Question 1

A serialized object is ________.

Accepted Answer

A)  an object represented by XML that includes the object's data. 
B)  an object in memory that has been recreated from data in a file 
C)  a standard output stream object used to convert objects in code to data in a file 
D)  None of the above. 
A)  an object represented by XML that includes the object's data. 
B)  an object in memory that has been recreated from data in a file 
C)  a standard output stream object used to convert objects in code to data in a file 
D)  None of the above.

Question 2

How do methods setIn, setOut and setErr affect the standard input, output and error streams?

Accepted Answer

A)  They output data to the standard input, output and error streams. 
B)  They provide the only way to access the standard input, output and error streams. 
C)  They redirect the standard input, output and error streams. 
D)  They empty the standard input, output and error streams. 
A)  They output data to the standard input, output and error streams. 
B)  They provide the only way to access the standard input, output and error streams. 
C)  They redirect the standard input, output and error streams. 
D)  They empty the standard input, output and error streams.

Question 3

Which statement regarding Java files is false?

Accepted Answer

A)  Java imposes no structure on a file. 
B)  Notions like "record" do not exist in Java files. 
C)  The programmer must structure files to meet the requirements of applications. 
D)  Records in a Java sequential file are stored in order by record key. 
A)  Java imposes no structure on a file. 
B)  Notions like "record" do not exist in Java files. 
C)  The programmer must structure files to meet the requirements of applications. 
D)  Records in a Java sequential file are stored in order by record key.

Question 4

Files static method ________ receives a Path and returns a boolean indicating whether that Path represents a directory on disk.

Accepted Answer

A)  isDiskDirectory 
B)  isDirectory 
C)  isFileDirectory 
D)  isPath 
A)  isDiskDirectory 
B)  isDirectory 
C)  isFileDirectory 
D)  isPath

Question 5

JAXB's static method ________ serialize objects as XML.

Accepted Answer

A)  toXML 
B)  serialize 
C)  marshal 
D)  None of the above 
A)  toXML 
B)  serialize 
C)  marshal 
D)  None of the above

Question 6

Which of the following statements is false?

Accepted Answer

A)  A DirectoryStream enables a program to iterate through the contents of a directory. 
B)  Character-based input and output can be performed with classes Scanner and Formatter. 
C)  A relative path contains all the directories, starting with the root directory, that lead to a specific file or directory. 
D)  Every file or directory on a disk drive has the same root directory in its path. 
A)  A DirectoryStream enables a program to iterate through the contents of a directory. 
B)  Character-based input and output can be performed with classes Scanner and Formatter. 
C)  A relative path contains all the directories, starting with the root directory, that lead to a specific file or directory. 
D)  Every file or directory on a disk drive has the same root directory in its path.

Question 7

The annotation ________ indicates that a private instance variable should be serialized.

Accepted Answer

A)  @XMLElement 
B)  @Element 
C)  @Marshal 
D)  @Serialize 
A)  @XMLElement 
B)  @Element 
C)  @Marshal 
D)  @Serialize

Question 8

Which of the following statements is false?

Accepted Answer

A)  With a BufferedOutputStream each output operation is directed to a buffer large enough to hold the data of many output operations. Transfer to the output device is performed in one large physical output operation when the buffer fills. 
B)  With a BufferedOutputStream, a partially filled buffer can be forced out to the device at any time by invoking the stream object's force method. 
C)  With a BufferedInputStream, many "logical" chunks of data from a file are read as one large physical input operation into a memory buffer. 
D)  With a BufferedInputStream, as a program requests data, it's taken from the buffer. When the buffer is empty, the next actual physical input operation is performed. 
A)  With a BufferedOutputStream each output operation is directed to a buffer large enough to hold the data of many output operations. Transfer to the output device is performed in one large physical output operation when the buffer fills. 
B)  With a BufferedOutputStream, a partially filled buffer can be forced out to the device at any time by invoking the stream object's force method. 
C)  With a BufferedInputStream, many "logical" chunks of data from a file are read as one large physical input operation into a memory buffer. 
D)  With a BufferedInputStream, as a program requests data, it's taken from the buffer. When the buffer is empty, the next actual physical input operation is performed.

