B7. Write an applet to draw a polygon based on the number of sides of the polygon as input. Ex. If sides =3, it should draw a triangle, for 4 square for 8 octagon etc.

 /*
<applet code = Prog7.class width=600 height=600>
</applet>
*/

import java.applet.*;

import java.awt.*;

import java.awt.event.*;

public class Prog7 extends Applet implements ActionListener

{

    TextField text1,text2;

    //Function to initialize the applet

    public void init()

    {

        setBackground(Color.gray);

        setLayout(null);

        text1= new TextField(20);

        text1.setBounds(150,50,40,20);

        add(text1);

        text1.addActionListener(this);

    }

    

    public void actionPerformed(ActionEvent ae)

    {

        repaint();

    }

    //Function to draw and fill shapes

    public void paint(Graphics g)

    {

    //Draw a square

        int n;

        g.setColor(Color.blue);

        g.drawString("Enter a number to draw Polygon:",150,20);

        n=Integer.parseInt(text1.getText());

        if(n<5)

        {

            int x[]={200,300,300,200,200};

            int y[]={100,100,200,200,100};

            g.drawPolygon(x,y,n);

        }

        else if(n==5)

        {

                int x[]={200,400,400,200,100,200};

                int y[]={100,100,300,300,200,100};

                g.drawPolygon(x,y,n);

        }

        else if(n==8)

        {

                int x[]={200,300,400,400,300,200,100,100,200};

                int y[]={100,100,200,300,400,400,300,200,100};

                g.drawPolygon(x,y,n);

        }

    }

}