When I run this, an empty title bar is displayed. I just want to be able to see the components and work from there, but nothing is displayed. The dialog is designed to allow the user to select a color by moving sliders, then return to color to the main page.
import java.awt.*;
import javax.swing.*;
public class ColourDialog extends JDialog
{
String colorNames[] = {"Red: ", "Green: ", "Blue: "};
Label labels[] = new Label[3];
JSlider slider[]= new JSlider[3];
Label lb;
static ColourDialog d;
public void ColourDialog()
{
setModal(true);
Container c = getContentPane();
c.setLayout(new BorderLayout());
JPanel sliderPanel = new JPanel();
sliderPanel.setLayout(new GridLayout(0, 1));
for (int i = 0; i < slider.length; i++)
{
labels[i] = new Label(colorNames[i] + 255);
sliderPanel.add(labels[i]);
slider[i] = new JSlider(SwingConstants.HORIZONTAL, 0, 255, 255);
slider[i].setMinorTickSpacing(10);
slider[i].setMajorTickSpacing(50);
slider[i].setPaintTicks(true);
slider[i].setPaintLabels(true);
sliderPanel.add(slider[i]);
//slider[i].addChangeListener(this);
}
lb = new Label("Colour");
c.add(sliderPanel, BorderLayout.CENTER);
c.add(lb, BorderLayout.SOUTH);
setSize(500, 450);
setLocation(200,200);
setTitle("Colour Dialog");
}
public static Color showDialog()
{
if (d == null)
d = new ColourDialog();
d.show();
//return new Color(red,green,blue);
return new Color(0,0,0);
}
public static void main(String args[])
{
ColourDialog.showDialog();
}
}
I think it might be because you say "public void ColourDialog()" this is an invalid constructor. Try getting rid of the "void" and try again.