooseLocationDialog<RemoteLocation> dialog = new ChooseRemoteLocationDialog();
dialog.setVisible(true);
RemoteLocation location = dialog.getDatabaseLocation();Exception that I'm getting:
Exception occurred during event dispatching:
java.lang.NullPointerException
at suncertify.client.gui.dialog.ChooseRemoteLocationDialog.prepareLocation(ChooseRemoteLocationDialog.java:42)
at suncertify.client.gui.dialog.ChooseRemoteLocationDialog.prepareLocation(ChooseRemoteLocationDialog.java:1)
at suncertify.client.gui.dialog.ChooseLocationDialog$SelectLocationAction.actionPerformed(ChooseLocationDialog.java:87)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
at java.awt.Component.processMouseEvent(Component.java:6134)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
at java.awt.Component.processEvent(Component.java:5899)
at java.awt.Container.processEvent(Container.java:2023)
at java.awt.Component.dispatchEventImpl(Component.java:4501)
at java.awt.Container.dispatchEventImpl(Container.java:2081)
at java.awt.Component.dispatchEvent(Component.java:4331)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4301)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3965)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3895)
at java.awt.Container.dispatchEventImpl(Container.java:2067)
at java.awt.Window.dispatchEventImpl(Window.java:2458)
at java.awt.Component.dispatchEvent(Component.java:4331)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178)
at java.awt.Dialog$1.run(Dialog.java:1046)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)java version "1.6.0"
OpenJDK Runtime Environment (build 1.6.0-b09)
OpenJDK Client VM (build 1.6.0-b09, mixed mode, sharing)
OS: Ubuntu 8.04
Appreciate any help.
Thanks.
Edited by: spyboost on Jul 24, 2008 5:38 PMWhat a silly error! I have to call Integer.parseInt instead of getInt. Integer.getInt tries to find a system property. A small misprint, but a huge amount of time to debug. I always use parseInt method and couldn't even notice that silly misprint. Sometimes it's useful to see the trees instead of whole forest :)
It works perfectly. Sorry for disturbing. -
Problem when a JPanel with a JDialog regains focus
I've a simple application with a JFrame and a nested JDialog under MS Windows. When it regains focus (i.e. another application like MSWord was active and with Alt+Tab or with a mouse-click in taskbar I force my application to gain focus), the JDialog becomes active but I can't see the JPanel because between the dialog and the panel there is MSWord. In z-order I've get the dialog at top, under it MSWord and the panel at background. That's not the regular behavior, but sometimes it happens. Any idea to avoid always this behavior?
Thanks in advance.Any solutions to this problem???
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Problem resizing the JDialog???
hi,
I have a JDialog to which I am adding a JTable and JButton to search.
Based on search condition the table gets populated.
Problem here is
I give search condition 1 and puplate the table after that I resize the JDialog
Now i again serach it.Now the JDialog's size goes to the previous thing it does'nt take the resized size.
in the end of my seacrh action listner I am doing
this.pack();
this.setVisible(true);
this.setResizable(true);While running in debug mode I noticed once it execute this.pack();
the resizing is gone.but if I remove this.pack() the JTable is not shown...
Any idea about this problem??
thnx
neelThe pack() method lays it out according to the preferred size of the content.
You need to either only pack it when you first create it, or note the actual size before packing and if it's non-null and non-zero then restore it after packing. -
Swing problem: table is not refreshed when i open it from jdialog
Hi , my situation is this one :
1. i have a swing form.
2. i have created a panel form where i have a drop down list and a table. wich are depndend with each other. When i choose an item to the drop down list the value in the table is changed.
3. i invoke this panel into the form with drag and drop, with invoke jDialog from button option.
4. First time i run the form and open the panel from button the drop down list and the table are working correctly.
5. i close the panel and open it again: And at this time when i choose an item from drop down list the table is not refreshed anymore. I have to run the form again if i want that this panel to work correctly.
Am i doing smth wrong? I dont have too much experience in swing , and the documentation for adf-swign are really poor .
Ps: Maybe i should explain the way i have created the drop down list and table in the panel . i am not using smth like execute with parameters for the view in the table. I have created a link between the view in the drop down list and the view in the table. It seems they work correcly if i run the panel for the first time.
