Java Tutorial/Security/Access Controller

Use AccessController to check the AWT permission

import java.awt.AWTPermission;
import java.io.FilePermission;
import java.security.AccessController;
public class MainClass {
  public static void main(String args[]) throws Exception {
    AWTPermission ap = new AWTPermission("accessClipboard");
    AccessController.checkPermission(ap);
  }
}

Use AccessController to check the file permission

import java.awt.AWTPermission;
import java.io.FilePermission;
import java.security.AccessController;
public class MainClass {
  public static void main(String args[]) throws Exception {
    FilePermission fp = new FilePermission("c:\\autoexec.bat", "read");
    AccessController.checkPermission(fp);
  }
}