JAvaコード生成ピクチャ

JAVAの画像生成方法

public class Tast001 {


        public static void main(String[] args) throws FileNotFoundException, IOException {
//       
            BufferedImage bi = new BufferedImage

                    (500,800,BufferedImage.TYPE_INT_RGB);//INT       ,RGB   ，  70,  150

//        (      )
            Graphics2D g2 = (Graphics2D) bi.getGraphics();

            g2.fillRect(0,0,500,800);//            (0,0), 70, 150;      
//    
            g2.setColor(Color.WHITE);
            g2.fillRect(0,0,500,800);//      (          )

            g2.setColor(Color.black);
            g2.drawRect(0,0,500-1,800-1); //   

            g2.setFont(new Font("  ",Font.BOLD,18)); //    :  、  、  
            g2.setColor(Color.BLACK);//      

            g2.drawString("HelloWorld",200,50); //        
            ImageIO.write(bi,"JPEG",new FileOutputStream("F:/a.jpg"));//     JPEG      

        }



}