Question 1

Which of the following statements is false?

Accepted Answer

A)  A Path represents the location of a file or directory. 
B)  Path objects open files and provide file-processing capabilities. 
C)  Class Paths is used to get a Path object representing a file or directory location. 
D)  The static method get of class Paths converts a String representing a file's or directory's location into a Path object. 
A)  A Path represents the location of a file or directory. 
B)  Path objects open files and provide file-processing capabilities. 
C)  Class Paths is used to get a Path object representing a file or directory location. 
D)  The static method get of class Paths converts a String representing a file's or directory's location into a Path object.

Question 2

Which JFileChooser method specifies what users can select in the dialog?

Accepted Answer

A)  setFileSelectionMode 
B)  setSelectionMode 
C)  showOpenDialog 
D)  None of the above. 
A)  setFileSelectionMode 
B)  setSelectionMode 
C)  showOpenDialog 
D)  None of the above.

Question 3

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 4

Which of the following statements is true?

Accepted Answer

A)  Class Scanner provides the ability to reposition to the beginning of a file with method seek. 
B)  Class Scanner provides the ability to reposition to the beginning of a file with method reposition. 
C)  Class Scanner does not provide the ability to reposition to the beginning of the file. 
D)  If it is necessary to read a sequential file again, the program can simply keep reading-when the end of the file is reached, the Scanner is automatically set to point back to the beginning of the file. 
A)  Class Scanner provides the ability to reposition to the beginning of a file with method seek. 
B)  Class Scanner provides the ability to reposition to the beginning of a file with method reposition. 
C)  Class Scanner does not provide the ability to reposition to the beginning of the file. 
D)  If it is necessary to read a sequential file again, the program can simply keep reading-when the end of the file is reached, the Scanner is automatically set to point back to the beginning of the file.

Question 5

Instance variables that are not to be output with a Serializable object are declared using which keyword?

Accepted Answer

A)  private 
B)  ignoreme 
C)  transient 
D)  persistent 
A)  private 
B)  ignoreme 
C)  transient 
D)  persistent

Question 6

What interface must a class implement to indicate that objects of the class can be output and input as a stream of bytes?

Accepted Answer

A)  Synchronize 
B)  Deserializable 
C)  Serializable 
D)  ObjectOutput 
A)  Synchronize 
B)  Deserializable 
C)  Serializable 
D)  ObjectOutput

Which of the following statements is false?

Which JFileChooser method specifies what users can select in the dialog?

Which of the following statements is false?

Which of the following statements is true?

Instance variables that are not to be output with a Serializable object are declared using which keyword?

What interface must a class implement to indicate that objects of the class can be output and input as a stream of bytes?

Introduction to Computers and Java

Introduction to Java Applications

Control Statements

Control Statements

Methods

Arrays and Arraylists

Introduction to Classes and Objects

Classes and Objects: a Deeper Look

Object Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Exception Handling

Gui Components

Graphics and Java 2D

Fundamentals of Characters and Strings

Generic Collections

Lambdas

Recursion

Searching, Sorting and Big O

Generic Classes and Methods

Custom Generic Data Structures

GUI

Concurrency

Accessing Databases With JDBC

JavaFX

Filters

Exam 15: Files, Streams and Object Serialization

Which of the following statements is false?

Which JFileChooser method specifies what users can select in the dialog?

Which of the following statements is false?

Which of the following statements is true?

Instance variables that are not to be output with a Serializable object are declared using which keyword?

What interface must a class implement to indicate that objects of the class can be output and input as a stream of bytes?

Introduction to Computers and Java

Introduction to Java Applications

Control Statements

Control Statements

Methods

Arrays and Arraylists

Introduction to Classes and Objects

Classes and Objects: a Deeper Look

Object Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Exception Handling

Gui Components

Graphics and Java 2D

Fundamentals of Characters and Strings

Generic Collections

Lambdas

Recursion

Searching, Sorting and Big O

Generic Classes and Methods

Custom Generic Data Structures

GUI

Concurrency

Accessing Databases With JDBC

JavaFX

Filters