An electronic faucet has a controller configured to selectively open and close a valve to provide fluid flow through the valve and a passageway of the faucet. A system is disclosed that is useful in performing the method. The first and second photo sensing means in adjacent pairs of LDEs are coupled in parallel in the column direction through second turn-on means. Each of the designated heap portions can be designated to store only a particular Java logical component A designated heap portion can be implemented as a memory pool.