Thanks in advance !To answer your question, Restore the iPhone with current iTunes on your computer. If fixed, it was software. If still problem, most likely hardware, and then make Genius reservation or set up Service and take or send to Apple for resolution under Warranty.
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When we create JDialog inside Thread's run() method it is creating problem
I have application that has feature that mainframe will be locked after three minutes and the time when it is locked it will show other locked dialog.
Now my problem is given below:
I have created one Dialog inside Threads run() method and this thread will execute when mainframe is locked.So what is happening is when mainframe is locked internally Thread is doing its job (its job is to display one dialog) and it is displaying dialog but mainframe is locked and still it is showing that dialog.This should not happen in our application when mainframe is locked nothing should come outside.
simple code sample is given below:
SwingUtilities.invokeLater(new Runnable()
JDailog dlg = new JDialog();
dlg.pack();
dlg.show();
Now when my applications mainframe is locked and thread is doing its job when mainframe is locked and it will show one dialog when its run() method will execute and it showing dialog even though mainframe is locked.This is major issue for me.please help me.
sample code may contain compile errror but this only to give understanding what i am doing actually i cant show my original code.
But show me some work around for this problem.Why dialog is coming outside when mainframe is locked?
Please help me.I cant use delay inside run() method because of performance.
Is there any way to control this behaviour?public class BackGroundThread extends javax.swing.JFrame implements BackgroundTaskInf {
boolean isMainWindowActive = false;
/** Creates new form BackGroundThread */
public BackGroundThread() {
initComponents();
new DBBackgroudProcess(this).start();
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
// <editor-fold defaultstate="collapsed" desc=" Generated Code ">
private void initComponents() {
jDialog1 = new javax.swing.JDialog();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jLabel1.setText("JOB DONE");
javax.swing.GroupLayout jDialog1Layout = new javax.swing.GroupLayout(jDialog1.getContentPane());
jDialog1.getContentPane().setLayout(jDialog1Layout);
jDialog1Layout.setHorizontalGroup(
jDialog1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jDialog1Layout.createSequentialGroup()
.addGap(95, 95, 95)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 65, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(240, Short.MAX_VALUE))
jDialog1Layout.setVerticalGroup(
jDialog1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jDialog1Layout.createSequentialGroup()
.addGap(22, 22, 22)
.addComponent(jLabel1)
.addContainerGap(22, Short.MAX_VALUE))
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel2.setText("Background work in progess");
jButton1.setText("unlock");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(56, 56, 56)
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 218, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(126, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(263, Short.MAX_VALUE)
.addComponent(jButton1)
.addGap(74, 74, 74))
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(40, 40, 40)
.addComponent(jLabel2)
.addGap(37, 37, 37)
.addComponent(jButton1)
.addContainerGap(43, Short.MAX_VALUE))
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
isMainWindowActive = true;
backgroundTaskFinished();
* @param args the command line arguments
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new BackGroundThread().setVisible(true);
public void backgroundTaskFinished(){
if(isMainWindowActive) {
jDialog1.setSize(200,200);
jDialog1.setVisible(true);
jLabel2.setText("Task is finished");
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JDialog jDialog1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
// End of variables declaration
class DBBackgroudProcess extends Thread {
BackgroundTaskInf infObj;
public DBBackgroudProcess(BackgroundTaskInf infObj){
this.infObj = infObj;
public void run(){
try{
// here you can do your backgroudn task
System.out.println("In BackGroud task");
Thread.sleep(1000);
System.out.println("task completed");
infObj.backgroundTaskFinished();
}catch(Exception e){
e.printStackTrace();
interface BackgroundTaskInf{
public void backgroundTaskFinished();
} -
First of all, just let me say I have read everything there is available on layout managers and how pack() and validate() work.
My problem is simply that my JDialog appears far longer than its components, and I can't see why.
I've created screenshots of the desired appearance and the actual appearance:
http://www.komododave.co.uk/gallery/main.php?g2_itemId=167
The first 'undesired' screenshot shows what the JDialog looks like upon instantiation. The second shows what it looks like once you manually shrink it in the Y direction by more than about 10 pixels.
I don't understand how the maximum size can exceed the Dimension I set with 'dialog.setMaximumSize(...', since I'm using BoxLayout for the JDialog and that respects a given maximum size.
