Java by API/java.net/SocketPermission

new SocketPermission(String host, String action)

import java.net.SocketPermission;
import java.security.AccessControlException;
import java.security.AccessController;
public class AccessTest {
  public static void main(String[] a) {
    SocketPermission sp = new SocketPermission("www.jexp.ru", "connect");
    try {
      AccessController.checkPermission(sp);
      System.out.println("Ok to open socket");
    } catch (AccessControlException ace) {
      System.out.println(ace);
    }
  }
}