isobel's code

ChargeCalculator.java

MailItem.java

Robot.java

Simulation.java

src/automail/Automail.java

src/automail/MailPool.java

src/exceptions/ExcessiveDeliveryException.java

src/exceptions/ItemTooHeavyException.java

src/exceptions/MailAlreadyDeliveredException.java

src/simulation/Building.java

src/simulation/Clock.java

src/simulation/IMailDelivery.java

src/simulation/MailGenerator.java