NullPointerException while searching for a string

Hey there,

i'm currently working on a simpler version of Towny for bukkit.
Just special users are allowed to create towns. So i have a file, "town_permits.txt", where all these users are listed.

The problem is:
I try to search for the current user in the file, if he wants to create a town:

Code:

townpermissions = new FileReader("town_permits.txt");
BufferedReader topere = new BufferedReader(townpermissions);
String bfr = "";
do{
     try {
            bfr = topere.readLine();
            permitlines.add(bfr);
        System.out.println(bfr);
     }
     // catch...
 
} while ( bfr != null);

for ( int i = 0; i < permitlines.size(); i++){

    if ( permitlines.get(i).contains(actor.getName())){

            permission = true;

    }

}

Error is:

I can't imagine what that means

Thanks for any help,
immapoint

 

Can we have the full content of this file : "D3Player.java". The error come from the line 12, so I want to know what happen exactly there.