How do I add an image to a JButton

I am trying to add an image to a JButton and I'm not sure what I'm missing. When I run the following code the button looks exactly the same as if I had created it without any image attribute. Water.bmp is in the root of my project folder.

ImageIcon water = new ImageIcon("water.bmp");
	JButton button = new JButton(water);
	frame.add(button);

I think that your problem is in the location of the image. You shall place it in your source, and then use it like this:

  JButton button = new JButton();
  try {
    Image img = ImageIO.read(getClass().getResource("resources/water.bmp"));
    button.setIcon(new ImageIcon(img));
  } catch (Exception ex) {
    System.out.println(ex);
  }

In this example, it is assumed that image is in src/resources/ folder.

@Rogach

and you may like to add:

// to remote the spacing between the image and button's borders
button.setMargin(new Insets(0, 0, 0, 0));
// to add a different background
button.setBackground( ... );
// to remove the border
button.setBorder(null);

It looks like a location problem because that code is perfectly fine for adding the icon.

Since I don't know your folder structure, I suggest adding a simple check:

File imageCheck = new File("water.bmp");

if(imageCheck.exists()) 
    System.out.println("Image file found!")
else 
    System.out.println("Image file not found!");

This way if you ever get your path name wrong it will tell you instead of displaying nothing. Exception should be thrown if file would not exist, tho.

You put your image in resources folder and use follow code:

JButton btn = new JButton("");
btn.setIcon(new ImageIcon(Class.class.getResource("/resources/img.png")));

public class ImageButton extends JButton {

    protected ImageButton(){
    }

    @Override
        public void paint(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;
        Image img = Toolkit.getDefaultToolkit().getImage("water.bmp");
    
        g2.drawImage(img, 45, 35, this);
        g2.finalize();
    }
}

---

OR use this code

class MyButton extends JButton {

    Image image;
    ImageObserver imageObserver;
      

    MyButtonl(String filename) {
            super();
            ImageIcon icon = new ImageIcon(filename);
            image = icon.getImage();
            imageObserver = icon.getImageObserver();
        }

     public void paint( Graphics g ) {
            super.paint( g );
            g.drawImage(image,  0 , 0 , getWidth() , getHeight() , imageObserver);
        }
    }

I did only one thing and it worked for me .. check your code is this method there ..

setResizable(false);

if it false make it true and it will work just fine .. I hope it helped ..

buttonB.setIcon(new ImageIcon(this.getClass().getResource("imagename")));

		

//paste required image on C disk
JButton button = new JButton(new ImageIcon("C:water.bmp");

This code work for me:

    BufferedImage image = null;
    try {
        URL file = getClass().getResource("water.bmp");
        image = ImageIO.read(file);
    } catch (IOException ioex) {
        System.err.println("load error: " + ioex.getMessage());
    }
    ImageIcon icon = new ImageIcon(image);
    JButton quitButton = new JButton(icon);

For example if you have image in folder res/image.png you can write:

try
{
	ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
	InputStream input = classLoader.getResourceAsStream("image.png");
	// URL input = classLoader.getResource("image.png"); // <-- You can use URL class too.
	BufferedImage image = ImageIO.read(input);

	button.setIcon(new ImageIcon(image));
}
catch(IOException e)
{
	e.printStackTrace();
}

In one line:

try
{
	button.setIcon(new ImageIcon(ImageIO.read(Thread.currentThread().getContextClassLoader().getResourceAsStream("image.png"))));
}
catch(IOException e)
{
	e.printStackTrace();
}

If the image is bigger than button then it will not shown.