Hi ,
When I run an application without secutiy manger, it has acces to all the resources. But even with
java -Djava.security.manager
coomand it seems to have all the access
. I have not given the permission by the policy tool. The code and explanation I am following is from sun tutorial.
click to go to sun tutorial Here is the source code:
import java.lang.*;
import java.security.*;
class GetProps {
public static void main(
String[] args) {
/*
Test reading properties w & w/out security manager */
String s;
try {
System.out.println("About to get os.name property value");
System.setSecurityManager(new SecurityManager());
s = System.getProperty("os.name", "not specified");
System.out.println(" The name of your operating system is: " + s);
System.out.println("About to get java.version property value");
s = System.getProperty("java.version", "not specified");
System.out.println(" The version of the JVM you are running is: " + s);
System.out.println("About to get user.home property value");
s = System.getProperty("user.home", "not specified");
System.out.println(" Your user home directory is: " + s);
System.out.println("About to get java.home property value");
s = System.getProperty("java.home", "not specified");
System.out.println(" Your JRE installation directory is: " + s);
} catch (Exception e) {
System.err.println("Caught exception " + e.toString());
}
}
}
Manoj Pandey,
SCJP 
