Exam 9: Object-Oriented Programming: Inheritance

Consider the classes below, declared in the same file: class A { Int a; Public A() { A = 7; } } Class B extends A { Int b; Public B() { B = 8; } } Which of the statements below is false?

Which of the following statements is false?

Every class in Java, except ________, extends an existing class.

When overriding a superclass method and calling the superclass version from the subclass method, failure to prefix the superclass method name with the keyword super and a dot (.) in the superclass method call causes ________.

Private fields of a superclass can be accessed in a subclass

An advantage of inheritance is that:

Using the protected keyword also gives a member:

Which superclass members are inherited by all subclasses of that superclass?

Inheritance is also known as the

Which statement is true when a superclass has protected instance variables?

The default implementation of method clone of Object performs a ________.

To avoid duplicating code, use ________, rather than ________.

Which of the following is the superclass constructor call syntax?

Which of the following is not a superclass/subclass relationship?

Which of the following statements is false?

The default equals implementation of class Object determines:

When a subclass constructor calls its superclass constructor, what happens if the superclass's constructor does not assign a value to an instance variable?

Superclass methods with this level of access cannot be called from subclasses.

Which of the following keywords allows a subclass to access a superclass method even when the subclass has overridden the superclass method?

Overriding a method differs from overloading a method because: