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Object Oriented Analysis and Design
Notes
Figure 3.9: Single Inheritance
Shape
Draw ()
Er a s e ( )
Erase ()
Circle Triangle Square
Source: http://vedyadhara.ignou.ac.in/wiki/images/a/aa/B1U1mcs-032.pdf
In multiple inheritances, one class is inherited from more than one class.
Example: Multiple inheritances is shown in Figure 3.10.
Figure 3.10: Multiple Inheritance
Fly Things Run Things
Aeroplane Helicopter Car
Source: http://vedyadhara.ignou.ac.in/wiki/images/a/aa/B1U1mcs-032.pdf
Self Assessment
Fill in the blanks:
10. The notation for ................... is a triangle connecting a super class to its subclasses.
11. ................... is used for sharing attributes and operations using the generalization
relationship.
12. In ................... inheritance, one class is inherited from more than one class.
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