Question 1

If a loop does not contain within itself a way to terminate, it is called

Accepted Answer

A)  a for loop. 
B)  an infinite loop. 
C)  a while loop. 
D)  a do-while loop. 
A)  a for loop. 
B)  an infinite loop. 
C)  a while loop. 
D)  a do-while loop. B

Question 2

What will be the value of x after the following code is executed?
Int x = 10;
While (x < 100)
{
X += 10;
}

Accepted Answer

A)  100 
B)  90 
C)  110 
D)  10 
A)  100 
B)  90 
C)  110 
D)  10 A

Question 3

A ________ is a value that signals when the end of a list of values has been reached.

Accepted Answer

A)  terminal 
B)  sentinel 
C)  token 
D)  delimiter 
A)  terminal 
B)  sentinel 
C)  token 
D)  delimiter B

Question 4

Which of the following statements opens a file named MyFile.txt and allows you to read data from it?

Accepted Answer

A)  Scanner inputFile = new Scanner("MyFile.txt"); 
B)  File file = new File("MyFile.txt"); Scanner inputFile = new Scanner(file); 
C)  File file = new File("MyFile.txt"); 
D)  PrintWriter inputFile = new PrintWriter("MyFile.txt"); 
A)  Scanner inputFile = new Scanner("MyFile.txt"); 
B)  File file = new File("MyFile.txt"); Scanner inputFile = new Scanner(file); 
C)  File file = new File("MyFile.txt"); 
D)  PrintWriter inputFile = new PrintWriter("MyFile.txt");

Question 5

You can use the PrintWriter class to open a file and write data to it.

Accepted Answer

A) True 
 B)False

Question 6

How many times will the following for loop be executed?
For (int count = 10; count <= 21; count++)
System.out.println("Java is great!");

Accepted Answer

A)  0 
B)  12 
C)  10 
D)  11 
A)  0 
B)  12 
C)  10 
D)  11

Question 7

How many times will the following do-while loop be executed?
Int x = 11;
Do
{
X += 20;
} while (x <= 100);

Accepted Answer

A)  5 
B)  4 
C)  3 
D)  1 
A)  5 
B)  4 
C)  3 
D)  1

Question 8

What will be the value of x after the following code is executed?
Int x = 10;
For (int y = 5; y < 20; y +=5)
X += y;

Accepted Answer

A)  25 
B)  30 
C)  50 
D)  40 
A)  25 
B)  30 
C)  50 
D)  40

Question 9

What will be the values of x and y as a result of the following code?
Int x = 25, y = 8;
X += y++;

Accepted Answer

A)  x = 34, y = 9 
B)  x = 25, y = 8 
C)  x = 33, y = 8 
D)  x = 33, y = 9 
A)  x = 34, y = 9 
B)  x = 25, y = 8 
C)  x = 33, y = 8 
D)  x = 33, y = 9

Question 10

The ________ is ideal in situations where the exact number of iterations is known.

Accepted Answer

A)  for loop 
B)  while loop 
C)  posttest loop 
D)  do-while loop 
A)  for loop 
B)  while loop 
C)  posttest loop 
D)  do-while loop

Question 11

In general, there are two types of files:

Accepted Answer

A)  text and binary. 
B)  encrypted and unencrypted. 
C)  delimited and unlimited. 
D)  static and dynamic. 
A)  text and binary. 
B)  encrypted and unencrypted. 
C)  delimited and unlimited. 
D)  static and dynamic.

Question 12

When the continue statement is encountered in a loop, all the statements in the body of the loop that appear after it are ignored, and the loop prepares for the next iteration.

Accepted Answer

A) True 
 B)False

Question 13

A file must always be opened before using it and closed when the program is finished using it.

Accepted Answer

A) True 
 B)False

Question 14

In a for loop, the control variable can only be incremented.

Accepted Answer

A) True 
 B)False

Question 15

Assuming that inputFile references a Scanner object that was used to open a file, which of the following statements will read an int from the file?

Accepted Answer

A)  int number = inputFile.next(); 
B)  int number = inputFile.integer(); 
C)  int number = inputFile.readInt(); 
D)  int number = inputFile.nextInt(); 
A)  int number = inputFile.next(); 
B)  int number = inputFile.integer(); 
C)  int number = inputFile.readInt(); 
D)  int number = inputFile.nextInt();

Question 16

Which of the following statements opens a file named MyFile.txt and allows you to append data to its existing contents?

