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Computer Science parent class. In Figure 4.4, Class A is classes B and C inheriting from the
shown as the parent class, while Class B parent class A.
is portrayed as the child class inheriting
Class A
properties and behavior from its parent
class.
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Class A Class B Class C
Figure 4.6: Hierarchical inheritance

Class B
(iv) Hybrid inheritance
Figure 4.4: Single inheritance Hybrid inheritance is formed by
combining multiple inheritance and
(ii) Multilevel inheritance multilevel inheritance, typically using
Multilevel inheritance happens when a interfaces due to Java’s lack of support
class inherits from another class, which in for multiple inheritance. In Figure 4.7,
turn inherits from another class, forming a Class A acts as the parent class for both
chain of inheritance. In Figure 4.5, Class C classes B and C. Classes B and C, in
inherits from Class B, and Class B inherits turn, serve as parent classes for class D,
from Class A. This means that Class C which is the sole child class of both B
inherits both the traits of Class B and and C.
the properties and behavior of Class A.
Thus, Class C automatically acquires the Class A
properties and methods of both Class A
and Class B. Class B Class C

Class A
Class D

Class B Figure 4.7: Hierarchical inheritance

Exercise 4.3
Class C 1. Analyse the statement that,
“Inheritance is the process by
Figure 4.5: Multilevel inheritance
which objects of one class acquire
the properties of objects of another
(iii) Hierarchical inheritance class.”
A class is considered to have hierarchical
inheritance when it serves as the parent 2. How does multilevel inheritance
class for multiple child classes or differ from single inheritance?
subclasses. Figure 4.6, shows the child Explain the potential benefits and

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Computer Science Form 5.indd 216 23/07/2024 12:33