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Java Java Data Structures - Retired Getting There Object Inheritance

Aditya Puri
Aditya Puri
1,080 Points
Posted by Aditya Puri
Aditya Puri
1,080 Points

What does "type" mean?

0:40 "All classes in JAVA inherit from a special type called object."

What does he mean by the word "type" here? Does type mean a class?

1 Answer

Tom Lawrence
Tom Lawrence
8,685 Points

Yes, Objects are user defined types. You also have primitive types (like int).

If you made a vehicle class, and created an instance of it called ford, ford is of type Vehicle. If you then created another class called Car, with inherits from Vehicle, your Car class have everything a Vehicle type has, plus any additional stuff within Car.

Car will inherit Vehicle, Vehicle inherits Object, (so a Car is still inheriting from Object through Vehicle though this time as all classes implicitly extend Object if they have no other superclass)