Question 1

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

Accepted Answer

A) True 
 B)False  True

Question 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

A)  0 
B)  1 
C)  4 
D)  5 
A)  0 
B)  1 
C)  4 
D)  5 B

Question 4

Which of the following are pre-test loops?

Accepted Answer

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

Question 5

What will be printed after the following code is executed? for (int number = 5;number < = 15;number +=3)
System.out.print(number + ",");

Accepted Answer

A)  5,6,7,8,9,10,11,12,13,14,15, 
B)  5,8,11,14,17, 
C)  5,8,11,14, 
D)  This is an invalid for statement 
A)  5,6,7,8,9,10,11,12,13,14,15, 
B)  5,8,11,14,17, 
C)  5,8,11,14, 
D)  This is an invalid for statement

Question 6

This is an item that separates other items.

Accepted Answer

A)  Controller 
B)  Partition 
C)  Doorway 
D)  Delimiter 
A)  Controller 
B)  Partition 
C)  Doorway 
D)  Delimiter

Question 7

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 8

What will be the value of x after the following code is executed? int x = 10;
Do
{
X *= 20;
}
While (x > 5);

Accepted Answer

A)  10 
B)  200 
C)  This is an infinite loop. 
D)  The loop will not be executed,the initial value of x > 5. 
A)  10 
B)  200 
C)  This is an infinite loop. 
D)  The loop will not be executed,the initial value of x > 5.

Question 9

The do-while loop must be terminated with a semicolon.

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

A)  90 
B)  100 
C)  110 
D)  This is an infinite loop 
A)  90 
B)  100 
C)  110 
D)  This is an infinite loop

Question 11

A loop that executes as long as a particular condition exists is called a(n)

Accepted Answer

A)  sentinel loop 
B)  conditional loop 
C)  count-controlled loop 
D)  infinite loop 
A)  sentinel loop 
B)  conditional loop 
C)  count-controlled loop 
D)  infinite loop

Question 12

This is a sum of numbers that accumulates with each iteration of a loop.

Accepted Answer

A)  Running total 
B)  Final total 
C)  Grand finale 
D)  Galloping total 
A)  Running total 
B)  Final total 
C)  Grand finale 
D)  Galloping total

Question 13

In the following code,what values could be read into number to terminate the while loop? Scanner keyboard = new Scanner(System.in);
System.out.print("Enter a number: ");
Int number = keyboard.nextInt();
While (number  500)
{
System.out.print("Enter another number: ");
Number = keyboard.nextInt();
}

Accepted Answer

A)  Numbers less than 100 or greater than 500 
B)  Numbers in the range 100 - 499 
C)  Numbers in the range 100 - 500 
D)  The boolean condition can never be true 
A)  Numbers less than 100 or greater than 500 
B)  Numbers in the range 100 - 499 
C)  Numbers in the range 100 - 500 
D)  The boolean condition can never be true

Question 14

You can use this method to determine whether a file exists.

Accepted Answer

A)  The Scanner class's exists method 
B)  The File class's exists method 
C)  The File class's canOpen method 
D)  The PrintWriter class's fileExists method 
A)  The Scanner class's exists method 
B)  The File class's exists method 
C)  The File class's canOpen method 
D)  The PrintWriter class's fileExists method

Question 15

When you pass the name of a fi le 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 16

In the following code,what values could be read into number to terminate the while loop? Scanner keyboard = new Scanner(System.in);
System.out.print("Enter a number: ");
Int number = keyboard.nextInt();
While (number  500)
{
System.out.print("Enter another number: ");
Number = keyboard.nextInt();
}

Accepted Answer

A)  Numbers less than 100 
B)  Numbers greater than 500 
C)  Numbers in the range 100 - 499 
D)  Numbers in the range 100 - 500 
A)  Numbers less than 100 
B)  Numbers greater than 500 
C)  Numbers in the range 100 - 499 
D)  Numbers in the range 100 - 500

Question 17

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)  40 
B)  25 
C)  30 
D)  Invalid for statement 
A)  40 
B)  25 
C)  30 
D)  Invalid for statement

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

A)  90 
B)  100 
C)  110 
D)  This is an infinite loop 
A)  90 
B)  100 
C)  110 
D)  This is an infinite loop

Question 20

Before entering a loop to compute a running total,the program should first do this.

Accepted Answer

A)  Read all the values into main memory 
B)  Set the accumulator where the total will be kept to an initial value,usually zero 
C)  Know exactly how many values there are to total 
D)  Set all variables to zero 
A)  Read all the values into main memory 
B)  Set the accumulator where the total will be kept to an initial value,usually zero 
C)  Know exactly how many values there are to total 
D)  Set all variables to zero

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

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

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

Which of the following are pre-test loops?

What will be printed after the following code is executed? for (int number = 5;number < = 15;number +=3) System.out.print(number + ",");

This is an item that separates other items.

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.

What will be the value of x after the following code is executed? int x = 10; Do { X *= 20; } While (x > 5);

The do-while loop must be terminated with a semicolon.

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

A loop that executes as long as a particular condition exists is called a(n)

This is a sum of numbers that accumulates with each iteration of a loop.

You can use this method to determine whether a file exists.

When you pass the name of a fi le 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 = 10; For (int y = 5;y < 20;y +=5) X += y;

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

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

Before entering a loop to compute a running total,the program should first do this.

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Methods

A First Look at Classes

A First Look at Gui Applications

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File Io

Advanced Gui Applications

Applets and More

Recursion

Sorting, Searching, and Algorithm Analysis

Generics

Collections

Array-Based Lists

Linked Lists

Stacks and Queues

Binary Trees, Avl Trees, and Priority Queues

Filters

Exam 4: Loops and Files

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

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

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

Which of the following are pre-test loops?

What will be printed after the following code is executed? for (int number = 5;number < = 15;number +=3) System.out.print(number + ",");

This is an item that separates other items.

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.

What will be the value of x after the following code is executed? int x = 10; Do { X *= 20; } While (x > 5);

The do-while loop must be terminated with a semicolon.

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

A loop that executes as long as a particular condition exists is called a(n)

This is a sum of numbers that accumulates with each iteration of a loop.

You can use this method to determine whether a file exists.

When you pass the name of a fi le 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 = 10; For (int y = 5;y < 20;y +=5) X += y;

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

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

Before entering a loop to compute a running total,the program should first do this.

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Methods

A First Look at Classes

A First Look at Gui Applications

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File Io

Advanced Gui Applications

Applets and More

Recursion

Sorting, Searching, and Algorithm Analysis

Generics

Collections

Array-Based Lists

Linked Lists

Stacks and Queues

Binary Trees, Avl Trees, and Priority Queues

Filters