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Hierarchical Inheritance in Dart Programming
Hierarchical inheritance is the case of inheritance when two classes inherit a single class.
The syntactic representation of a hierarchical inheritance looks something like this −
class A {}
class B extends A {}
class C extends A {}In the above syntactic representation, we can see that two classes, namely B and C are inheriting (or extending) class A.
Example
Let's consider an example of hierarchical inheritance in dart. Consider the example shown below −
class Parent{
void printName(){
print("Inside class Parent");
}
}
class Daughter extends Parent{
void age(age){
print("Her age is: ${age}");
}
}
class Son extends Parent{
void name(name){
print("My name is: ${name}");
}
}
void main(){
Daughter d = new Daughter();
d.printName();
d.age(23);
Son s = new Son();
s.printName();
s.name("Tuts");
}In the above example, we have two classes, namely Son and Daughter that are extending the class named Parent.
Output
Inside class Parent Her age is: 23 Inside class Parent My name is: Tuts
Updated on: 21-May-2021
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