// try {
SubstanceImageWatermark watermark = new SubstanceImageWatermark("GUI/res/ciaobellawm.jpg");
//SubstanceCrosshatchWatermark watermark = new SubstanceCrosshatchWatermark();
watermark.setKind(ImageWatermarkKind.APP_TILE);
watermark.setOpacity(0.8f);// 设置水印透明度
SubstanceSkin skin = new CremeCoffeeSkin()
.withWatermark(watermark); // 初始化有水印的皮肤
SubstanceLookAndFeel.setSkin(skin); // 设置皮肤
// } catch (FileNotFoundException ex) {
// Logger.getLogger(ventanaLogin.class.getName()).log(Level.SEVERE, null, ex);
// }