Question 1

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

Accepted Answer

A)  0 
B)  once 
C)  9 times 
D)  10 times 
E)  11 times 
A)  0 
B)  once 
C)  9 times 
D)  10 times 
E)  11 times

Question 2

Code Segment Ch 05-1
if (a > 0)
   if (b  5)
         x = x + 4;
      else
         x = x + 3;
else
   x = x + 2;

-Refer to Code Segment Ch 05-1. If x is currently 0, a = 1 and b = -1, what will x become after the statement shown is executed?

Accepted Answer

A)  0 
B)  2 
C)  3 
D)  4 
E)  5 
A)  0 
B)  2 
C)  3 
D)  4 
E)  5

Question 3

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 4

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';

Question 5

In Java, selection statements consist only of if and if-else statements.

Accepted Answer

A) True 
 B)False

Question 6

What is wrong, logically, with the following code? if (x > 10)
System.out.println("Large");
Else if (x > 6 && x  3 && x <= 6)
System.out.println("Small");
Else
System.out.println("Very small");

Accepted Answer

A)  There is no logical error, but there is no need to have x  6 in the second conditional or x > 3 in the third conditional. 
C)  The logical error is that no matter what value x is, Very small is always printed out. 
D)  The logical error is that no matter what value x is, Large is always printed out. 
E)  There is nothing wrong with the logic at all. 
A)  There is no logical error, but there is no need to have x  6 in the second conditional or x > 3 in the third conditional. 
C)  The logical error is that no matter what value x is, Very small is always printed out. 
D)  The logical error is that no matter what value x is, Large is always printed out. 
E)  There is nothing wrong with the logic at all.

Question 7

Consider the following outline of a nested if-else structure which has more if clauses than else clauses. Which of the statements below is true regarding this structure? if (condition1)
If (condition2)
Statement1;
Else
Statement2;

Accepted Answer

A)  Syntactically it is invalid to have more if clauses than else clauses 
B)  statement2 will only execute if condition1 is false and condition2 is false 
C)  statement2 will only execute if condition1 is true and condition2 is false 
D)  statement2 will only execute if condition1 is false, it does not matter what condition2 is 
E)  statement2 will never execute 
A)  Syntactically it is invalid to have more if clauses than else clauses 
B)  statement2 will only execute if condition1 is false and condition2 is false 
C)  statement2 will only execute if condition1 is true and condition2 is false 
D)  statement2 will only execute if condition1 is false, it does not matter what condition2 is 
E)  statement2 will never execute

Question 8

The statement {} is a legal block.

Accepted Answer

A) True 
 B)False

Question 9

Consider the following code that will assign a letter grade of 'A', 'B', 'C', 'D', or 'F' depending on a student's test score. if (score >= 90) grade = 'A';
If (score >= 80) grade = 'B';
If (score >= 70) grade = 'C';
If (score >= 60) grade = 'D';
Else grade = 'F';

Accepted Answer

A)  This code will work correctly in all cases. 
B)  This code will work correctly only if the grade is greater than or equal to 60. 
C)  This code will work correctly only if the grade is less than 60. 
D)  This code will work correctly only if the grade is less than 70. 
E)  This code will not work correctly under any circumstances. 
A)  This code will work correctly in all cases. 
B)  This code will work correctly only if the grade is greater than or equal to 60. 
C)  This code will work correctly only if the grade is less than 60. 
D)  This code will work correctly only if the grade is less than 70. 
E)  This code will not work correctly under any circumstances.

Question 10

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 11

Assume that boolean done = false, int x = 10, int y = 11, String s = "Help" and String t = "Goodbye". Then the expression (!done && x <= y) is true.

Accepted Answer

A) True 
 B)False

Question 12

Assume that x and y are int variables with x = 5, y = 3, and a and d are char variables with a = 'a' and d = 'A', and examine the following conditions: Condition 1: (x  0)
Condition 2: (a != d || x != 5)
Condition 3: !(true && false)
Condition 4: (x > y || a == 'A' || d != 'A')

Accepted Answer

A)  all 4 conditions are true 
B)  Only Condition 2 is true 
C)  Condition 2 and Condition 4 are true only 
D)  Conditions 2, 3,4 are all true, Conditions 1 is not 
E)  all 4 conditions are false 
A)  all 4 conditions are true 
B)  Only Condition 2 is true 
C)  Condition 2 and Condition 4 are true only 
D)  Conditions 2, 3,4 are all true, Conditions 1 is not 
E)  all 4 conditions are false

Question 13

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 14

Code Segment Ch 05-1
if (a > 0)
   if (b  5)
         x = x + 4;
      else
         x = x + 3;
else
   x = x + 2;

-Refer to Code Segment Ch 05-1. If x is currently 0, a = 0 and b = -5, what will x become after the statement shown is executed?

