Question 1

Which of the following will format 12.7801 to display as $12.78?

Accepted Answer

A)  System.out.printf("$%,.2f", 12.7801); 
B)  System.out.printf("%f", 12.7801); 
C)  System.out.printf("%.2f$$", 12.7801); 
D)  System.out.printf("$d", 12.7801); 
A)  System.out.printf("$%,.2f", 12.7801); 
B)  System.out.printf("%f", 12.7801); 
C)  System.out.printf("%.2f$$", 12.7801); 
D)  System.out.printf("$d", 12.7801);

Question 2

Unicode is an international encoding system that is extensive enough to represent ALL the characters of ALL the world's alphabets.

Accepted Answer

A) True 
 B)False

Question 3

The String.format method works exactly like the System.out.printf method, except that it does not display the formatted string on the screen.

Accepted Answer

A) True 
 B)False

Question 4

________ works like this: If the expression on the left side of the && operator is False, the expression the right side will not be checked.

Accepted Answer

A)  Short-circuit evaluation 
B)  Reverse logic 
C)  Boolean logic 
D)  Relational evaluation 
A)  Short-circuit evaluation 
B)  Reverse logic 
C)  Boolean logic 
D)  Relational evaluation

Question 5

What will be the value of charges after the following code is executed?
Double charges, rate = 7.00;
Int time = 180;
Charges = time <= 119 ?
Rate * 2 :
Time / 60.0 * rate;

Accepted Answer

A)  7.00 
B)  14.00 
C)  21.00 
D)  28.00 
A)  7.00 
B)  14.00 
C)  21.00 
D)  28.00

Question 6

This is an international coding system that is extensive enough to represent all the characters of all the world's alphabets:

Accepted Answer

A)  ASCII 
B)  Unicode 
C)  Java 
D)  None of the above 
A)  ASCII 
B)  Unicode 
C)  Java 
D)  None of the above

Question 7

A flag may have the values:

Accepted Answer

A)  0 or 1 
B)  +1 or -1 
C)  true or False 
D)  of any character 
A)  0 or 1 
B)  +1 or -1 
C)  true or False 
D)  of any character

Question 8

When two Strings are compared using the compareTo method, the cases of the two strings are not considered.

Accepted Answer

A) True 
 B)False

Question 9

What will be printed when the following code is executed?
Int y = 10;
If ( y == 10)
{
Int x = 30;
X += y;
}
System.out.print("x = ");
System.out.print(x);

Accepted Answer

A)  x = 30 
B)  x = 40 
C)  x = 20 
D)  x is unknown when the last statement is executed. 
A)  x = 30 
B)  x = 40 
C)  x = 20 
D)  x is unknown when the last statement is executed.

Question 10

The expression tested by an if statement must evaluate to:

Accepted Answer

A)  0 or 1 
B)  +1 or -1 
C)  true or False 
D)  t or f 
A)  0 or 1 
B)  +1 or -1 
C)  true or False 
D)  t or f

Question 11

If you prematurely terminate an if statement with a semicolon, the compiler will:

Accepted Answer

A)  Not display an error message 
B)  Assume you are placing a null statement there 
C)  All of the above 
D)  None of the above 
A)  Not display an error message 
B)  Assume you are placing a null statement there 
C)  All of the above 
D)  None of the above

Question 12

Because the || operator performs short-circuit evaluation, your boolean expression will generally be evaluated faster if the subexpression that is most likely to be true is on the left.

Accepted Answer

A) True 
 B)False

Question 13

In a switch statement, if two different values for the CaseExpression would result in the same code being executed, you must have two copies of the code, one after each CaseExpression.

