java:”シンボルを見つけられません”というエラーで困っています。

前提・実現したいこと

javaを最近学び始めたものです。
javaでドローエディタをつくっていたところ、以下のエラーメッセージが発生しました。

発生している問題・エラーメッセージ

DrawFrame.java:93:エラー: シンボルを見つけられません
f.draw(g);
^
シンボル: メソッド draw(Graphics)
場所: タイプFigureの変数 f

該当のソースコード

java
1import javax.swing.*;
2import java.awt.*;
3import java.awt.event.*;
4import java.util.*;
5
6class Figure{
7    protected int x, y, width, height;
8    protected Color color;
9    
10    public Figure(int x, int y, int w, int h, Color c){
11        this.x = x; this.y = y;
12        width = w; height = h;
13        color = c;
14    }
15
16    public void setSize(int w, int h){
17        width = w; height = h;
18    }
19    public void setLocation(int x, int y){
20        this.x = x; this.y = y;
21    }
22    public void reshape(int x1, int y1, int x2, int y2){
23        int newx = Math.min(x1, x2);
24        int newy = Math.min(y1, y2);
25        int neww = Math.abs(x1 - x2);
26        int newh = Math.abs(y1 - y2);
27        setLocation(newx,newy);
28        setSize(neww, newh);
29    }
30}
31
32class RectangleFigure extends Figure{
33    public RectangleFigure(int x, int y, int w, int h, Color c){
34        super(x, y, w, h, c);
35    }
36    public void draw(Graphics g){
37        g.setColor(color);
38        g.drawRect(x, y, width, height);
39    }
40}
41
42class DrawModel extends Observable{
43    protected ArrayList<Figure> fig;
44    protected Figure drawingFigure;
45    protected Color currentColor;
46
47    public DrawModel(){
48        fig = new ArrayList<Figure>();
49        drawingFigure = null;
50        currentColor = Color.red;
51    }
52
53    public ArrayList<Figure> getFigures(){
54        return fig;
55    }
56
57    public Figure getFigure(int idx){
58        return fig.get(idx);
59    }
60
61    public void createFigure(int x,int y){
62        Figure f = new RectangleFigure(x, y, 0, 0, currentColor);
63        fig.add(f);
64        drawingFigure = f;
65        setChanged();
66        notifyObservers();
67    }
68
69    public void reshapeFigure(int x1, int y1, int x2, int y2){
70        if(drawingFigure != null){
71            drawingFigure.reshape(x1,y1,x2,y2);
72            setChanged();
73            notifyObservers();
74        }
75    }
76}
77
78class ViewPanel extends JPanel implements Observer{
79    protected DrawModel model;
80    public ViewPanel(DrawModel m, DrawController c){
81        this.setBackground(Color.white);
82        this.addMouseListener(c);
83        this.addMouseMotionListener(c);
84        model = m;
85        model.addObserver(this);
86    }
87
88    public void paintComponent(Graphics g){
89        super.paintComponent(g);
90        ArrayList<Figure> fig = model.getFigures();
91        for(int i = 0; i < fig.size(); i++){
92            Figure f = fig.get(i);
93            f.draw(g);
94        }
95    }
96    public void update(Observable o, Object arg){
97        repaint();
98    }
99}
100
101class DrawController implements MouseListener, MouseMotionListener{
102    protected DrawModel model;
103    protected int dragStartX,dragStartY;
104    public DrawController(DrawModel a){
105        model = a;
106    }
107    public void mouseClicked(MouseEvent e){}
108    public void mousePressed(MouseEvent e){
109        dragStartX = e.getX();dragStartY = e.getY();
110        model.createFigure(dragStartX, dragStartY);
111    }
112    public void mouseDragged(MouseEvent e){
113        model.reshapeFigure(dragStartX, dragStartY, e.getX(), e.getY());
114    }
115    public void mouseReleased(MouseEvent e){}
116    public void mouseEntered(MouseEvent e){}
117    public void mouseExited(MouseEvent e){}
118    public void mouseMoved(MouseEvent e){}
119}
120
121class DrawFrame extends JFrame{
122    DrawModel model;
123    ViewPanel view;
124    DrawController cont;
125    public DrawFrame(){
126        model = new DrawModel();
127        cont = new DrawController(model);
128        view = new ViewPanel(model, cont);
129        this.setBackground(Color.black);
130        this.setTitle("Draw Editor");
131        this.setSize(500,500);
132        this.add(view);
133        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
134        this.setVisible(true);
135    }
136    public static void main(String[] args){
137        new DrawFrame();
138    }
139}
140