Message Sending

• In the majority of object oriented software systems a number of objects will work together to carry out the functionality of the system
• The objects in the system do this by sending messages to each other
• Think of a television and its remote control. The remote is an object which can be used to send a message to the television object to turn itself on. It can also send a message to the television object to turn itself off etc
• Think about the interface the TV object presents to the remote. Is it the same interface that is presented to someone using the TV without  a remote?