Всем привет!

Объясните, пожалуйста, как сделать это "владение RuntimePermission" ?

Creating new threads
...
Threads should possess the "modifyThread" RuntimePermission. If worker threads or other threads using the pool do not possess this permission, service may be degraded: configuration changes may not take effect in a timely manner, and a shutdown pool may remain in a state in which termination is possible but not completed.

from http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ThreadPoolExecutor.html