Question 1

Which of the following are True statements about check boxes?

Accepted Answer

A)  they may be checked or unchecked 
B)  radio buttons are a special kind of check boxes 
C)  they are Java components 
D)  you can control whether or not they will be visible 
E)  all of the above 
A)  they may be checked or unchecked 
B)  radio buttons are a special kind of check boxes 
C)  they are Java components 
D)  you can control whether or not they will be visible 
E)  all of the above E

Question 2

Rewrite the following set of if statements using a nested if-else structure. if (score >= 90) grade = 'A'; if (score >= 80 && score = 70 && score = 60 && score < 70) grade = 'D'; if (score < 60) grade = 'F';

Accepted Answer

if (score >= 90) grade = 'A';
else if (score >= 80) grade = 'B';
else if (score >= 70) grade = 'C';
else if (score >= 60) grade = 'D';
else grade = 'F';

Question 3

Every Interator

Accepted Answer

A)  has a hasNext( ) method 
B)  has a hasFirst( ) method 
C)  has a hasNextInt( ) method 
D)  has a isEmpty( ) method 
E)  none of the above 
A)  has a hasNext( ) method 
B)  has a hasFirst( ) method 
C)  has a hasNextInt( ) method 
D)  has a isEmpty( ) method 
E)  none of the above A

Question 4

Explain what is meant by short circuiting and provide an example of short circuiting a condition with && and provide an example of short circuiting a condition with | |.

Accepted Answer

Short circuiting is when a boolean expre

Question 5

The idea that program instructions execute in order (linearly) unless otherwise specified through a conditional statement is known as

Accepted Answer

A)  boolean execution 
B)  conditional statements 
C)  try and catch 
D)  sequentiality 
E)  flow of control 
A)  boolean execution 
B)  conditional statements 
C)  try and catch 
D)  sequentiality 
E)  flow of control

Question 6

In Java, the symbol "=" and the symbol "==" are used synonymously (interchangeably).

Accepted Answer

A) True 
 B)False

Question 7

As in the other members of the C family of languages (C, C++, C#), Java interprets a zero value as false and a non-zero value as True.

Accepted Answer

A) True 
 B)False

Question 8

How many times will the following loop iterate?
Int x = 10;
While (x > 0)
{
System.out.println(x);
X--;
}

Accepted Answer

A)  0 times 
B)  1 time 
C)  9 times 
D)  10 times 
E)  11 times 
A)  0 times 
B)  1 time 
C)  9 times 
D)  10 times 
E)  11 times

Question 9

As introduced in the Software Failure, the terminology "risk analysis" means

Accepted Answer

A)  how willing are you to risk the loss of several key programmers working on your project 
B)  how much are you willing to risk that a particular piece of software you are developing still contains an error or errors 
C)  how willing are you to risk that your software will fail once implemented 
D)  how willing are you to risk that the machines on which your software will run will not work 
E)  none of the above 
A)  how willing are you to risk the loss of several key programmers working on your project 
B)  how much are you willing to risk that a particular piece of software you are developing still contains an error or errors 
C)  how willing are you to risk that your software will fail once implemented 
D)  how willing are you to risk that the machines on which your software will run will not work 
E)  none of the above

Question 10

For the questions below, assume that boolean done = false, int x = 10, int y = 11, String s = "Help" and String t = "Goodbye".
-The expression (!done && x <= y) is True.

Accepted Answer

A) True 
 B)False

Question 11

Regarding the Software Failure: The operators were warned that, although the Therac-25 had many safety precautions, it might be possible to accidentally overdose a patient.

Accepted Answer

A) True 
 B)False

Question 12

If x is an int where x = 1, what will x be after the following loop terminates?
While (x < 100)
X *= 2;

Accepted Answer

A)  2 
B)  64 
C)  100 
D)  128 
E)  none of the above, this is an infinite loop 
A)  2 
B)  64 
C)  100 
D)  128 
E)  none of the above, this is an infinite loop

Question 13

An if statement may or may not have an else clause, but an else clause must be part of an if statement.

