如何在Java中创建带圆角的图像？

Question

When I draw the BufferedImage with rounded corners

BufferedImage image = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
Graphics2D graphics = image.createGraphics();
graphics.setColor(Color.WHITE);
graphics.fill(new RoundRectangle2D.Float(0, 0, 60, 60, 20, 20));

The output image is:

How can I receive an image without black cornerns?

Answer 1

更改BufferedImage.TYPE_INT_RGB到BufferedImage.TYPE_INT_ARGB创建一个透明图像