Caused by: java.security.AccessControlException: access denied ("java.lang.reflect.ReflectPermission" "newProxyInPackage.org.productivity.java.syslog4j.impl.unix")

[fengjian1993]

i use
grant {
permission java.net.SocketPermission "*", "listen,connect,accept,resolve";

permission java.lang.reflect.ReflectPermission "newProxyInPackage.org.graylog2.syslog4j.impl.unix";
};
but not work