Java Data Type Tutorial - Java SecurityManager .checkPackageDefinition (String pkg)

Syntax

SecurityManager.checkPackageDefinition(String pkg) has the following syntax.

public void checkPackageDefinition(String pkg)

Example

In the following code shows how to use SecurityManager.checkPackageDefinition(String pkg) method.

/* ww  w.j av  a  2  s .  c  om*/
public class Main extends SecurityManager {

   // checkPackageDefinition needs to be overriden
   @Override
   public void checkPackageDefinition(String pkg) {
      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);

      sm.checkPackageDefinition("java2s.com");

      System.out.println("Allowed!");
   }
}