public long[] getLongArray(final String key, final long[] def) {
		try {
			final long[] result = getLongArray(key);
			return result != null ? result : def;
		} catch (final NumberFormatException nfe) {
			return def;
		}
	}
public long [ ] getLongArray ( final String key , final long [ ] def ) { try { final long [ ] result = getLongArray ( key ) ; return result != null ? result : def ; } catch ( final NumberFormatException nfe ) { return def ; } }
Gets the prefixed key and parse it to an long[]<br>
Each comma-separated list can be used. If the key couldn't get found, the
default will be used.

@param key
the key
@param def
default value

@return long[]