如何在 JOptionPane.showInputDialog 上显示图标？

Question

我有以下代码：

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

我想在 JOptionPane 中显示一个图标以及我的消息。我怎么做？我在执行此操作时收到一条错误消息：

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

将图像添加到 JOptionPane 我相信这就是您想要的

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();
    }
}

有关详细信息，请查看 here

如何在 JOptionPane.showInputDialog 上显示图标？

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

java

icons

swing

joptionpane