f = new JFrame();
    f.setExtendedState(JFrame.MAXIMIZED_BOTH);
    f.setVisible(true);
    f.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
    
    d = new JPanel();
    f.add(d);
    ImageIcon icon = new ImageIcon("C:\\Users\\jean\\Pictures\\988057.jpg");
    JLabel background = new JLabel(icon);
    background.setSize(d.getSize());
    background.setLocation(0,0);
    d.add(background);
    d.setLayout(null);
    background.setOpaque(true);

    d.add(background, BorderLayout.CENTER, 0);

Im triying to put a JLabel as a BackGround but I cant. the path its all right. what happening?

CodePudding user response：

You are calling f.setVisible(true), before adding label and icons to it. And you don't want to add panel in between label and fram. You can try this approach,

            f = new JFrame();
            f.setExtendedState(JFrame.MAXIMIZED_BOTH);

            f.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);

            ImageIcon icon = new ImageIcon("C:\\Users\\jean\\Pictures\\988057.jpg");
            JLabel background = new JLabel();
            background.setIcon(icon);

            background.setSize(f.getSize());
            f.add(background);
            f.setVisible(true);

I hope this will solve your problem.

CodePudding user response：

The Solution. Thanks Guys.

    f = new JFrame();
    f.setExtendedState(JFrame.MAXIMIZED_BOTH);
    f.setVisible(true);
    f.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
    
    d = new JPanel();
    d.setSize(f.getSize());
    f.add(d);   
    
    File file = new File("C:\\Users\\jean\\Pictures\\988057.jpg");

    
    try {
        
        BufferedImage image = ImageIO.read(file);
        JLabel label = new JLabel(new ImageIcon(image));
        label.setSize(d.getSize());
        d.add(label);
        
    } catch (IOException e) {
        e.printStackTrace();
        
    }