Setting permissionsin policy file and using threads

[crazyme207]

I have written the following code:

//this is saved in /home/myname/main/second/

package second;
public class secThread extends Thread{
public void run(){
FileWriter fw = new FileWriter("file.txt");
fw.close;
}
}

-------------------------------

//this is saved in /home/myname/main/
import second.secThread;
public class mainProg{
public static void main(String args[]) {
secThread st = new secThread();
st.start();
}
}

----------------------------------
my policyfile has the following entry"

grant codeBase "file:/home/myname/main/*"
 permission java.io.FilePermission &quot;<<ALL FILES>>&quot;;
};

notice, secThread does not have permission to write to anyfile
---------------------------------
when i run mainProg, using the default security manager and the policyfile above, i do not get an exception. However, I think I should because secThread is writing to a file, but it does not have java.io.FilePermission, "write" to write to any file!

Can someone please help me out here?
I am using JDK1.3

Thanks
SG

 

[idarke]

By default, on a local system, all threads have write permission. You might be able to use a policy file to take away this permission (I've never tried).



"When you have eliminated the impossible, whatever remains, however
improbable, must be the truth." ~ Arthur Conan Doyle