public void clearExpired() {
		Iterator keys = cacheLineTable.keySet().iterator();

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

			if (hasExpired(key)) {
				removeObject(key);
			}
		}
	}
public void clearExpired ( ) { Iterator keys = cacheLineTable . keySet ( ) . iterator ( ) ; while ( keys . hasNext ( ) ) { Object key = keys . next ( ) ; if ( hasExpired ( key ) ) { removeObject ( key ) ; } } }
Clears all expired cache entries; also clear any cache entries where the
SoftReference in the CacheLine object has been cleared by the gc