Accepted Answer

A) True 
 B)False

Question 14

String s1 is said to overlap String s2 if all of the characters in s1 also appear in s2. Write a set of code that will set the boolean variable overlap to True if s1 overlaps s2 and false otherwise. Assume both s1 and s2 have already been input.

Accepted Answer

boolean overlap = True; // assume the tw

Question 15

In order to compare int, float and double variables, you can use , ==, !=, =, but to compare char and String variables, you must use compareTo( ), equals( ) and equalsIgnoreCase( ).

Accepted Answer

A) True 
 B)False

Question 16

The statement { } is a legal block.

Accepted Answer

A) True 
 B)False

Question 17

Which of the sets of statements below will add 1 to x if x is positive and subtract 1 from x if x is negative but leave x alone if x is 0?

Accepted Answer

A) if (x > 0) x++; else x--; B) if (x > 0) x++; else if (x 0) x++; if (x < 0) x--; Else x = 0; D) if (x == 0) x = 0; else x++; X--; E) x++; x--; A) if (x > 0) x++; else x--; B) if (x > 0) x++; else if (x 0) x++; if (x < 0) x--; Else x = 0; D) if (x == 0) x = 0; else x++; X--; E) x++; x--;

Question 18

If a break occurs within the innermost loop of a nested loop that is three levels deep

Accepted Answer

A)  when the break is encountered just the innermost loop is "broken" 
B)  when the break is encountered, all loops are "broken" and execution continues from after the while statement (in our example) 
C)  when the break is encountered, all but the outermost loops are broken, and execution continues from the next iteration of the while loop (in our example) 
D)  this is a syntax error unless there are break or continue statements at each loop level 
E)  none of the above 
A)  when the break is encountered just the innermost loop is "broken" 
B)  when the break is encountered, all loops are "broken" and execution continues from after the while statement (in our example) 
C)  when the break is encountered, all but the outermost loops are broken, and execution continues from the next iteration of the while loop (in our example) 
D)  this is a syntax error unless there are break or continue statements at each loop level 
E)  none of the above

Question 19

Of the following if statements, which one correctly executes three instructions if the condition is True?

Accepted Answer

A)  if (x < 0) a = b * 2;
Y = x;
Z = a - y; 
B)  { if (x < 0)
A = b * 2;
Y = x;
Z = a - y;
} 
C)  if { (x < 0) a = b * 2;
Y = x;
Z = a - y ;
} 
D)  if (x < 0) {
A = b * 2;
Y = x;
Z = a - y;
} 
E)  B, C and D are all correct, but not A 
A)  if (x < 0) a = b * 2;
Y = x;
Z = a - y; 
B)  { if (x < 0)
A = b * 2;
Y = x;
Z = a - y;
} 
C)  if { (x < 0) a = b * 2;
Y = x;
Z = a - y ;
} 
D)  if (x < 0) {
A = b * 2;
Y = x;
Z = a - y;
} 
E)  B, C and D are all correct, but not A

Question 20

When comparing any primitive type of variable, == should always be used to test to see if two values are equal.

Accepted Answer

A) True 
 B)False

Which of the following are True statements about check boxes?

Rewrite the following set of if statements using a nested if-else structure. if (score >= 90) grade = 'A'; if (score >= 80 && score < 90) grade = 'B'; if (score >= 70 && score < 80) grade = 'C'; if (score >= 60 && score < 70) grade = 'D'; if (score < 60) grade = 'F';

Every Interator

Explain what is meant by short circuiting and provide an example of short circuiting a condition with && and provide an example of short circuiting a condition with | |.

The idea that program instructions execute in order (linearly) unless otherwise specified through a conditional statement is known as

In Java, the symbol "=" and the symbol "==" are used synonymously (interchangeably).

As in the other members of the C family of languages (C, C++, C#), Java interprets a zero value as false and a non-zero value as True.

