Labels:dialog box | monitor | sky | web site | window OCR: Object- Oriented Programming But... an object's state s private! Objects respond to tmessages change state return value EXAMPLES: Compute age" Change employer to ..." The Key Ideas: Each real- -world entity is modeled by an object within the computer All work done by sending messa! iges from object to object. HArTT Porter 2001 messages PLIOM HarTy
