My applet is not working correctly...

Question

I am able to run it easily using Eclipse and it saves the file fine. When I try to run it using firefox, though, it shows the button but does not save the file. It's running offline, I thought I didn't need to JAR it...
import java.awt.Container;
import java.io.File;
import java.io.PrintStream;
import javax.swing.*;
public class SaveTest extends JApplet
     public JButton Button;
     public void init()
          Button = new JButton("Test...");
          Container mainWindow = getContentPane();
          mainWindow.add(Button);
          try
               File f1 = new File("C:\\Program Files\\SaveTest.txt");
               PrintStream out = new PrintStream(f1);
               out.println("This is a folder test.\nTest.\n\nTest.");
          catch(Exception e) { System.out.println("Exception: " + e); }
}

Answer 1

If you use an IDE, it creates a jar for your code and signs the jar for you. When you want to test your code in a browser, you need to sign it before.
Hope it helps: [Signing Code and Granting It Permissions|http://java.sun.com/docs/books/tutorial/security/toolsign/index.html]