Abhishek Keshri :
Fact 1:
Java does not support multiple inheritance.
Fact 2:
Object is a superclass of all other classes
If I have a class Parent and a class Child which is inheriting the class Parent:
class Parent {
}
class Child extends Parent {
}
In this case, how will the class Child inherit the Object class, if Java does not support multiple inheritance?
How is the relationship between these three defined?
Option 1:
Option 2:
Max Vollmer :
It's Option 2. If you define a superclass, that will be the immediate superclass of your class. If you don't define one, Object will be the immediate superclass.
class Parent {
}
class Child extends Parent {
}
is equivalent to
class Parent extends Object {
}
class Child extends Parent {
}
So, while Object is the superclass of all classes, there might be some steps in the class hierarchy before you get to Object. It's not the immediate superclass of all classes.