previous |
start |
next
Coupling
- A class depends on another class if one
of its member functions uses an object of the other class in some
way.
- The "collaborators" column of the CRC cards
tells you which classes depend on another.
- In a UML class diagram, you denote dependency
by a dashed line with an open arrow tip that points to the
dependent class.
- A Purse class depends on a
Coin class, because a purse contains coins.
- The Coin class does not depend on the
Purse class because the Coin class makes no use
of the Purse class.
previous |
start |
next