Error while running PING program using applet. Pls correct the code.-urgent

Question

Can anyone pls correct the error in the below code.
Program : TestExec1
Using : Applet
Logic : Trying to display the ping status in the text area but it returns error...!
CODING
import java.awt.*;
import java.lang.*;
import java.io.*;
import java.net.*;
import java.awt.event.*;
import java.applet.*;
import java.*;
/*<applet code="TestExec1" width=380 height=150>
</applet>
public class TestExec1 extends Applet
String line = null;
TextArea outputArea;
Process p;     
     public void init()
          outputArea = new TextArea(20,20);
     public void start()
          try
                    Process p= Runtime.getRuntime().exec("ping 192.168.100.192 -t");
                    BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
                    while ((line = in.readLine()) != null)
                         outputArea.append("\n" + line);
                         System.out.println(line);
          catch (IOException e)
                    e.printStackTrace();
Error : C:\Program Files\Java\jdk1.6.0_02\bin>appletviewer TestExec1.java
java.security.AccessControlException: access denied (java.io.FilePermission <<AL
L FILES>> execute)
at java.security.AccessControlContext.checkPermission(AccessControlConte
xt.java:323)
at java.security.AccessController.checkPermission(AccessController.java:
546)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
at java.lang.SecurityManager.checkExec(SecurityManager.java:782)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:447)
at java.lang.Runtime.exec(Runtime.java:593)
at java.lang.Runtime.exec(Runtime.java:431)
at java.lang.Runtime.exec(Runtime.java:328)
at TestExec1.start(TestExec1.java:31)
at sun.applet.AppletPanel.run(AppletPanel.java:458)
at java.lang.Thread.run(Thread.java:619)
Regards
ESM

Answer 1

java.security.AccessControlException: access denied (java.io.FilePermission
<<ALL FILES>> execute)This message tells you that the applet does not have permission to access/execute files. Access may be granted by either signing the applet, which allows the user to grant (or not grant) the access when running the applet, or by adding the necessary permission file to the user's computer.
See http://java.sun.com/javase/6/docs/technotes/guides/security/index.html