Question 1

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 B

Question 2

Explain the differences between a text file,an ASCII file and a binary file.

Accepted Answer

Text files are files that appear to contain sequences of characters when viewed in a text editor or read by a program.Text files are sometimes also called ASCII files because they contain data encoded using a scheme known as ASCII coding.Files whose contents must be handled as sequences of binary digits are called binary files.

Question 3

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

Accepted Answer

import java.io.BufferedReader; import java.io.FileReader; import java.io.FileNotFoundException; import java.io.IOException; public class TextDemo { public static void main(String args[]) { BufferedReader inputStream = null; try { inputStream = new BufferedReader(new FileReader("autos.txt")); String line = inputStream.readLine(); while(line != null) { System.out.println(line); line = inputStream.readLine(); } inputStream.close(); } catch(FileNotFoundException e) { System.out.println("Error opening files."); } catch(IOException e) { System.out.println("Error reading from file."); } } }

Question 4

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 5

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

Question 6

Write a complete Java program that opens a binary file containing integers and displays the contents to the screen.

Accepted Answer

import java.io.ObjectInputStream; import

Question 7

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

Accepted Answer

In Java,when an output stream is connect

Question 8

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 9

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 10

What happens when the method close is invoked on a stream?

Accepted Answer

When the close method is invok

Question 11

The method _________ reads a single character from an input stream.

Accepted Answer

A) readLine() 
B) skip() 
C) read() 
D) close() 
A) readLine() 
B) skip() 
C) read() 
D) close()

Question 12

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 13

The preferred stream classes for processing binary files are ObjectInputStream and ObjectOutputStream.

Accepted Answer

A) True 
 B)False

Question 14

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

Accepted Answer

RandomAccessFile ioS

Question 15

Use the output stream to the file autos.txt created above in number 2 to write the line "Mercedes" to the file.

Accepted Answer

outputStre

Question 16

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 17

The scanner class has a series of methods that checks to see if there is any more well-formed input of the appropriate type.These methods are called __________ methods:

Accepted Answer

A) nextToken 
B) hasNext 
C) getNext 
D) testNext 
A) nextToken 
B) hasNext 
C) getNext 
D) testNext

Question 18

The File class contains methods that allow you to check various properties of a file.

Accepted Answer

A) True 
 B)False

Question 19

The read()method of the class RandomAccessFile returns the type:

Accepted Answer

A) byte 
B) int 
C) char 
D) double 
A) byte 
B) int 
C) char 
D) double

Question 20

Use the output stream created in number 11 above to write the String BBC to the file named statistics.dat.

Accepted Answer

outputStre

An ____________ allows data to flow from your program.

Explain the differences between a text file,an ASCII file and a binary file.

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

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

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

Write a complete Java program that opens a binary file containing integers and displays the contents to the screen.

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

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 class ObjectOutputStream contains all of the following methods except:

What happens when the method close is invoked on a stream?

The method _________ reads a single character from an input stream.

The class ObjectInputStream contains all of the following methods except:

The preferred stream classes for processing binary files are ObjectInputStream and ObjectOutputStream.

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

Use the output stream to the file autos.txt created above in number 2 to write the line "Mercedes" to 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.

The scanner class has a series of methods that checks to see if there is any more well-formed input of the appropriate type.These methods are called __________ methods:

The File class contains methods that allow you to check various properties of a file.

The read()method of the class RandomAccessFile returns the type:

Use the output stream created in number 11 above to write the String BBC to the file named statistics.dat.

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

Defining Classes Ii

Arrays

Inheritance

Console Input and Output

Exception Handling

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections and Iterators

Swing I

Swing II

Java Never Ends

Recursion

Applets

Filters

Exam 10: File IO

An ____________ allows data to flow from your program.

Explain the differences between a text file,an ASCII file and a binary file.

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

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

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

Write a complete Java program that opens a binary file containing integers and displays the contents to the screen.

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

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 class ObjectOutputStream contains all of the following methods except:

What happens when the method close is invoked on a stream?

The method _________ reads a single character from an input stream.

The class ObjectInputStream contains all of the following methods except:

The preferred stream classes for processing binary files are ObjectInputStream and ObjectOutputStream.

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

Use the output stream to the file autos.txt created above in number 2 to write the line "Mercedes" to 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.

The scanner class has a series of methods that checks to see if there is any more well-formed input of the appropriate type.These methods are called __________ methods:

The File class contains methods that allow you to check various properties of a file.

The read()method of the class RandomAccessFile returns the type:

Use the output stream created in number 11 above to write the String BBC to the file named statistics.dat.

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

Defining Classes Ii

Arrays

Inheritance

Console Input and Output

Exception Handling

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections and Iterators

Swing I

Swing II

Java Never Ends

Recursion

Applets

Filters