¿Does this will work as an applet?

Question

Hello.
I have this working code on my Dot Matrix printer (in the parallel port):
package print;
import java.io.*;
public class lpt {
   public static void main(String[] argv) {
   try {
      FileOutputStream os = new FileOutputStream("LPT1");
      PrintStream ps = new PrintStream(os);
      String line = "this is a test";
      ps.println(line);
      ps.print("\f");
      ps.close();
   } catch (Exception e) {
      System.out.println("Exception occurred: " + e);
But when i convert it to an applet it seems that doesn't work. I'm using jnlp on my project, i have an old version (without FileOutputStream) using  java.awt.print.* but the result is distorted.
Maybe some part of the code isn't supported by java applets, i made some versions of the code as an applet but it didn't worked.

Answer 1

Well, here's the code:
package print;
import java.applet.Applet;
import java.io.*;
public class lpt extends Applet {
   public void init() {
   try {
     FileOutputStream os = new FileOutputStream("LPT1");
     PrintStream ps = new PrintStream(os);
     String text = "this is a test";
     ps.println(line);
     ps.print("\f");
     ps.close();
   } catch (Exception e) {
     System.out.println("Exception occurred: " + e);
It works well alone, but i need the applet to print tickets and buy/sale comprobants (using deployJava.js)... i changed the init() function to print(String text).
The text parameter will be sent from jQuery.
I was up all night (to get lucky ) and checked the console (sorry, but i'm little lost in java, i left it for php) and this was the error:
java.security.AccessControlException: access denied ("java.io.FilePermission" "LPT1" "write")
i found that all what i need is to add this inside
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() { /* MY CODE HERE */ });
And now is working, sorry about this question (i was working on it 2 weeks but after some coffee and twelve hours without sleep, i solved it.
Thanks for your responde