JDK的反锯齿
分两种形状反锯齿g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);文字反锯齿g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);g2d.setRenderingHint(RenderingHints.KEY_FRAC
