package JavaFun;

import javax.swing.$*$;

import java.awt.$*$;

import java.awt.event.$*$;

import java.util.ArrayList;

import java.util.List;

public class DrawPolygon extends JFrame implements MouseListener, ActionListener $\{$

private List points;

private JButton drawButton, clearButton;

private boolean isDrawing;

private DrawingPanel drawingPanel;

public DrawPolygon$()\{$

setTitle$("$Polygon Drawer"$)$;

setSize$(400,400)$;

setDefaultCloseOperation$($JFrame$.$EXIT$\_$ON$\_$CLOSE$)$;

JPanel buttonPanel $=$ new JPanel$()$;

drawButton $=$ new JButton$("$Draw Polygon"$)$;

drawButton.addActionListener$($this$)$;

clearButton $=$ new JButton$("$Clear$")$;

clearButton.addActionListener$($this$)$;

buttonPanel.add$($drawButton$)$;

buttonPanel.add$($clearButton$)$;

add$($buttonPanel$,$ BorderLayout.SOUTH$)$;

drawingPanel $=$ new DrawingPanel$()$;

add$($drawingPanel$)$;

points $=$ new ArrayList$<>()$;

isDrawing $=$ false;

setVisible$($true$)$;

$\}$

public void actionPerformed$($ActionEvent e$)\{$

if $($e$.$getSource$()==$ drawButton$)\{$

isDrawing $=$ true;

$\}$ else if $($e$.$getSource$()==$ clearButton$)\{$

points.clear$()$;

isDrawing $=$ false;

$\}$

drawingPanel.repaint$()$;

$\}$

public void mouseClicked$($MouseEvent e$)\{$

if $($isDrawing$)\{$

points.add$($e$.$getPoint$())$;

System.out.println$("$Point added: $"+$ e$.$getPoint$())$;

drawingPanel.repaint$()$;

System.out.println$("$Repainting$...")$;

$\}$

$\}$

public void mousePressed$($MouseEvent e$)\{$

System.out.println$("$Mouse pressed"$)$;

$\}$

public void mouseReleased$($MouseEvent e$)\{$

System.out.println$("$Mouse released"$)$;

$\}$

public void mouseEntered$($MouseEvent e$)\{$

System.out.println$("$Mouse entered"$)$;

$\}$

public void mouseExited$($MouseEvent e$)\{$

System.out.println$("$Mouse exited"$)$;

$\}$

private class DrawingPanel extends JPanel $\{$

@Override

protected void paintComponent$($Graphics g$)\{$

super.paintComponent$($g$)$;

if $($isDrawing$)\{$

if $(!$points.isEmpty$())\{$

int$[]$ xPoints $=$ new int$[$points$.$size$()]$;

int$[]$ yPoints $=$ new int$[$points$.$size$()]$;

for $($int i $=0$; i $<$ points.size$()$; i$++)\{$

Point point $=$ points.get$($i$)$;

xPoints$[$i$]=($int$)$ point.getX$()$;

yPoints$[$i$]=($int$)$ point.getY$()$;

$\}$

g$.$drawPolygon$($xPoints$,$ yPoints, points.size$())$;

$\}$

$\}$

$\}$

$\}$

public static void main$($String$[]$ args$)\{$

SwingUtilities.invokeLater$($DrawPolygon::new$)$;

$\}$

$\}$ why is my code not working