|
|
|
Of course, you can again
inherit from a subclass, making this class the superclass of the new
subclass. This leads to a hierarchy of superclass/subclass relationships.
|
|
If you draw this hierarchy
you get an inheritance graph.
|
|
In the literature you also
find illustrations where the arrowed lines are used just the other way
around. The direction in which the arrowed line is used, depends on
|
|
how the corresponding author
has decided to understand it.
|
|
In this tutorial the arrowed
line is always directed towards the superclass.
|
|
In the further discussion an
unmarked arrowed line indicates “inherit-from''.
|