0
//Calling function
ImagePanel Panel_2 = new ImagePanel(new ImageIcon("C:/Users/kagarwal/Downloads/intacct_logo_standard_web.png").getImage());
Panel_2.add(new JButton());
Panel_2.revalidate();
//Called function
public class ImagePanel extends JPanel {
private Image img;
public ImagePanel(String img) {
this(new ImageIcon(img).getImage());
}
public ImagePanel(Image img) {
this.img = img;
Dimension size = new Dimension(img.getWidth(null), img.getHeight(null));
setPreferredSize(size);
setMinimumSize(size);
setMaximumSize(size);
setSize(size);
setLayout(null);
}
public void paintComponent(Graphics g) {
g.drawImage(img, 0, 0, null);
}
}
要求是:JPanel2需要有背景圖像,最重要的是我們需要添加JButton。但是,這裏的問題是新添加的JButton沒有出現在給定的JPanel中,它只顯示背景圖像。我是否缺少刷新?如何向JPanel添加背景,然後在該JPanel上添加一個JButton