Access denied when Runtime.getRuntime().exec

Question

I have an applet that opens a JFrame.
In the JFrame I have a JButton, when I click the button I want a browser to open with a specific website.
This doesn't work.
When I look in the cmd-prompt it says:
"java.security.AccessControlException: access denied (java.io.FilePermission C:\Program execute)"
What have I done wrong? Do I have to change the security settings? Where do I that?
class KnappListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
frame2 = new JFrame(e.getActionCommand());
frame2.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}});
String website = new String("http://www.microsoft.com");
try {
Runtime.getRuntime().exec("C:\\Program Files\\Internet Explorer\\IEXPLORE.exe"+website);
//Runtime.getRuntime().exec("cmd/C"+"start.exe"+website);
catch (IOException io) {}
}

Answer 1

it doesn't matter which class your program extends. if your program is an applet (running in a browser) it is not permitted to use Runtime.getRuntime().exec(). If your program is an application, it is allowed to do so.
I think there is a way for applets to get the permission through a policy, but I don't know how to do this.