**This is the example how you can move your jpanel**
> Move jpanel
import java.awt.Component;
import java.awt.Dialog.ModalityType;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class MovingDialog {
private static void createAndShowGui() {
JPanel panel = new JPanel();
panel.add(new JButton(new ShowMovingDialogAction()));
JFrame frame = new JFrame("MovingDialog");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(panel);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
class ShowMovingDialogAction extends AbstractAction {
private JPanel panel = new JPanel();
public ShowMovingDialogAction() {
super("Show Moving Dialog");
panel.add(new JLabel("label"));
panel.add(new JTextField("TextField", 10));
panel.add(new JButton("Button"));
}
@Override
public void actionPerformed(ActionEvent e) {
JFrame owner = (JFrame) SwingUtilities.getWindowAncestor((Component) e
.getSource());
final JDialog dialog = new JDialog(owner, "Dialog",
ModalityType.APPLICATION_MODAL);
dialog.getContentPane().add(panel);
dialog.pack();
dialog.setLocation(0, 0);
int delay = 20;
new Timer(delay , new ActionListener() {
int x = 0;
int y = 0;
Dimension scrn = Toolkit.getDefaultToolkit().getScreenSize();
@Override
public void actionPerformed(ActionEvent e) {
int maxX = scrn.width - dialog.getWidth();
int maxY = scrn.height - dialog.getHeight();
if (x < maxX && y < maxY) {
x++;
y++;
dialog.setLocation(x, y);
} else {
((Timer)e.getSource()).stop();
}
}
}).start();
dialog.setVisible(true);
}
}
**Note that the animation Swing Timer must be started before calling setVisible(true). Perhaps that is what Gilbert was referring to.**
Regarding Gilbert's assertion that a dialog can't be moved after being set visible, please run this:
import java.awt.Component;
import java.awt.Dialog.ModalityType;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class MovingDialog {
private static void createAndShowGui() {
JPanel panel = new JPanel();
panel.add(new JButton(new ShowMovingDialogAction()));
JFrame frame = new JFrame("MovingDialog");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(panel);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
class ShowMovingDialogAction extends AbstractAction {
private JPanel panel = new JPanel();
public ShowMovingDialogAction() {
super("Show Moving Dialog");
panel.add(new JLabel("label"));
panel.add(new JTextField("TextField", 10));
panel.add(new JButton("Button"));
}
@Override
public void actionPerformed(ActionEvent e) {
JFrame owner = (JFrame) SwingUtilities.getWindowAncestor((Component) e
.getSource());
final JDialog dialog = new JDialog(owner, "Dialog",
ModalityType.APPLICATION_MODAL);
dialog.getContentPane().add(panel);
dialog.pack();
dialog.setLocation(0, 0);
int delay = 20;
new Timer(delay , new ActionListener() {
int x = 0;
int y = 0;
Dimension scrn = Toolkit.getDefaultToolkit().getScreenSize();
@Override
public void actionPerformed(ActionEvent e) {
int maxX = scrn.width - dialog.getWidth();
int maxY = scrn.height - dialog.getHeight();
if (x < maxX && y < maxY) {
x++;
y++;
dialog.setLocation(x, y);
} else {
((Timer)e.getSource()).stop();
}
}
}).start();
dialog.setVisible(true);
}
}
Note that the animation Swing Timer *must* be started before calling setVisible(true). Perhaps that is what Gilbert was referring to.
