CONSTANT Java Applet Problems, HELP!

Question

Alright, since I've had my mac, Java has never worked properly. I have the latest version of OSX and of Java, I tried repairing permissions and also tried manually installing the latest OSX update, but whenever a website uses the Java Applet (for a game / chatroom, etc.) It will never load, or it will freeze the computer while attempting to load.
I used to use Safari but now use Firefox.. Java doesn't work in either. This is a screen shot of what happens after a few seconds of waiting for this game to load:

Answer 1

Several issues
1) Don't paint in the JApplet itself. Instead paint in a JPanel and override its paintComponent method, not its paint method. In fact you would do well to create the GUI in this JPanel and then add the JPanel to the JApplet's contentPane.
2) Don't override update and don't call update.
3) The first line of your paintComponent(Graphics g) override should be a call to super.paintComponent(g)
4) I would strongly urge you to not use NetBeans to generate your Swing code. By doing this, you're hampering your Swing education.
5) You really shouldn't be adding a MouseListener to a JButton. Instead you add ActionListener's to buttons.
Good luck and HTH