Deck 9: Advanced Java Topics

Question 1

Containment is another name for a(n)______ relationship.

A)is-a
B)has-a
C)has-many
D)similar-to

Answer 1

B

Question 2

The class which inherits the members of another class is known as the ______.

A)superclass
B)derived class
C)base class
D)abstract class

Answer 2

B

Question 3

A subclass inherits all of the following members of its superclass EXCEPT ______.

A)public methods
B)data fields
C)constructors
D)protected methods

Answer 3

C

Question 4

Inheritance should only be used when a(n)______ relationship exists between the superclass and the subclass.

A)is-a
B)has-a
C)has-many
D)similar-to

Question 5

The ______ access modifier hides the members of a class from the class's clients but makes them available to a subclass and to another class within the same package.

A)public
B)protected
C)private
D)package access

Question 6

______ enables the reuse of existing classes.

A)Encapsulation
B)Inheritance
C)Polymorphism
D)Simulation

Question 7

______ is the ability of a class to derive properties from a previously defined class.

A)Encapsulation
B)Simulation
C)Inheritance
D)Polymorphism

Question 8

A class's ______ members can only be used by its own methods.

A)public
B)protected
C)private
D)package access

Question 9

A class's ______ members are available to instances of all classes.

A)public
B)protected
C)private
D)package access

Question 10

The keyword ______ is used in the class declaration of a subclass to indicate its superclass.

A)inherits
B)extends
C)implements
D)super

Question 11

Dynamic binding is also known as ______.

A)early binding
B)late binding
C)package binding
D)inheritance binding

Question 12

A method in a subclass is said to ______ an inherited method if it has the same method declarations as the inherited method.

A)copy
B)override
C)overload
D)cancel

Question 13

Java packages provide a way to group related ______ together.

A)objects
B)data structures
C)variables
D)classes

Question 14

In a class within a package,the keyword ______ must appear in front of the class keyword to make the class available to clients of the package.

A)open
B)public
C)protected
D)package

Question 15

A superclass method can be accessed by a subclass,even though it has been overridden by the subclass,by using the ______ reference.

A)super
B)final
C)static
D)new

Question 16

The class from which another class is derived is known as the ______.

A)base class
B)subclass
C)child class
D)final class

Question 17

Which of the following is NOT true about packages?

A)a package can contain other packages
B)a package's name must be the same as the directory that contains all of the classes in the package
C)a Java source file that is part of a named package must contain a statement at the top of the file that contains the keyword package and the name of the package
D)all classes in a package are available to clients of the package

Question 18

A subclass is said to be a ______ of its superclass.

A)descendant
B)relative
C)leaf
D)mirror

Question 19

The constructor of a subclass can call the constructor of the superclass by using the ______ reference.

A)extends
B)new
C)super
D)import

Question 20

In general,a class's data fields should be declared as ______.

A)public
B)protected
C)private
D)package access

Question 21

A package cannot contain other packages.

Question 22

An instance of a subclass can access the protected members of the superclass.

Question 23

A subclass can contain its own version of an inherited method.

Question 24

A base class is a class that inherits the members of another class.

Question 25

Methods declared as ______ use static binding.

A)protected
B)final
C)public
D)abstract

Question 26

Inheritance should not be used to implement a has-a relationship.

Question 27

A subclass that fails to implement all of the abstract methods of its superclass must be declared as a(n)______ class.

A)abstract
B)static
C)final
D)private

Question 28

Which of the following is true about an abstract class?

A)it can be instantiated
B)it can contain zero or more abstract methods
C)it cannot be inherited by other classes
D)it cannot contain data fields

Question 29

A(n)______ is a class that is used to provide access to another class that contains many objects.

A)interface
B)abstract class
C)package
D)iterator

Question 30

An instance of a superclass can be used anywhere an instance of its subclass is expected.

Question 31

A method that has the same name but a different set of parameters as an existing method is said to ______ the original method.

A)bind
B)cancel
C)override
D)overload

Question 32

A package and the directory that contains all the classes in the package must have the same name.

Question 33

A subclass cannot add new members to those it inherits from the superclass.

Question 34

If the field modifier ______ is specified in a method definition,the method cannot be overridden by a subclass.

A)public
B)protected
C)final
D)abstract

Question 35

A superclass's private data fields can be revised by one of its subclasses.

Question 36

A Java ______ specifies behaviors that are common to a group of classes.

A)package
B)final class
C)interface
D)subclass

Question 37

If a method definition in a superclass has the field modifier ______,a subclass is required to override the method.

A)static
B)protected
C)final
D)abstract

Question 38

______ is the ability of a variable name to represent,during program execution,instances of different but related classes that descend from a common superclass.

A)Inheritance
B)Containment
C)Polymorphism
D)Encapsulation

Question 39

Static binding is also known as ______.

A)early binding
B)late binding
C)package binding
D)inheritance binding

Question 40

Clients of a class can directly access the protected members of that class.

Question 41

What is method overloading?

Question 42

What are some of the advantages of using an object-oriented approach to the development of a software?

Question 43

What is an access modifier?

Question 44

What kind of relationship exists between a superclass and a subclass?

Question 45

What are the two basic kinds of relationships among classes?

Question 46

What is an advantage to defining an ADT that uses a generic data type?

Question 47

How can a package be created in Java?

Question 48

Name 3 important operations that an iterator object can perform.

Question 49

When is a method in a subclass said to override a method in the superclass?

Question 50

What is meant by object type compatibility?

Question 51

Is it legal for a subclass of an abstract class not to implement all of the methods it inherits? Briefly explain.

Question 52

What is containment?

Question 53

What is meant by static binding?

Question 54

What is meant by dynamic binding?

Question 55

Name two things that an abstract class may include that an interface would not.

Question 56

Can the object type of an argument in the call to a method be difference from the object type of the corresponding formal parameter? Explain.

Question 57

What is an abstract class?

Question 58

What does the reference super represent?

Question 59

What is a subinterface?

Question 60

What kind of methods are appropriate to implement in an abstract class?