Accepted Answer

A)  0 
B)  2 
C)  3 
D)  4 
E)  5 
A)  0 
B)  2 
C)  3 
D)  4 
E)  5

Question 15

A truth table shows, for the various true or false values of boolean variables, what the result of a boolean condition is. Fill in the following truth table. Assume that a, b and c are boolean variables.
$$\begin{array} { l l l l l l } 
\text { a } & b & c & a \text { \&\& } & ( ! b & | | \text { c }) \
\text { false } & \text { false } & \text { false } & & & \
\text { false } & \text { false } & \text { true } & & & \
\text { false } & \text { true } & \text { false } & & & \
\text { false } & \text { true } & \text { true } & & & \
\text { true } & \text { false } & \text { false } & & \
\text { true } & \text { false } & \text { true } & & & \
\text { true } & \text { true } & \text { false } & & & \
\text { true } & \text { true } & \text { true } & &
\end{array}$$

Accepted Answer

The answer of A truth table shows, for the various...

Question 16

If x is an int where x = 0, 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 these; this is an infinite loop 
A)  2 
B)  64 
C)  100 
D)  128 
E)  None of these; this is an infinite loop

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

A) True 
 B)False

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

Code Segment Ch 05-1 if (a > 0) if (b < 0) x = x + 5; else if (a > 5) x = x + 4; else x = x + 3; else x = x + 2; -Refer to Code Segment Ch 05-1. If x is currently 0, a = 1 and b = -1, what will x become after the statement shown is executed?

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.

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';

In Java, selection statements consist only of if and if-else statements.

What is wrong, logically, with the following code? if (x > 10) System.out.println("Large"); Else if (x > 6 && x <= 10) System.out.println("Medium"); Else if (x > 3 && x <= 6) System.out.println("Small"); Else System.out.println("Very small");

Consider the following outline of a nested if-else structure which has more if clauses than else clauses. Which of the statements below is true regarding this structure? if (condition1) If (condition2) Statement1; Else Statement2;

The statement {} is a legal block.

Consider the following code that will assign a letter grade of 'A', 'B', 'C', 'D', or 'F' depending on a student's test score. if (score >= 90) grade = 'A'; If (score >= 80) grade = 'B'; If (score >= 70) grade = 'C'; If (score >= 60) grade = 'D'; Else grade = 'F';

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 ||.

Assume that boolean done = false, int x = 10, int y = 11, String s = "Help" and String t = "Goodbye". Then the expression (!done && x <= y) is true.

Assume that x and y are int variables with x = 5, y = 3, and a and d are char variables with a = 'a' and d = 'A', and examine the following conditions: Condition 1: (x < y && x > 0) Condition 2: (a != d || x != 5) Condition 3: !(true && false) Condition 4: (x > y || a == 'A' || d != 'A')

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.

Code Segment Ch 05-1 if (a > 0) if (b < 0) x = x + 5; else if (a > 5) x = x + 4; else x = x + 3; else x = x + 2; -Refer to Code Segment Ch 05-1. If x is currently 0, a = 0 and b = -5, what will x become after the statement shown is executed?

If x is an int where x = 0, what will x be after the following loop terminates? while (x < 100) X *= 2;

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

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

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

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

Code Segment Ch 05-1 if (a > 0) if (b < 0) x = x + 5; else if (a > 5) x = x + 4; else x = x + 3; else x = x + 2; -Refer to Code Segment Ch 05-1. If x is currently 0, a = 1 and b = -1, what will x become after the statement shown is executed?

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.

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';

In Java, selection statements consist only of if and if-else statements.

What is wrong, logically, with the following code? if (x > 10) System.out.println("Large"); Else if (x > 6 && x <= 10) System.out.println("Medium"); Else if (x > 3 && x <= 6) System.out.println("Small"); Else System.out.println("Very small");

Consider the following outline of a nested if-else structure which has more if clauses than else clauses. Which of the statements below is true regarding this structure? if (condition1) If (condition2) Statement1; Else Statement2;

The statement {} is a legal block.

Consider the following code that will assign a letter grade of 'A', 'B', 'C', 'D', or 'F' depending on a student's test score. if (score >= 90) grade = 'A'; If (score >= 80) grade = 'B'; If (score >= 70) grade = 'C'; If (score >= 60) grade = 'D'; Else grade = 'F';

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 ||.

Assume that boolean done = false, int x = 10, int y = 11, String s = "Help" and String t = "Goodbye". Then the expression (!done && x <= y) is true.

Assume that x and y are int variables with x = 5, y = 3, and a and d are char variables with a = 'a' and d = 'A', and examine the following conditions: Condition 1: (x < y && x > 0) Condition 2: (a != d || x != 5) Condition 3: !(true && false) Condition 4: (x > y || a == 'A' || d != 'A')

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.

Code Segment Ch 05-1 if (a > 0) if (b < 0) x = x + 5; else if (a > 5) x = x + 4; else x = x + 3; else x = x + 2; -Refer to Code Segment Ch 05-1. If x is currently 0, a = 0 and b = -5, what will x become after the statement shown is executed?

If x is an int where x = 0, what will x be after the following loop terminates? while (x < 100) X *= 2;

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

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

Introduction

Data and Expressions

Using Classes and Objects

Writing Classes

More Conditionals and Loops

Object-Oriented Design

Arrays

Inheritance

Polymorphism

Exceptions

Recursion

Collections

Filters