Question 1

A constructor is a method that

Accepted Answer

A)  returns an object of the class. 
B)  never receives any arguments. 
C)  with the name ClassName.constructor. 
D)  performs initialization or setup operations. 
A)  returns an object of the class. 
B)  never receives any arguments. 
C)  with the name ClassName.constructor. 
D)  performs initialization or setup operations. D

Question 2

Which of the following is not involved in finding the classes when developing an object-oriented application?

Accepted Answer

A)  Describe the problem domain. 
B)  Identify all the nouns. 
C)  Write the code. 
D)  Refine the list of nouns to include only those that are relevant to the problem. 
A)  Describe the problem domain. 
B)  Identify all the nouns. 
C)  Write the code. 
D)  Refine the list of nouns to include only those that are relevant to the problem. C

Question 3

In a UML diagram to indicate the data type of a variable enter

Accepted Answer

A)  the variable name followed by the data type 
B)  the variable name followed by a colon and the data type 
C)  the class name followed by the variable name followed by the data type 
D)  the data type followed by the variable name 
A)  the variable name followed by the data type 
B)  the variable name followed by a colon and the data type 
C)  the class name followed by the variable name followed by the data type 
D)  the data type followed by the variable name B

Question 4

Quite often you have to use this statement to make a group of classes available to a program.

Accepted Answer

A)  import 
B)  use 
C)  link 
D)  assume 
A)  import 
B)  use 
C)  link 
D)  assume

Question 5

Another term for an object of a class is

Accepted Answer

A)  access specifier 
B)  instance 
C)  member 
D)  method 
A)  access specifier 
B)  instance 
C)  member 
D)  method

Question 6

The scope of a private instance field is

Accepted Answer

A)  the instance methods of the same class 
B)  inside the class,but not inside any method 
C)  inside the parentheses of a method header 
D)  the method in which they are defined 
A)  the instance methods of the same class 
B)  inside the class,but not inside any method 
C)  inside the parentheses of a method header 
D)  the method in which they are defined

Question 7

Class objects normally have __________ that perform useful operations on their data,but primitive variables do not.

Accepted Answer

A)  fields 
B)  instances 
C)  methods 
D)  relationships 
A)  fields 
B)  instances 
C)  methods 
D)  relationships

Question 8

Look at the following statement. import java.util.Scanner;
This is an example of

Accepted Answer

A)  a wildcard import 
B)  an explicit import 
C)  unconditional import 
D)  conditional import 
A)  a wildcard import 
B)  an explicit import 
C)  unconditional import 
D)  conditional import

Question 9

An access specifier indicates how the class may be accessed.

Accepted Answer

A) True 
 B)False

Question 10

Two or more methods in a class may have the same name as long as

Accepted Answer

A)  they have different return types 
B)  they have different parameter lists 
C)  they have different return types,but the same parameter list 
D)  you cannot have two methods with the same name 
A)  they have different return types 
B)  they have different parameter lists 
C)  they have different return types,but the same parameter list 
D)  you cannot have two methods with the same name

Question 11

Shadowing is the term used to describe where the field name is hidden by the name of a local or parameter variable.

Accepted Answer

A) True 
 B)False

Question 12

In the cookie cutter metaphor,think of the ________ as a cookie cutter and ________ as the cookies.

Accepted Answer

A)  object;classes 
B)  class;objects 
C)  class;fields 
D)  attribute;methods 
A)  object;classes 
B)  class;objects 
C)  class;fields 
D)  attribute;methods

Question 13

Look at the following statement. import java.util.*;
This is an example of

Accepted Answer

A)  a wildcard import 
B)  an explicit import 
C)  unconditional import 
D)  conditional import 
A)  a wildcard import 
B)  an explicit import 
C)  unconditional import 
D)  conditional import

Question 14

A UML diagram does not contain

Accepted Answer

A)  the class name. 
B)  the method names. 
C)  the field names. 
D)  object names 
A)  the class name. 
B)  the method names. 
C)  the field names. 
D)  object names

Question 15

The public access specifier for a field indicates that the attribute may not be accessed by statements outside the class.

Accepted Answer

A) True 
 B)False

Question 16

One or more objects may be created from a(n)

Accepted Answer

A)  field 
B)  class 
C)  method 
D)  instance 
A)  field 
B)  class 
C)  method 
D)  instance

Question 17

This is a group of related classes.

Accepted Answer

A)  archive 
B)  package 
C)  collection 
D)  attachment 
A)  archive 
B)  package 
C)  collection 
D)  attachment

Question 18

When a local variable in an instance method has the same name as an instance field,the instance field hides the local variable.

Accepted Answer

A) True 
 B)False

Question 19

Methods that operate on an object's fields are called

Accepted Answer

A)  instance variables 
B)  instance methods 
C)  public methods 
D)  private methods 
A)  instance variables 
B)  instance methods 
C)  public methods 
D)  private methods

Question 20

Instance methods should be declared static.

Accepted Answer

A) True 
 B)False

Exam 6: A First Look at Classes

A constructor is a method that

Which of the following is not involved in finding the classes when developing an object-oriented application?

In a UML diagram to indicate the data type of a variable enter

Quite often you have to use this statement to make a group of classes available to a program.

Another term for an object of a class is

The scope of a private instance field is

Class objects normally have __________ that perform useful operations on their data,but primitive variables do not.

Look at the following statement. import java.util.Scanner; This is an example of

An access specifier indicates how the class may be accessed.

Two or more methods in a class may have the same name as long as

Shadowing is the term used to describe where the field name is hidden by the name of a local or parameter variable.

In the cookie cutter metaphor,think of the ________ as a cookie cutter and ________ as the cookies.

Look at the following statement. import java.util.*; This is an example of

A UML diagram does not contain

The public access specifier for a field indicates that the attribute may not be accessed by statements outside the class.

One or more objects may be created from a(n)

This is a group of related classes.

When a local variable in an instance method has the same name as an instance field,the instance field hides the local variable.

Methods that operate on an object's fields are called

Instance methods should be declared static.

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

Methods

A First Look at Gui Applications

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File Io

Advanced Gui Applications

Applets and More

Recursion

Sorting, Searching, and Algorithm Analysis

Generics

Collections

Array-Based Lists

Linked Lists

Stacks and Queues

Binary Trees, Avl Trees, and Priority Queues

Filters

In the cookie cutter metaphor,think of the as a cookie cutter and as the cookies.