The constructor creating the JDialog is shown here:
public AbstractSelectionDialog(Vector<String> argVector, String title,
String message) {
Vector<String> vector = argVector;
// create new modal JDialog
final JDialog dialog = new JDialog(Silk.getFrame(), title, true);
// set boxlayout for dialog frame
dialog.getContentPane().setLayout(new BoxLayout(dialog.getContentPane(),
BoxLayout.Y_AXIS));
// set default close operation
dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
// create ButtonGroup to enforce exclusive collection choice
final ButtonGroup buttonGroup = new ButtonGroup();
// initialise other components
// use fake space for label rather than use another HorizontalGlue
JLabel label = new JLabel(" " + message);
// panel containing collection selection
JPanel selectionPanel = new JPanel();
// run initialiser methods
JPanel buttonPanel = (JPanel) createButtons(buttonGroup, dialog);
AbstractButton selection[] = createSelection(vector, buttonGroup,
selectionPanel);
// scrollPane containing collection panel
JScrollPane scrollPane = new JScrollPane(selectionPanel,
JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
// panel containing scroll pane
JPanel scrollPanel = new JPanel();
scrollPanel.setLayout(new BoxLayout(scrollPanel, BoxLayout.X_AXIS));
selectionPanel.setLayout(new GridLayout(vector.size(), 1));
// assemble component structure
scrollPanel.add(Box.createHorizontalGlue());
scrollPanel.add(scrollPane);
scrollPanel.add(Box.createHorizontalGlue());
dialog.add(label);
dialog.add(scrollPanel);
dialog.add(buttonPanel);
// set all components to be left-justified
label.setAlignmentX(0.0F);
scrollPanel.setAlignmentX(0.0F);
selectionPanel.setAlignmentX(0.0F);
buttonPanel.setAlignmentX(0.0F);
// set higher-level component sizes
Silk.setSizeAttributes(label, 300, 30, true);
selectionPanel.setMaximumSize(new Dimension(250, 400));
scrollPane.setMinimumSize(new Dimension(250, 50));
scrollPane.setMaximumSize(new Dimension(250, 400));
dialog.setMinimumSize(new Dimension(300, 200));
dialog.setMaximumSize(new Dimension(300, 500));
dialog.pack();
// set components to be opaque
label.setOpaque(true);
scrollPane.setOpaque(true);
selectionPanel.setOpaque(true);
// display dialog frame
//dialog.setResizable(false);
dialog.setVisible(true);
}The 'createButtons' method it uses is here:
public JPanel createButtons(ButtonGroup bg, JDialog jd) {
final ButtonGroup buttonGroup = bg;
final JDialog dialog = jd;
// confirmation buttons
JButton okBtn = new JButton();
JButton cancelBtn = new JButton();
JButton newBtn = new JButton();
// panel containing OK and CANCEL buttons
JPanel bothPanel = new JPanel();
// panel containing NEW COLLECTION button
JPanel newPanel = new JPanel();
// panel to contain all other button panels
JPanel confPanel = new JPanel();
confPanel.setLayout(new BoxLayout(confPanel, BoxLayout.X_AXIS));
newPanel.setLayout(new BoxLayout(newPanel, BoxLayout.X_AXIS));
bothPanel.setLayout(new BoxLayout(bothPanel, BoxLayout.Y_AXIS));
// definition of button Actions
okBtn.setAction(new AbstractAction() {
public void actionPerformed(ActionEvent ae) {
Actions.addScript(buttonGroup.getSelection()
.getActionCommand(), null);
dialog.dispose();
cancelBtn.setAction(new AbstractAction() {
public void actionPerformed(ActionEvent ae) {
dialog.dispose();
newBtn.setAction(new AbstractAction() {
public void actionPerformed(ActionEvent ae) {
dialog.dispose();
new Actions.NewCollectionAction().actionPerformed(ae);
new Actions.NewScriptAction().actionPerformed(ae);
// override action-set button text
okBtn.setText("Ok");
cancelBtn.setText("Cancel");
newBtn.setText("Add New Collection");
// set button sizes
Silk.setSizeAttributes(okBtn, 115, 30, true);
Silk.setSizeAttributes(cancelBtn, 115, 30, true);
Silk.setSizeAttributes(newBtn, 250, 35, true);
// set opaque buttons
confPanel.setOpaque(true);
okBtn.setOpaque(true);
cancelBtn.setOpaque(true);
// assemble components
confPanel.add(Box.createHorizontalGlue());
confPanel.add(okBtn);
confPanel.add(Box.createRigidArea(new Dimension(20, 0)));
confPanel.add(cancelBtn);
confPanel.add(Box.createHorizontalGlue());
