How do I diplay an icon on a JOptionPane.showInputDialog?

Question

I have the following code:

 principleInputString = JOptionPane.showInputDialog(null,"Enter the   principle.","Find Interest Rate", JOptionPane.PLAIN_MESSAGE);

I want to display an icon in the JOptionPane as well as my message. How do I do that? I get an error message when I do this:

final ImageIcon icon = new ImageIcon(new URL("http://iconizer.net/files/Devine_icons/thumb/128/Calculater.png"));
 principleInputString = JOptionPane.showInputDialog(null,"Enter the   principle.","Find Interest Rate", JOptionPane.PLAIN_MESSAGE,icon);

Answer 1

To add an image to an JOptionPane I believe this is what you are after

import javax.swing.*;
import java.awt.*;

public class Test
{
    public static void main(String[] args)
    {
        final ImageIcon icon = new ImageIcon("yourimage.imagetype");
        Image image2 = icon.getImage().getScaledInstance(200,200,0);
        String principleInputString = JOptionPane.showInputDialog(null,"Enter the   principle.","Find Interest Rate", JOptionPane.PLAIN_MESSAGE, new ImageIcon(image2),  null, "").toString();
    }
}

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