1 import sun.security.util.SecurityConstants;
2 import java.security.Permission;
3 
4 public class CustomSecurityManager extends SecurityManager {
5     @Override
checkPermission(Permission perm)6     public void checkPermission(Permission perm) {
7         if (perm.implies(SecurityConstants.AWT.TOPLEVEL_WINDOW_PERMISSION)) {
8             throw new SecurityException();
9         }
10     }
11 }
12