newPanel.add(Box.createHorizontalGlue());
newPanel.add(newBtn);
newPanel.add(Box.createHorizontalGlue());
bothPanel.add(Box.createRigidArea(new Dimension(0, 10)));
bothPanel.add(confPanel);
bothPanel.add(Box.createRigidArea(new Dimension(0, 5)));
bothPanel.add(newPanel);
bothPanel.add(Box.createRigidArea(new Dimension(0, 10)));
bothPanel.setMaximumSize(new Dimension(300, 100));
return bothPanel;
}And the createSelection() method it uses is defined here:
public AbstractButton[] createSelection(Vector<String> argVector,
ButtonGroup buttonGroup, JPanel selectionPanel) {
Vector<String> vector = argVector;
JRadioButton selection[] = new JRadioButton[vector.size()];
for (int i = 0; i < vector.size(); i++)
selection[i] = new JRadioButton(vector.get(i));
AbstractButton current;
for (byte i = 0; i < selection.length; i++) {
current = selection;
// set action command string to later identify button that's
// selected
current.setActionCommand(vector.get(i));
// fix button's size
Silk.setSizeAttributes(current, 250, 30, true);
// set button's colour
current.setBackground(Color.WHITE);
// add button to buttongroup
buttonGroup.add(current);
// add button to appropriate JPanel
selectionPanel.add(current);
// ensure one button is selected to prevent pressing OK with no
// selection
selection[0].setSelected(true);
return selection;
Please help if you can.
Thank you.
- DaveYeah sorry camickr, I need to get into the habit of posting SSCCEs.
Here it is in SSCCE form:
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import javax.swing.AbstractAction;
import javax.swing.AbstractButton;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import java.util.Vector;
public class Testing {
// prevent instantiation
private Testing() {
public interface SelectionDialog {
// produces a component containing all dialog buttons
public Component createButtons(ButtonGroup bg, JDialog jd);
// produces an array of the selection buttons to be used
public abstract AbstractButton[] createSelection(
Vector<String> selectionVector, ButtonGroup buttonGroup,
JPanel selectionPanel);
abstract static class AbstractSelectionDialog implements SelectionDialog {
public AbstractSelectionDialog() {
Vector<String> vector = new Vector<String>();
String title = "Broken dialog box";
String message = "Why is the maximum size exceedable, hmm?";
/* for sscce */
vector.add("choice 1");
vector.add("choice 2");
vector.add("choice 3");
vector.add("choice 4");
vector.add("choice 5");
vector.add("choice 6");
vector.add("choice 7");
vector.add("choice 8");
vector.add("choice 9");
vector.add("choice 10");
vector.add("choice 11");
vector.add("choice 12");
vector.add("choice 13");
vector.add("choice 14");
vector.add("choice 15");
vector.add("choice 16");
vector.add("choice 17");
vector.add("choice 18");
// create new modal JDialog
final JDialog dialog = new JDialog(Silk.getFrame(), title, true);
// set boxlayout for dialog frame
dialog.getContentPane().setLayout(new BoxLayout(dialog.getContentPane(),
BoxLayout.Y_AXIS));
// set default close operation
dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
// create ButtonGroup to enforce exclusive collection choice
final ButtonGroup buttonGroup = new ButtonGroup();
// initialise other components
// use fake space for label rather than use another HorizontalGlue
JLabel label = new JLabel(" " + message);
// panel containing collection selection
JPanel selectionPanel = new JPanel();
// run initialiser methods
JPanel buttonPanel = (JPanel) createButtons(buttonGroup, dialog);
AbstractButton selection[] = createSelection(vector, buttonGroup,
selectionPanel);
// scrollPane containing collection panel
JScrollPane scrollPane = new JScrollPane(selectionPanel,
JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
// panel containing scroll pane
JPanel scrollPanel = new JPanel();
scrollPanel.setLayout(new BoxLayout(scrollPanel, BoxLayout.X_AXIS));
selectionPanel.setLayout(new GridLayout(vector.size(), 1));
// assemble component structure
scrollPanel.add(Box.createHorizontalGlue());
scrollPanel.add(scrollPane);
scrollPanel.add(Box.createHorizontalGlue());
dialog.add(label);
