Icons not visible after compilation

Question

ok i am a new one here and tried to write an awesome program:

package f;

import javax.swing.*;

public class dasMain {
    public static void main(String[] args) {
        ImageIcon img = new ImageIcon("pics/daFaq.png");
        JOptionPane.showMessageDialog(null, img, "u r heck", JOptionPane.PLAIN_MESSAGE);
    }
}

the thing is that if I run the program from Intellij Idea, then everything works fine, but after compilation the picture disappears

here are the source files of the project: https://i.ibb.co/Njc8jYp/screen.png

i want to run this awesome code with pictures on other computers, but i only know this way and it doesn't work :(

Answer 1

You probably do not know where your program expects the picture to be. If you modify your code slightly, this information would be evident. Make use of

• ImageIcon(URL)
• File.toURI()
• URI.toURL()

With that your code can look like this:

package f;
import javax.swing.*;
import java.io.File;

public class dasMain {
    public static void main(String[] args) {
        File png = new File("pics/daFaq.png");
        System.out.println("Loading image from " + png.getAbsolutePath());
        ImageIcon img = new ImageIcon(png.toURI().toURL());
        JOptionPane.showMessageDialog(null, img, "u r heck", JOptionPane.PLAIN_MESSAGE);
    }
}

Also I am pretty sure you intend to ship the png together with your code, so you better load it as a resource from the classpath. Here is an example.

I also investigated a bit why you would not see any error message or exception. This is documented in ImageIcon. So you might want to verify the image was loaded using getImageLoadStatus().