Method clearExpired

src/main/java/com/jdon/cache/UtilCache.java:481–491

Clears all expired cache entries; also clear any cache entries where the SoftReference in the CacheLine object has been cleared by the gc

()

	 * SoftReference in the CacheLine object has been cleared by the gc
	 */
	public void clearExpired() {
		Iterator keys = cacheLineTable.keySet().iterator();

		while (keys.hasNext()) {
			Object key = keys.next();

			if (hasExpired(key)) {
				removeObject(key);
			}
		}
	}

	public void stop() {
		clear();