dialog.add(scrollPanel);
dialog.add(buttonPanel);
// set all components to be left-justified
label.setAlignmentX(0.0F);
scrollPanel.setAlignmentX(0.0F);
selectionPanel.setAlignmentX(0.0F);
buttonPanel.setAlignmentX(0.0F);
// set higher-level component sizes
Silk.setSizeAttributes(label, 300, 30, true);
selectionPanel.setMaximumSize(new Dimension(250, 400));
scrollPane.setMinimumSize(new Dimension(250, 50));
scrollPane.setMaximumSize(new Dimension(250, 400));
dialog.setMinimumSize(new Dimension(300, 200));
dialog.setMaximumSize(new Dimension(300, 500));
dialog.pack();
// set components to be opaque
label.setOpaque(true);
scrollPane.setOpaque(true);
selectionPanel.setOpaque(true);
// display dialog frame
// dialog.setResizable(false);
dialog.setVisible(true);
protected static class ChooseCollectionDialog extends
AbstractSelectionDialog implements SelectionDialog {
public ChooseCollectionDialog() {
super();
public JPanel createButtons(ButtonGroup bg, JDialog jd) {
final ButtonGroup buttonGroup = bg;
final JDialog dialog = jd;
// confirmation buttons
JButton okBtn = new JButton();
JButton cancelBtn = new JButton();
JButton newBtn = new JButton();
// panel containing OK and CANCEL buttons
JPanel bothPanel = new JPanel();
// panel containing NEW COLLECTION button
JPanel newPanel = new JPanel();
// panel to contain all other button panels
JPanel confPanel = new JPanel();
confPanel.setLayout(new BoxLayout(confPanel, BoxLayout.X_AXIS));
newPanel.setLayout(new BoxLayout(newPanel, BoxLayout.X_AXIS));
bothPanel.setLayout(new BoxLayout(bothPanel, BoxLayout.Y_AXIS));
// definition of button Actions
okBtn.setAction(new AbstractAction() {
public void actionPerformed(ActionEvent ae) {
dialog.dispose();
cancelBtn.setAction(new AbstractAction() {
public void actionPerformed(ActionEvent ae) {
dialog.dispose();
newBtn.setAction(new AbstractAction() {
public void actionPerformed(ActionEvent ae) {
// override action-set button text
okBtn.setText("Ok");
cancelBtn.setText("Cancel");
newBtn.setText("Add New Collection");
// set button sizes
Silk.setSizeAttributes(okBtn, 115, 30, true);
Silk.setSizeAttributes(cancelBtn, 115, 30, true);
Silk.setSizeAttributes(newBtn, 250, 30, true);
// set opaque buttons
confPanel.setOpaque(true);
okBtn.setOpaque(true);
cancelBtn.setOpaque(true);
// assemble components
confPanel.add(Box.createHorizontalGlue());
confPanel.add(okBtn);
confPanel.add(Box.createRigidArea(new Dimension(20, 0)));
confPanel.add(cancelBtn);
confPanel.add(Box.createHorizontalGlue());
newPanel.add(Box.createHorizontalGlue());
newPanel.add(newBtn);
newPanel.add(Box.createHorizontalGlue());
bothPanel.add(Box.createRigidArea(new Dimension(0, 10)));
bothPanel.add(confPanel);
bothPanel.add(Box.createRigidArea(new Dimension(0, 5)));
bothPanel.add(newPanel);
bothPanel.add(Box.createRigidArea(new Dimension(0, 10)));
bothPanel.setMaximumSize(new Dimension(300, 100));
return bothPanel;
public AbstractButton[] createSelection(Vector<String> argVector,
ButtonGroup buttonGroup, JPanel selectionPanel) {
Vector<String> vector = argVector;
JRadioButton selection[] = new JRadioButton[vector.size()];
for (int i = 0; i < vector.size(); i++)
selection[i] = new JRadioButton(vector.get(i));
AbstractButton current;
for (byte i = 0; i < selection.length; i++) {
current = selection;
// set action command string to later identify button that's
// selected
current.setActionCommand(vector.get(i));
// fix button's size
Silk.setSizeAttributes(current, 250, 30, true);
// set button's colour
current.setBackground(Color.WHITE);
// add button to buttongroup
buttonGroup.add(current);
// add button to appropriate JPanel
selectionPanel.add(current);
// ensure one button is selected to prevent pressing OK with no
// selection
selection[0].setSelected(true);
return selection;
public static void main(String args[]) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
new ChooseCollectionDialog();
I considered that the GridLayout might be a problem, but surely the fact that it's ultimately contained in a BoxLayout (which [i]does respect maximum size) means the maximum size still shouldn't be exceedable?
