Java SecurityManager .checkListen (int port)
Syntax
SecurityManager.checkListen(int port) has the following syntax.
public void checkListen(int port)
Example
In the following code shows how to use SecurityManager.checkListen(int port) method.
/* ww w .j av a2 s .c o m*/
public class Main extends SecurityManager {
// checkListen needs to be overriden
@Override
public void checkListen(int port) {
throw new SecurityException();
}
public static void main(String[] args) {
System.setProperty("java.security.policy", "file:/C:/java.policy");
Main sm = new Main();
System.setSecurityManager(sm);
// perform the check
sm.checkListen(8080);
System.out.println("Allowed!");
}
}