Question 9

JavaFX classes ________ and ________ (package javafx.stage) display dialogs that enable the user to select a file or directory, respectively.

Accepted Answer

A)  Files, Directories 
B)  FileChooser, DirectoryChooser 
C)  FileSelector, DirectorySelector 
D)  None of the above. 
A)  Files, Directories 
B)  FileChooser, DirectoryChooser 
C)  FileSelector, DirectorySelector 
D)  None of the above.

Question 10

Which of the following classes is not used for file input?

Accepted Answer

A)  FileInputStream 
B)  FileReader 
C)  ObjectInputStream 
D)  Formatter 
A)  FileInputStream 
B)  FileReader 
C)  ObjectInputStream 
D)  Formatter

A serialized object is ________.

How do methods setIn, setOut and setErr affect the standard input, output and error streams?

Which statement regarding Java files is false?

Files static method ________ receives a Path and returns a boolean indicating whether that Path represents a directory on disk.

JAXB's static method ________ serialize objects as XML.

Which of the following statements is false?

The annotation ________ indicates that a private instance variable should be serialized.

Which of the following statements is false?

JavaFX classes and (package javafx.stage) display dialogs that enable the user to select a file or directory, respectively.

Which of the following classes is not used for file input?

Introduction to Computers, the Internet and Java

Introduction to Java Applications; Inputoutput and Operators

Introduction to Classes, Objects, Methods and Strings

Control Statements: Assignment, and Operators

Control Statements: Logical Operators

Methods: a Deeper Look

Arrays and Arraylists

Classes and Objects: a Deeper Look

Object-Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism and Interfaces

Exception Handling: a Deeper Look

Javafx Graphical User Interfaces

Javafx Gui

Strings, Characters and Regular Expressions

Generic Collections

Lambdas and Streams

Recursion

Searching, Sorting and Big O

Generic Classes and Methods: a Deeper Look

Custom Generic Data Structures

Concurrency

Accessing Databases With Jdbc

Swing Gui Components

Graphics and Java 2d

Networking

Java Persistence Api Jpa

Javaserver Faces Web Apps

Javaserver Faces Web Apps

Swing Gui Components

Filters

Exam 15: Files, Inputoutput Streams, Nio and Xml Serialization

A serialized object is ________.

How do methods setIn, setOut and setErr affect the standard input, output and error streams?

Which statement regarding Java files is false?

Files static method ________ receives a Path and returns a boolean indicating whether that Path represents a directory on disk.

JAXB's static method ________ serialize objects as XML.

Which of the following statements is false?

The annotation ________ indicates that a private instance variable should be serialized.

Which of the following statements is false?

JavaFX classes ________ and ________ (package javafx.stage) display dialogs that enable the user to select a file or directory, respectively.

Which of the following classes is not used for file input?

Introduction to Computers, the Internet and Java

Introduction to Java Applications; Inputoutput and Operators

Introduction to Classes, Objects, Methods and Strings

Control Statements: Assignment, and Operators

Control Statements: Logical Operators

Methods: a Deeper Look

Arrays and Arraylists

Classes and Objects: a Deeper Look

Object-Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism and Interfaces

Exception Handling: a Deeper Look

Javafx Graphical User Interfaces

Javafx Gui

Strings, Characters and Regular Expressions

Generic Collections

Lambdas and Streams

Recursion

Searching, Sorting and Big O

Generic Classes and Methods: a Deeper Look

Custom Generic Data Structures

Concurrency

Accessing Databases With Jdbc

Swing Gui Components

Graphics and Java 2d

Networking

Java Persistence Api Jpa

Javaserver Faces Web Apps

Javaserver Faces Web Apps

Swing Gui Components

Filters

JavaFX classes and (package javafx.stage) display dialogs that enable the user to select a file or directory, respectively.