Thanks. -
JDialog problem with 1.4.2_05?
I've got a program that needs to stop processing and display a JDialog (or JFrame if easier) to gather user information. The problem I'm having seems to be in .setVisible(). It renders the window and the title bar, and never finishes rendering the guts of the JDialog. I've stripped it down to basically a "hello world" label, and it still doesn't disply. Can some one please help me with this? I'm totally stumped. I've seen posting and bug reports that sound similar, but they say a fix was coming in 1.4, and I'm using 1.4. Thanks in advance.
The problem actually seems to be the combination of setModal(true) and setVisible(). If I remove the setModal, the screen renders properly, but processing continues.
My outter class is a socket server that listens, and validates some data. It gets to this section :
if (open == false) {
DateScreen ds = new DateScreen();
I need a valid date for this transaction. The DateScreen looks like :
public class DateScreen extends JDialog implements ShipInterface/*, ActionListener*/ {
private NumberFormat nto2a = NumberFormat.getInstance();
private JDatePicker jdp = new JDatePicker();
private Carrier carrier = null;
public DateScreen() {
this.setModal(true);
nto2a.setMinimumIntegerDigits(2);
nto2a.setGroupingUsed(false);
int debug=0;
this.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
JPanel main = new JPanel();
this.setContentPane(main);
this.getContentPane().setLayout(new BoxLayout(main, BoxLayout.X_AXIS));
jdp = new JDatePicker();
jdp.setAutoCalendarPosition(true);
Calendar cal = Calendar.getInstance();
try {
jdp.setMinDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DATE));
} catch (JDatePickerException e) {
e.printStackTrace();
this.getContentPane().add(Box.createHorizontalStrut(10));
this.getContentPane().add(jdp);
JButton jb = new JButton("Continue");
jb.setActionCommand("date_continue");
this.getContentPane().add(Box.createHorizontalStrut(5));
this.getContentPane().add(jb);
this.getContentPane().add(Box.createHorizontalStrut(10));
this.pack();
this.setVisible(true);
} -
JDialog Problem: How to make a simple "About" dialog box?
Hi, anyone can try me out the problem, how to make a simple "About" dialog box? I try to click on the MenuBar item, then request it display a JDialog, how? Following is my example code, what wrong code inside?
** Main.java**
============================
publc class Main extends JFrame{
public Main() {
super();
setJMenuBar();
initialize();
public void setJMenuBar()
JMenuBar menubar = new JMenuBar();
setJMenuBar(menubar);
JMenu menu1 = new JMenu("File");
JMenuItem item = new JMenuItem("About");
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
// About about = new About(this);
// about.show();
menu1.add(item);
menubar.add(menu1);
public static void main(String args[]){
Main main = new Main();
}** About.java**
=============================
import java.awt.*;
import javax.swing.*;
public class About extends JDialog{
JPanel jp_top, jp_center, jp_bottom;
public About(JFrame owner){
super(owner);
setDefaultCloseOperation( DISPOSE_ON_CLOSE );
Image img = Toolkit.getDefaultToolkit().getImage(DateChooser.class.getResource("Duke.gif"));
setIconImage( img );
setSize(500,800);
Container contentPane = getContentPane();
contentPane.setLayout(new BorderLayout());
contentPane.add(getTop(), BorderLayout.NORTH);
contentPane.add(getCenter(), BorderLayout.CENTER);
contentPane.add(getBottom(), BorderLayout.SOUTH);
setResizable(false);
pack();
setVisible(true);
public JPanel getTop(){
jp_top = new JPanel();
return jp_top;
public JPanel getCenter(){
jp_center = new JPanel();
return jp_center;
public JPanel getBottom(){
jp_bottom = new JPanel();
jp_bottom.setLayout(new BoxLayout(jp_bottom, BoxLayout.X_AXIS));
JButton jb = new JButton("OK");
jp_bottom.add(jb);
return jp_bottom;
}Code looks reasonable except
a) the code in the actionPerformed is commment out
b) the owner of the dialog should be the frame
If you need further help then you need to create a "Short, Self Contained, Compilable and Executable, Example Program (SSCCE)",
see http://homepage1.nifty.com/algafield/sscce.html,
that demonstrates the incorrect behaviour, because I can't guess exactly what you are doing based on the information provided. -
Adding panel into JDialog at run time problem
Hi ,
I am adding one component at a time into the jdialog at run time.
