直接用 java 命令行动态生成jpg文件

直接用 java 命令行动态生成jpg文件(2)     data.addElement(new Integer(100));
    data.addElement(new Integer(120));
    data.addElement(new Integer(150));
    data.addElement(new Integer(40));
    data.addElement(new Integer(5));
    
    jeruGraphics jg = new jeruGraphics();
    jg.image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
    Graphics g = jg.image.getGraphics();
    
    // 画坐标
    g.setColor(Color.white);
    g.fillRect(0, 0, width, height);
    g.setColor(Color.blue);
    g.drawLine(10,height-10,10,height-10-yLength);
    g.drawLine(10,height-10,10+xLength,height-10);

    // 连线
    int yTo;
    int yFrom = ((Integer)(data.elementAt(0))).intValue();
    for (int i=1; i<count; i++) {
      yTo=((Integer)(data.elementAt(i))).intValue();
      g.drawLine(10+i*xLength/count,height-10,10+i*xLength/count,height-15);
      g.drawLine(10+(i-1)*xLength/count,yFrom,10+i*xLength/count,yTo);
      yFrom=yTo;
    }
    
    jg.createJpg("d:\\aaa.jpg");
  
  }
}