Java将一张图片放在另一张图片上（位置可选）

/**
*param qrcodePath : 最后图片保存路劲
*/
public static void overlapImage(String qrcodePath) {
        try {
            BufferedImage big = new BufferedImage(1080, 1920, BufferedImage.TYPE_INT_RGB);  
            Graphics2D gd = big.createGraphics(); 
            //gd.setBackground(Color.white);
            gd.setColor(Color.white);
            gd.dispose();
            //BufferedImage big = ImageIO.read(new File(screenPath));
            //BufferedImage small = ImageIO.read(new File(qrcodePath));
            BufferedImage small = new BufferedImage(540, 540,BufferedImage.TYPE_INT_ARGB); 
            Graphics2D g = big.createGraphics();
            int x = (big.getWidth() - small.getWidth()) / 2;
            int y = 200 ;
            g.drawImage(small, x, y, small.getWidth(), small.getHeight(), null);
            g.dispose();
            ImageIO.write(big, "jpg", new File(qrcodePath));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

java实现简单的俩张图片，一张贴在另一张上面的方法。

图片的拼接。