Accepted Answer

A)  FileWriter fwriter = new FileWriter("MyFile.txt"); PrintWriter outFile = new PrintWriter(fwriter); 
B)  FileWriter fwriter = new FileWriter("MyFile.txt", true); PrintWriter outFile = new PrintWriter(fwriter); 
C)  PrintWriter outfile = new PrintWriter("MyFile.txt", true); 
D)  PrintWriter outfile = new PrintWriter(true, "MyFile.txt"); 
A)  FileWriter fwriter = new FileWriter("MyFile.txt"); PrintWriter outFile = new PrintWriter(fwriter); 
B)  FileWriter fwriter = new FileWriter("MyFile.txt", true); PrintWriter outFile = new PrintWriter(fwriter); 
C)  PrintWriter outfile = new PrintWriter("MyFile.txt", true); 
D)  PrintWriter outfile = new PrintWriter(true, "MyFile.txt");

Question 17

When you open a file with the PrintWriter class, the class can potentially throw an IOException.

Accepted Answer

A) True 
 B)False

Question 18

The ________ loop is ideal in situations where you always want the loop to iterate at least once.

Accepted Answer

A)  for 
B)  while 
C)  do-while 
D)  pretest 
A)  for 
B)  while 
C)  do-while 
D)  pretest

Question 19

When you pass the name of a file to the PrintWriter constructor, and the file already exists, it will be erased and a new empty file with the same name will be created.

Accepted Answer

A) True 
 B)False

Question 20

What will be the value of x after the following code is executed?
Int x, y = 15;
X = y--;

Accepted Answer

A)  14 
B)  16 
C)  0 
D)  15 
A)  14 
B)  16 
C)  0 
D)  15

If a loop does not contain within itself a way to terminate, it is called

What will be the value of x after the following code is executed? Int x = 10; While (x < 100) { X += 10; }

A ________ is a value that signals when the end of a list of values has been reached.

Which of the following statements opens a file named MyFile.txt and allows you to read data from it?

You can use the PrintWriter class to open a file and write data to it.

How many times will the following for loop be executed? For (int count = 10; count <= 21; count++) System.out.println("Java is great!");

How many times will the following do-while loop be executed? Int x = 11; Do { X += 20; } while (x <= 100);

What will be the value of x after the following code is executed? Int x = 10; For (int y = 5; y < 20; y +=5) X += y;

What will be the values of x and y as a result of the following code? Int x = 25, y = 8; X += y++;

The ________ is ideal in situations where the exact number of iterations is known.

In general, there are two types of files:

When the continue statement is encountered in a loop, all the statements in the body of the loop that appear after it are ignored, and the loop prepares for the next iteration.

A file must always be opened before using it and closed when the program is finished using it.

In a for loop, the control variable can only be incremented.

Assuming that inputFile references a Scanner object that was used to open a file, which of the following statements will read an int from the file?

Which of the following statements opens a file named MyFile.txt and allows you to append data to its existing contents?

When you open a file with the PrintWriter class, the class can potentially throw an IOException.

The ________ loop is ideal in situations where you always want the loop to iterate at least once.

When you pass the name of a file to the PrintWriter constructor, and the file already exists, it will be erased and a new empty file with the same name will be created.

What will be the value of x after the following code is executed? Int x, y = 15; X = y--;

Introduction to Computers and Java

Java Fundamentals

A First Look at Classes and Objects

Decision Structures

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 5: Loops and Files

If a loop does not contain within itself a way to terminate, it is called

What will be the value of x after the following code is executed? Int x = 10; While (x < 100) { X += 10; }

A ________ is a value that signals when the end of a list of values has been reached.

Which of the following statements opens a file named MyFile.txt and allows you to read data from it?

You can use the PrintWriter class to open a file and write data to it.

How many times will the following for loop be executed? For (int count = 10; count <= 21; count++) System.out.println("Java is great!");

How many times will the following do-while loop be executed? Int x = 11; Do { X += 20; } while (x <= 100);

What will be the value of x after the following code is executed? Int x = 10; For (int y = 5; y < 20; y +=5) X += y;

What will be the values of x and y as a result of the following code? Int x = 25, y = 8; X += y++;

The ________ is ideal in situations where the exact number of iterations is known.

In general, there are two types of files:

When the continue statement is encountered in a loop, all the statements in the body of the loop that appear after it are ignored, and the loop prepares for the next iteration.

A file must always be opened before using it and closed when the program is finished using it.

In a for loop, the control variable can only be incremented.

Assuming that inputFile references a Scanner object that was used to open a file, which of the following statements will read an int from the file?

Which of the following statements opens a file named MyFile.txt and allows you to append data to its existing contents?

When you open a file with the PrintWriter class, the class can potentially throw an IOException.

The ________ loop is ideal in situations where you always want the loop to iterate at least once.

When you pass the name of a file to the PrintWriter constructor, and the file already exists, it will be erased and a new empty file with the same name will be created.

What will be the value of x after the following code is executed? Int x, y = 15; X = y--;

Introduction to Computers and Java

Java Fundamentals

A First Look at Classes and Objects

Decision Structures

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