Question 1

Binary files can be handled more efficiently than text files.

Accepted Answer

A) True 
 B)False  True

Question 2

Files whose contents must be handled as sequences of binary digits are called:

Accepted Answer

A) text files 
B) ASCII files 
C) binary files 
D) output files 
A) text files 
B) ASCII files 
C) binary files 
D) output files C

Question 3

Explain what happens when an output file is opened in Java.

Accepted Answer

In Java,when an output stream is connected to a file,the program always starts with an empty file.If the file you are trying to connect to exists,the contents of the file are deleted before the output stream writes new data to the file.If the file you are trying to connect to does not exist,then a new empty file is created.

Question 4

Write a Java statement to create an input stream to the binary file statistics.dat.

Accepted Answer

ObjectInputStream in

Question 5

Write a Java statement to create an input stream to a file named "statistics.dat".

Accepted Answer

Scanner inputStream

Question 6

The methods of the scanner class do not behave the same when reading from a text file as they do when used to read from the keyboard.

Accepted Answer

A) True 
 B)False

Question 7

The method __________ from the File class forces a physical write to the file of any data that is buffered.

Accepted Answer

A) close) 
B) flush) 
C) writeUTF) 
D) writeObject) 
A) close) 
B) flush) 
C) writeUTF) 
D) writeObject)

Question 8

Write a Java statement to create and open an output stream to a file named autos.txt.

Accepted Answer

PrintWriter outputSt

Question 9

The class ObjectInputStream contains all of the following methods except:

Accepted Answer

A) readLine) 
B) readChar) 
C) readObject) 
D) readInt) 
A) readLine) 
B) readChar) 
C) readObject) 
D) readInt)

Question 10

Using BufferedReader to read integers from a file requires the String input to be parsed to an integer type.

Accepted Answer

A) True 
 B)False

Question 11

The class ObjectOutputStream contains all of the following methods except:

Accepted Answer

A) writeInt) 
B) writeChar) 
C) writeDouble) 
D) println) 
A) writeInt) 
B) writeChar) 
C) writeDouble) 
D) println)

Question 12

Write a Java statement that creates a stream that provides read/write access to the file named autos.txt.

Accepted Answer

RandomAccessFile ioS

Question 13

Create try and catch block that opens a file named statistics.txt for output.Writes the integers 24,55,and 76 to the file,and then closes the file.

Accepted Answer

PrintWriter outputStream = null;
try
{
o

Question 14

Every input file and every output file used by your program has only one name which is the same name used by the operating system.

Accepted Answer

A) True 
 B)False

Question 15

A stream is an object that allows for the flow of data between your program and some I/O device or some file.

Accepted Answer

A) True 
 B)False

Question 16

Only the classes provided for file output contain a method named close.

Accepted Answer

A) True 
 B)False

Question 17

An ____________ allows data to flow from your program.

Accepted Answer

A) input stream 
B) output stream 
C) file name 
D) all of the above 
A) input stream 
B) output stream 
C) file name 
D) all of the above

Question 18

The stream that is automatically available to your Java code is:

Accepted Answer

A) System.out 
B) System.in 
C) System.err 
D) all of the above 
A) System.out 
B) System.in 
C) System.err 
D) all of the above

Question 19

When your program is finished writing to a file,it should close the stream connected to that file.

Accepted Answer

A) True 
 B)False

Question 20

Write a complete Java program using a Scanner object that opens a file named autos.txt and displays each line to the screen.

Accepted Answer

import java.util.*;
import java.io.FileR

Binary files can be handled more efficiently than text files.

Files whose contents must be handled as sequences of binary digits are called:

Explain what happens when an output file is opened in Java.

Write a Java statement to create an input stream to the binary file statistics.dat.

Write a Java statement to create an input stream to a file named "statistics.dat".

The methods of the scanner class do not behave the same when reading from a text file as they do when used to read from the keyboard.

The method __________ from the File class forces a physical write to the file of any data that is buffered.

Write a Java statement to create and open an output stream to a file named autos.txt.

The class ObjectInputStream contains all of the following methods except:

Using BufferedReader to read integers from a file requires the String input to be parsed to an integer type.

The class ObjectOutputStream contains all of the following methods except:

Write a Java statement that creates a stream that provides read/write access to the file named autos.txt.

Create try and catch block that opens a file named statistics.txt for output.Writes the integers 24,55,and 76 to the file,and then closes the file.

Every input file and every output file used by your program has only one name which is the same name used by the operating system.

A stream is an object that allows for the flow of data between your program and some I/O device or some file.

Only the classes provided for file output contain a method named close.

An ____________ allows data to flow from your program.

The stream that is automatically available to your Java code is:

When your program is finished writing to a file,it should close the stream connected to that file.

Write a complete Java program using a Scanner object that opens a file named autos.txt and displays each line to the screen.

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

Defining Classes II

Arrays

Inheritance

Polymorphism and Abstract Classes

Exception Handling

Recursion

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections,maps,and Iterators

Swing I

Swing II

Java Never Ends

Applets

Filters

Exam 10: File IO

Binary files can be handled more efficiently than text files.

Files whose contents must be handled as sequences of binary digits are called:

Explain what happens when an output file is opened in Java.

Write a Java statement to create an input stream to the binary file statistics.dat.

Write a Java statement to create an input stream to a file named "statistics.dat".

The methods of the scanner class do not behave the same when reading from a text file as they do when used to read from the keyboard.

The method __________ from the File class forces a physical write to the file of any data that is buffered.

Write a Java statement to create and open an output stream to a file named autos.txt.

The class ObjectInputStream contains all of the following methods except:

Using BufferedReader to read integers from a file requires the String input to be parsed to an integer type.

The class ObjectOutputStream contains all of the following methods except:

Write a Java statement that creates a stream that provides read/write access to the file named autos.txt.

Create try and catch block that opens a file named statistics.txt for output.Writes the integers 24,55,and 76 to the file,and then closes the file.

Every input file and every output file used by your program has only one name which is the same name used by the operating system.

A stream is an object that allows for the flow of data between your program and some I/O device or some file.

Only the classes provided for file output contain a method named close.

An ____________ allows data to flow from your program.

The stream that is automatically available to your Java code is:

When your program is finished writing to a file,it should close the stream connected to that file.

Write a complete Java program using a Scanner object that opens a file named autos.txt and displays each line to the screen.

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

Defining Classes II

Arrays

Inheritance

Polymorphism and Abstract Classes

Exception Handling

Recursion

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections,maps,and Iterators

Swing I

Swing II

Java Never Ends

Applets

Filters