Question A

If a class has an abstract method, which of the following statements is NOT true?

	All non-abstract subclasses of this class must implement this method.
	You can inherit from this class.

	You can have an object reference whose type is this class.
	You can construct an object from this class.

Question B

Which of the following statements about classes is true?

	You can create subclasses from a class declared with the keyword final.
	You can override methods in a class declared with the keyword final.

	You can create an object from a class declared with the keyword final.
	You can extend a class declared with the keyword final.

Question C

Consider the following class hierarchy:

public class Vehicle {

private String type;

public Vehicle(String type) {

this.type = type;

System.out.print("Vehicle ");

}

public String displayInfo() {

return type;

}

}

public class LandVehicle extends Vehicle {

public LandVehicle(String type) {

super(type);

System.out.print("Land ");

}

}

public class Auto extends LandVehicle {

public Auto(String type) {

super(type);

System.out.print("Auto ");

}

}

When an object of type Auto is constructed, what will be printed by the constructors from this inheritance hierarchy?

	Auto Land Vehicle
	Vehicle Land Auto

	Land Auto Vehicle
	Auto

Question D

What is a class called that represents the most general entity in an inheritance hierarchy?

	Inheritance class
	Superclass

	Subclass
	Default class

Question E

All rodents are mammals and all canines are mammals. No canines are rodents and no rodents are canines. What hierarchy best captures this information?

	Mammal is a superclass of Rodent and Canine
	Rodent is a superclass of Mammal and Canine is a superclass of Mammal

	Mammal is a superclass of Canine and Canine is a superclass of Rodent
	Mammal is a superclass of Rodent and Rodent is a superclass of Canine