How do I set a custom icon to a JFrame?

Question

I am trying to set the JFrame icon to a custom image I have prepared. I am, however, getting this error when I write this code;


import javax.swing.ImageIcon;
import javax.swing.JFrame;



public class Game
{
    
    
    ImageIcon logo = new ImageIcon(getClass().getClassLoader().getResource("BounceAroundIcon.png"));
    

    public static void main (String[] args) 
    
    {

        

        
        JFrame window = new JFrame();
        
        window.setContentPane(new GamePanel());
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.setResizable(false);
        window.pack();
        window.setVisible(true);
        
        
    }
    
}

This has worked with another project of mine, but here it will not work. I'm new to Java programming, so sorry if this is obviously wrong.

You are not doing anything with the `logo` variable. Shouldn't there be a `window.setItcon()` or something? You could pass the `logo` there. — jpllosa, Dec 21 '20 at 17:00
(1-) *This has worked with another project of mine, but here it will not work.* - so then compare the working code with the code that is not working to determine the difference. — camickr, Dec 21 '20 at 17:15

score 1 · Answer 1 · answered Dec 21 '20 at 16:51

The class JFrame has a method setIconImage(Image). Therefore you need to get an Image from your ImageIcon. Fortunately the ImageIcon class has a method getImage() returning an Ìmage`object.

So, putting these two things together, you need to do:

window.setIconImageImage(logo.getImage());

How do I set a custom icon to a JFrame?

1 Answers1