Create a GUI on java that looks like

Including this in the project

import javafx.collections.ObservableList;

import javafx.scene.layout.StackPane;

import javafx.scene.paint.Color;

import javafx.scene.shape.Polygon;

public class UpdateablePolygon extends StackPane $\{$

private int sides;

private double radius;

public int getSides$()\{$

return this.sides;

$\}$

public double getRadius$()\{$

return this.radius;

$\}$

public UpdateablePolygon$()\{$

$//$this$.$setPrefSize$(125,125)$;

this.radius $=100$;

this.paint$()$;

$//$this$.$setStyle$("-$fx$-$border$-$color: black"$)$;

$\}$

public void setSides$($int sides$)\{$

if $($sides $>2)\{$

this.sides $=$ sides;

this.paint$()$;

$\}$

$\}$

private void paint$()\{$

this.getChildren$().$clear$()$;

double centerX $=$ this.getWidth$()/2$;

double centerY $=$ this.getHeight$()/2$;

Polygon poly $=$ new Polygon$()$;

poly.setFill$($Color$.$WHITE$)$;

poly.setStroke$($Color$.$BLACK$)$;

ObservableList list $=$ poly.getPoints$()$;

$//$ Add points to the polygon list

for $($int i $=0$; i $$ this.sides; i$++)\{$

list.add$($centerX $+$ this.radius $*$ Math.cos$(2*$ i $*$ Math.PI $/$ this.sides$))$;

list.add$($centerY $-$ this.radius $*$ Math.sin$(2*$ i $*$ Math.PI $/$ this.sides$))$;

$\}$

this.getChildren$().$add$($poly$)$;

$\}$

$\}$