Inheritance in Object-Oriented Programming

Which of the following is the correct way to define a subclass 'Dog' that inherits from a superclass 'Animal' in Java?

Consider classes A, B, and C. A is the superclass of both B and C. If class D attempts to inherit from both B and C, and both B and C have a method with the same name, what problem might arise?

Given the following code snippet, which class is the superclass?

java
class Vehicle {}
class Car extends Vehicle {}

What is the correct syntax to declare class Car as a subclass of class Vehicle?

Consider a scenario with classes 'Shape', 'TwoDimensionalShape', and 'Circle'. 'TwoDimensionalShape' inherits from 'Shape', and 'Circle' inherits from 'TwoDimensionalShape'. Which is the most appropriate superclass for 'TwoDimensionalShape'?

Fill in the blank to correctly establish inheritance: class SportsCar ____ Car {}

Given the following class hierarchy, write the class headers for classes A, B, and C, where A is the superclass of B, and B is the superclass of C.

Why does Java not allow a class to inherit from multiple superclasses directly?