Polygon Applet?

Question

Please Help with this the applet is not working i tested the html file and it works fine, but there is something wrong with the applet. I am new to this stuff so I need your help. Much appreciated
The requirements: Write an applet that lets the user click on six points. After the sixth point is clicked, the applet should draw a polygon with a vertex at each point the user clicked.
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.applet.Applet;
public class assignment10 extends JApplet
     int i;
     int [] xCoords = new int[6];
     int [] yCoords = new int[6];
          Init Method
     public void init()
          getContentPane().setBackground(Color.white); // set the background color to white
          addMouseListener(new MyMouseListener()); // add the Mouse listener
     public void paint(Graphics g, int xCoords,int yCoords)
          super.paint(g);
          g.drawPolygon(xCoords, yCoords, 6);
     private class MyMouseListener extends MouseAdapter
          public void mousePressed(MouseEvent e)
               for(i=0; i<5; i++) // fill the array
                    xCoords[i] = e.getX();
                    yCoords[i] = e.getY();
if(i==5) // when the subscript i = 5, then reset to 0
                    i=0;

Answer 1

You've got a lot to fix here. Some suggestions:
1) For our benefit and yours, please use code tags whenever you post code. This will help your code retain its formatting, make it easier to read, and thus more likely that someone here will want to read it and help you. You simply highlight your pasted code and press the "Code" button before you post your message.
2) Don't paint directly in the applet with a paint method. Paint instead in a JPanel that is somehow placed in the applet's contentPane, either directly or inside of another panel that is directly added. Then paint by overriding the JPanel's paintComponent method.
3) Note that any time you override a method, be it paint, paintComponent, or any other method, the signature of the override must precisely match the signature of the method that it's overriding. Thus paint must have this signature: public void paint(Graphics g), and the same for paintComponent. public void paint(Graphics g, int x, int y) just won't work.
4) If your paint method DID work in fact work, your drawPolygon wouldn't. Look at the API and you'll see that its method signature is not Graphics#drawPolygon(int, int, int). You need to use arrays with this method. Why not use the arrays that are held by the class? You will probably need two sets of arrays, one to hold the data to be used to paint with and one to build up this data as the mouse is being pressed, then swapped with the first array, the display array, when 6 points have been pressed.
5) You have a for loop inside of your mousePressed method of the MouseAdapter. This will never work here as this logic is broken. You must think through what must happen here to fix this, and I think it best if you figure this out yourself.
6) Let's continue on in this thread here, but in the future if you have Swing problems, you'll be best served to post the question in the Swing forum which is where the Swing gurus live. (Although this would probably be appropriate for the Java 2D forum also -- in the future you need to choose the one most appropriate of these and post only there).
Much luck, and hope this helps!