SelfPopulatingCache cacheStatus = new SelfPopulatingCache(ehcache, new CacheEntryFactory() {
        @Override
        public Object createEntry(Object key) throws Exception {
            if (key.toString().equals(FLAG1)) {
                 return true;
            } else if (key.toString().equals(FLAG2)) {
                return false;
            }
            return null;
        }
     });