Message Sending

In a system, objects work together. They do this by sending messagew to one another. One object sends another a message to perform an operation, and the receiving object performs that operation.
Think of a TV remote control. You could get up and do it yourself at the TV (but you'd be drummed out of the couch potato society). The remote is another “interface” for the TV operations.

In a system, objects work together. They do this by sending messagew to one another. One object sends another a message to perform an operation, and the receiving object performs that operation.