如何调整JLabel ImageIcon的大小？

调整图标大小并不容易。您需要使用Java的2D图形来缩放图像。第一个参数是Image类，您可以从

ImageIcon

ImageIcon

private Image getScaledImage(Image srcImg, int w, int h){    BufferedImage resizedImg = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);    Graphics2D g2 = resizedImg.createGraphics();    g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);    g2.drawImage(srcImg, 0, 0, w, h, null);    g2.dispose();    return resizedImg;}