How many times will the following loop iterate? Int x = 10; While (x > 0) { System.out.println(x); X--; }

As introduced in the Software Failure, the terminology "risk analysis" means

For the questions below, assume that boolean done = false, int x = 10, int y = 11, String s = "Help" and String t = "Goodbye". -The expression (!done && x <= y) is True.

Regarding the Software Failure: The operators were warned that, although the Therac-25 had many safety precautions, it might be possible to accidentally overdose a patient.

If x is an int where x = 1, what will x be after the following loop terminates? While (x < 100) X *= 2;

An if statement may or may not have an else clause, but an else clause must be part of an if statement.

String s1 is said to overlap String s2 if all of the characters in s1 also appear in s2. Write a set of code that will set the boolean variable overlap to True if s1 overlaps s2 and false otherwise. Assume both s1 and s2 have already been input.

In order to compare int, float and double variables, you can use <, >, ==, !=, <=, >=, but to compare char and String variables, you must use compareTo( ), equals( ) and equalsIgnoreCase( ).

The statement { } is a legal block.

Which of the sets of statements below will add 1 to x if x is positive and subtract 1 from x if x is negative but leave x alone if x is 0?

If a break occurs within the innermost loop of a nested loop that is three levels deep

Of the following if statements, which one correctly executes three instructions if the condition is True?

When comparing any primitive type of variable, == should always be used to test to see if two values are equal.

Introduction

Data and Expressions

Using Classes and Objects

Writing Classes

More Conditionals and Loops

Object-Oriented Design

Arrays

Inheritance

Polymorphism

Exceptions

Recursion

Collections

Filters

Exam 5: Conditionals and Loops

Which of the following are True statements about check boxes?

Rewrite the following set of if statements using a nested if-else structure. if (score >= 90) grade = 'A'; if (score >= 80 && score < 90) grade = 'B'; if (score >= 70 && score < 80) grade = 'C'; if (score >= 60 && score < 70) grade = 'D'; if (score < 60) grade = 'F';

Every Interator

Explain what is meant by short circuiting and provide an example of short circuiting a condition with && and provide an example of short circuiting a condition with | |.

The idea that program instructions execute in order (linearly) unless otherwise specified through a conditional statement is known as

In Java, the symbol "=" and the symbol "==" are used synonymously (interchangeably).

As in the other members of the C family of languages (C, C++, C#), Java interprets a zero value as false and a non-zero value as True.

How many times will the following loop iterate? Int x = 10; While (x > 0) { System.out.println(x); X--; }

As introduced in the Software Failure, the terminology "risk analysis" means

For the questions below, assume that boolean done = false, int x = 10, int y = 11, String s = "Help" and String t = "Goodbye". -The expression (!done && x <= y) is True.

Regarding the Software Failure: The operators were warned that, although the Therac-25 had many safety precautions, it might be possible to accidentally overdose a patient.

If x is an int where x = 1, what will x be after the following loop terminates? While (x < 100) X *= 2;

An if statement may or may not have an else clause, but an else clause must be part of an if statement.

String s1 is said to overlap String s2 if all of the characters in s1 also appear in s2. Write a set of code that will set the boolean variable overlap to True if s1 overlaps s2 and false otherwise. Assume both s1 and s2 have already been input.

In order to compare int, float and double variables, you can use <, >, ==, !=, <=, >=, but to compare char and String variables, you must use compareTo( ), equals( ) and equalsIgnoreCase( ).

The statement { } is a legal block.

Which of the sets of statements below will add 1 to x if x is positive and subtract 1 from x if x is negative but leave x alone if x is 0?

If a break occurs within the innermost loop of a nested loop that is three levels deep

Of the following if statements, which one correctly executes three instructions if the condition is True?

When comparing any primitive type of variable, == should always be used to test to see if two values are equal.

Introduction

Data and Expressions

Using Classes and Objects

Writing Classes

More Conditionals and Loops

Object-Oriented Design

Arrays

Inheritance

Polymorphism

Exceptions

Recursion

Collections

Filters