Question 1

A class's responsibilities include

Accepted Answer

A)  the things a class is responsible for knowing. 
B)  the things a class is responsible for doing. 
C)  both A and B 
D)  neither A nor B 
A)  the things a class is responsible for knowing. 
B)  the things a class is responsible for doing. 
C)  both A and B 
D)  neither A nor B C

Question 2

In the blueprint/house analogy, think of a class as a blueprint that describes a house and ________ as instances of the house built from the blueprint.

Accepted Answer

A)  methods 
B)  fields 
C)  objects 
D)  attributes 
A)  methods 
B)  fields 
C)  objects 
D)  attributes C

Question 3

The java.lang package is automatically imported into all Java programs.

Accepted Answer

A) True 
 B)False  True

Question 4

A group of related classes is called a(n)

Accepted Answer

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

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

What does the following UML diagram entry mean? + setHeight(h : double) : void

Accepted Answer

A)  a public method with a parameter of data type double that does not return a value 
B)  a private field called Height that is a double data type 
C)  a private method with no parameters that returns a double data type 
D)  a public field called Height that is a double data type 
A)  a public method with a parameter of data type double that does not return a value 
B)  a private field called Height that is a double data type 
C)  a private method with no parameters that returns a double data type 
D)  a public field called Height that is a double data type

Question 7

A constructor is a method that

Accepted Answer

A)  returns an object of the class. 
B)  never receives any arguments. 
C)  performs initialization or setup operations. 
D)  removes the object from memory. 
A)  returns an object of the class. 
B)  never receives any arguments. 
C)  performs initialization or setup operations. 
D)  removes the object from memory.

Question 8

The term "no-arg constructor" is applied to any constructor that does not accept arguments.

Accepted Answer

A) True 
 B)False

Question 9

In UML diagrams, what symbol indicates that a member is public?

Accepted Answer

A)  - 
B)  * 
C)  # 
D)  + 
A)  - 
B)  * 
C)  # 
D)  +

Question 10

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

Accepted Answer

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

Question 11

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

Accepted Answer

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

Question 12

To indicate the data type of a variable in a UML diagram, you specify

Accepted Answer

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

Question 13

A method that stores a value in a class's field or in some other way changed the value of a field is known as a mutator method.

Accepted Answer

A) True 
 B)False

Question 14

You should not define a class field that is dependent upon the values of other class fields

Accepted Answer

A)  in order to keep it current. 
B)  because it is redundant. 
C)  in order to avoid having stale data. 
D)  because it should be defined in another class. 
A)  in order to keep it current. 
B)  because it is redundant. 
C)  in order to avoid having stale data. 
D)  because it should be defined in another class.

Question 15

If you do not provide initialization values for a class's numeric fields, they will

Accepted Answer

A)  cause a runtime error. 
B)  contain an unknown value. 
C)  be automatically initialized with 0. 
D)  cause a compiler error. 
A)  cause a runtime error. 
B)  contain an unknown value. 
C)  be automatically initialized with 0. 
D)  cause a compiler error.

Question 16

A method that gets a value from a class's field but does not change it is known as a mutator method.

Accepted Answer

A) True 
 B)False

Question 17

A method

Accepted Answer

A)  may have zero or more parameter variables. 
B)  never has parameter variables. 
C)  must have at least two parameter variables. 
D)  may have only one parameter variables. 
A)  may have zero or more parameter variables. 
B)  never has parameter variables. 
C)  must have at least two parameter variables. 
D)  may have only one parameter variables.

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

The term "default constructor" is applied to the first constructor written by the author of the class.

Accepted Answer

A) True 
 B)False

Question 20

When an object is created, the attributes associated with the object are called

Accepted Answer

A)  instance fields. 
B)  class instances. 
C)  instance methods. 
D)  fixed attributes. 
A)  instance fields. 
B)  class instances. 
C)  instance methods. 
D)  fixed attributes.

A class's responsibilities include

In the blueprint/house analogy, think of a class as a blueprint that describes a house and ________ as instances of the house built from the blueprint.

The java.lang package is automatically imported into all Java programs.

A group of related classes is called a(n)

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

What does the following UML diagram entry mean? + setHeight(h : double) : void

A constructor is a method that

The term "no-arg constructor" is applied to any constructor that does not accept arguments.

In UML diagrams, what symbol indicates that a member is public?

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

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

To indicate the data type of a variable in a UML diagram, you specify

A method that stores a value in a class's field or in some other way changed the value of a field is known as a mutator method.

You should not define a class field that is dependent upon the values of other class fields

If you do not provide initialization values for a class's numeric fields, they will

A method that gets a value from a class's field but does not change it is known as a mutator method.

A method

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

The term "default constructor" is applied to the first constructor written by the author of the class.

When an object is created, the attributes associated with the object are called

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

A Second Look at Classes and Objects

Arrays and the ArrayList Class

Text Processing and Wrapper Classes

Inheritance

Exceptions and Advanced File I/O

GUI Applications–Part 1

GUI Applications–Part 2

Applets and More

Creating GUI Applications with JavaFX

Recursion

Databases

Filters

Exam 3: A First Look at Classes and Objects

A class's responsibilities include

In the blueprint/house analogy, think of a class as a blueprint that describes a house and ________ as instances of the house built from the blueprint.

The java.lang package is automatically imported into all Java programs.

A group of related classes is called a(n)

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

What does the following UML diagram entry mean? + setHeight(h : double) : void

A constructor is a method that

The term "no-arg constructor" is applied to any constructor that does not accept arguments.

In UML diagrams, what symbol indicates that a member is public?

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

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

To indicate the data type of a variable in a UML diagram, you specify

A method that stores a value in a class's field or in some other way changed the value of a field is known as a mutator method.

You should not define a class field that is dependent upon the values of other class fields

If you do not provide initialization values for a class's numeric fields, they will

A method that gets a value from a class's field but does not change it is known as a mutator method.

A method

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

The term "default constructor" is applied to the first constructor written by the author of the class.

When an object is created, the attributes associated with the object are called

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

A Second Look at Classes and Objects

Arrays and the ArrayList Class

Text Processing and Wrapper Classes

Inheritance

Exceptions and Advanced File I/O

GUI Applications–Part 1

GUI Applications–Part 2

Applets and More

Creating GUI Applications with JavaFX

Recursion

Databases

Filters