从 SupClass 到 Super 获取浮点属性

问：

我正在创建一个像 App for School 这样的 Paint 项目，在我当前的代码中，我有几个子类和一个超级类。super 应该包含要绘制的形状数组，每个形状对象都应该是它自己的子类，我稍后必须将其放入 Array 并从应用程序中调用。我必须使用 JDesktopPane 和 JInternalFrame，我不能使用 Arraylists，我目前一直试图将我的 RectDraw 子类的 Float 转换为我的 super。所有这一切，最终将工具嵌套在一个超级名为 MyShapes 的中。欢迎任何帮助。我不怎么使用 jdesktopPane，而且我不擅长投射。

        public class myShapes {

            public void paint(Graphics g) {

                graphSettings = (Graphics2D)g;
                graphSettings.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
                graphSettings.setStroke(new BasicStroke(4));

                Iterator<Color> strokeCounter = shapeStroke.iterator();
                Iterator<Color> fillCounter = shapeFill.iterator();
                Iterator<Float> transCounter = transPercent.iterator();

                for (Shape s : shapes){
                    graphSettings.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, transCounter.next()));
                    graphSettings.setPaint(strokeCounter.next());
                    graphSettings.draw(s);
                    graphSettings.setPaint(fillCounter.next());
                    graphSettings.fill(s);
                    }


                if (drawStart != null && drawEnd != null){

                    graphSettings.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.40f));
                    graphSettings.setPaint(Color.LIGHT_GRAY);

                    Shape aShape = null;                            

                    if (currentAction == 2){                            
                        RectDraw drawRectangle = new RectDraw();
                        aShape = drawRectangle(x1, y1, x2, y2);                     
                    } 
                    else if (currentAction == 3){                           
                        CircleDraw drawEllipse = new CircleDraw();
                        aShape = drawEllipse(x1, y1, x2, y2);
                    } 
                    else if (currentAction == 4) {
                        LineDraw drawLine = new LineDraw();
                        aShape = drawLine(x1, y1, x2, y2);
                    }

                    graphSettings.draw(aShape);
                    }
                }
            }

这些是我的子类

package mainPackage;

import java.awt.geom.Rectangle2D;

public class RectDraw extends myShapes {

public Rectangle2D.Float drawRectangle(int x1, int y1, int x2, int y2) {

    int RDx, RDy, RDwidth, RDheight;

    RDx = Math.min(x1, x2);
    RDy = Math.min(y1, y2);
    RDwidth = Math.abs(x1 - x2);
    RDheight = Math.abs(y1 - y2);

    return new Rectangle2D.Float(RDx, RDy, RDwidth, RDheight);
}
}

除了名字之外，其他的完全相同

public class CircleDraw extends myShapes {

public Ellipse2D.Float drawEllipse(int x1, int y1, int x2, int y2){

     int x = Math.min(x1, x2);
     int y = Math.min(y1, y2);
     int width = Math.abs(x1 - x2);
     int height = Math.abs(y1 - y2);

     return new Ellipse2D.Float(x, y, width, height);
 }
}


public class LineDraw extends myShapes {

    public Line2D.Float drawLine(int x1, int y1, int x2, int y2) {

        return new Line2D.Float(x1, y1, x2, y2);
    }
}

我一直得到无法解析为变量