What I do , when I launch jdialog instance first time I added one
component into the jdialog. when OI press next button it removes this
component and adding next one , but the problem is that is is not showing in the jdialog.
Please give me any idea that
How I can add component into jdialog at run time.
Thaks In Advance.
- vikasHello,
without source-code its difficult to understand where your problem is. The following sample code works 'fine':
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class AddCompoDialog extends JDialog {
int compoCounter;
public AddCompoDialog(){
setLocationRelativeTo(null);
setSize(300,300);
JPanel mainPanel=new JPanel(new BorderLayout());
JPanel buttonPanel =new JPanel();
final JPanel compoPanel=new JPanel(new GridLayout(10,10));
JButton newCompo=new JButton("add new Component");
newCompo.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
compoPanel.add(new JLabel("Compo #"+ ++compoCounter));
compoPanel.revalidate(); //Dont forget to relayout your container
buttonPanel.add(newCompo);
JButton close=new JButton("close Dialog");
close.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e) {
dispose();
buttonPanel.add(close);
mainPanel.add(buttonPanel,BorderLayout.NORTH);
mainPanel.add(compoPanel);
getContentPane().add(new JScrollPane(mainPanel));
public static void main(String[] params) {
new AddCompoDialog().setVisible(true);
}Regards,
Tim -
Problem subclassing a modal JDialog
Hi, I've run into a problem when creating a subclass of a class which itself extends JDialog. The problem is this:
I have a class, lets call it SuperDialog, which extends JDialog. In the constructor, I set it to be a modal dialog. This works fine.
However, when I try to create a subclass of SuperDialog, (lets call it SubclassDialog), this is where I run into difficulty. The problem is that the constructor for the SubclassDialog seems to get stuck when it calls on the constructor of SuperDialog, and does not do the rest of the constructor, which is really wierd, and I can't understand why.
For example, if the constructor for the SubclassDialog is something like this:
public SubclassDialog()
super(); // The constructor gets stuck here
do something here // This code does not get executed
}The 'do something here' code is not executed. The problem disappears if the SuperDialog is set to NOT modal. Can anyone explain to me why, and how to get round this problem? Here's a test program to illustrate what I'm on about. If you run the program, you will see the subclass dialog window appear containing the text "this is the superclass dialog" - the text SHOULD read "this is the subclass-dialog", because this was set in the subclass dialog constructor. Thanks for any help. James
import javax.swing.*;
import java.awt.Color;
public class ModalDialogTest extends JFrame
public static void main(String[] args)
ModalDialogTest test = new ModalDialogTest();
test.run();
public void run()
class SuperclassModalDialog extends JDialog
protected JTextField text = new JTextField("This is the superclass dialog");
public SuperclassModalDialog(JFrame frame)
super(frame, "This is the superclass dialog", true);
// Setting this to 'false' eliminates the problem
frame.setVisible(true);
add(text);
pack();
setVisible(true);
class SubclassModalDialog extends SuperclassModalDialog
public SubclassModalDialog(JFrame frame)
super(frame);
text.setText("This is the SUBCLASS dialog");
SubclassModalDialog dialog = new SubclassModalDialog(this);
}Ah right, I see! Thanks a lot for that, solves my problem. Duke stars on their way!
BTW, I'm curious why you would never subclass JDialog. I find that subclassing JDialog is a convenient way to create a pop-up window which blocks all other windows until it is closed - is there an easier / better way to do this?
Thanks again,
James
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