Question

JAVAIO流中能否将一个字符串以图片的格式输出出来，即字符串显示在图片上另外用for循环画多张这样的图片

Answer 1

interface Brush {
    void paint(java.awt.Graphics g);
}

public class String2GraphicsDemo {
    static private class StringBrush implements Brush{
        private String s;
        void setString(String s){this.s=s;}
        public void paint(Graphics g) {
            if(s!=null && !s.isEmpty()) {
                Graphics2D g2 = (Graphics2D) g.create();
                g2.translate(2,15);
                g2.setColor(Color.YELLOW);
                g2.drawString(s,0,0);
                g2.dispose();
            }
        }
    }

    /**
     *
     * @param args
     * args[0] 待绘制的字符串
     * args[1] 输出的图片文件
     * args[2] 图片的宽度
     * args[3] 图片的高度
     * @throws IOException
     */
    public static void main(String...args) throws IOException {
        BufferedImage bufImg = new BufferedImage(Integer.parseInt(args[2]),Integer.parseInt(args[3]),BufferedImage.TYPE_INT_RGB);
        StringBrush brush = new StringBrush();
        brush.setString(args[0]);
        brush.paint(bufImg.getGraphics());
        ImageIO.write(bufImg,"png",new java.io.File(args[1]));
    }
}