CP2003 - Principles of Programming Languages
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Java GUIs I
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Graphical User Interfaces (GUIs)
One of the cornerstones of the Macintosh philosophy is that people should tell computers what to do and not the other way around.
Program centric
programming:
Program is in charge.
Program prompts, user responds.
Once an action is selected, user must complete action in prescribed manner.
The flow of control is fixed.
User centric
programming:
Program is
not
in charge.
User makes mistakes. Wants to repeat certain action.
User wants to skip an action.
User changes his/her mind.
User behaves like an erratic, emotional, irrational
human being
.
The flow of control is
not
fixed.
Marc Gysin, James Cook University.
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