Accepted Answer

A) True 
 B)False

Question 14

What would be the value of discountRate after the following statements are executed?
Double discountRate = 0.0;
Int purchase = 100;
If (purchase > 1000)
DiscountRate = .05;
Else if (purchase > 750)
DiscountRate = .03;
Else if (purchase > 500)
DiscountRate = .01;

Accepted Answer

A)  .05 
B)  .03 
C)  .01 
D)  0.0 
A)  .05 
B)  .03 
C)  .01 
D)  0.0

Question 15

What is the value of x after the following code has been executed?
Int x = 75;
Int y = 90;
If ( x != y)
X += y;

Accepted Answer

A)  75 
B)  90 
C)  15 
D)  165 
A)  75 
B)  90 
C)  15 
D)  165

Question 16

What does the following code display?
Int d = 9, e = 12;
System.out.printf("%d %d
", d, e);

Accepted Answer

A)  %d %d 
B)  9 12 
C)  %d 9 
D)  %9 %12 
A)  %d %d 
B)  9 12 
C)  %d 9 
D)  %9 %12

Question 17

This is a boolean variable that signals when some condition exists in the program:

Accepted Answer

A)  Sentinel 
B)  Block 
C)  Flag 
D)  Case 
A)  Sentinel 
B)  Block 
C)  Flag 
D)  Case

Question 18

Programs never need more than one path of execution.

Accepted Answer

A) True 
 B)False

Question 19

The switch statement is a:

Accepted Answer

A)  Multiple alternative decision structure 
B)  Nested decision structure 
C)  Sequence structure 
D)  Test expression 
A)  Multiple alternative decision structure 
B)  Nested decision structure 
C)  Sequence structure 
D)  Test expression

Question 20

The ________ statement is used to make simple decisions in Java.

Accepted Answer

A)  do/while 
B)  for 
C)  branch 
D)  if 
A)  do/while 
B)  for 
C)  branch 
D)  if

Which of the following will format 12.7801 to display as $12.78?

Unicode is an international encoding system that is extensive enough to represent ALL the characters of ALL the world's alphabets.

The String.format method works exactly like the System.out.printf method, except that it does not display the formatted string on the screen.

________ works like this: If the expression on the left side of the && operator is False, the expression the right side will not be checked.

What will be the value of charges after the following code is executed? Double charges, rate = 7.00; Int time = 180; Charges = time <= 119 ? Rate * 2 : Time / 60.0 * rate;

This is an international coding system that is extensive enough to represent all the characters of all the world's alphabets:

A flag may have the values:

When two Strings are compared using the compareTo method, the cases of the two strings are not considered.

What will be printed when the following code is executed? Int y = 10; If ( y == 10) { Int x = 30; X += y; } System.out.print("x = "); System.out.print(x);

The expression tested by an if statement must evaluate to:

If you prematurely terminate an if statement with a semicolon, the compiler will:

Because the || operator performs short-circuit evaluation, your boolean expression will generally be evaluated faster if the subexpression that is most likely to be true is on the left.

In a switch statement, if two different values for the CaseExpression would result in the same code being executed, you must have two copies of the code, one after each CaseExpression.

What would be the value of discountRate after the following statements are executed? Double discountRate = 0.0; Int purchase = 100; If (purchase > 1000) DiscountRate = .05; Else if (purchase > 750) DiscountRate = .03; Else if (purchase > 500) DiscountRate = .01;

What is the value of x after the following code has been executed? Int x = 75; Int y = 90; If ( x != y) X += y;

What does the following code display? Int d = 9, e = 12; System.out.printf("%d %d\n", d, e);

This is a boolean variable that signals when some condition exists in the program:

Programs never need more than one path of execution.

The switch statement is a:

The ________ statement is used to make simple decisions in Java.

Introduction to Computers and Java

Java Fundamentals

Loops and Files

Methods

A First Look at Classes

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

A First Look at GUI Applications

Advanced GUI Applications

Applets and More

Creating GUI Applications With Javafx and Scene Builder

Recursion

Databases

Filters

Exam 3: Decision Structures

Which of the following will format 12.7801 to display as $12.78?

Unicode is an international encoding system that is extensive enough to represent ALL the characters of ALL the world's alphabets.

The String.format method works exactly like the System.out.printf method, except that it does not display the formatted string on the screen.

________ works like this: If the expression on the left side of the && operator is False, the expression the right side will not be checked.

What will be the value of charges after the following code is executed? Double charges, rate = 7.00; Int time = 180; Charges = time <= 119 ? Rate * 2 : Time / 60.0 * rate;

This is an international coding system that is extensive enough to represent all the characters of all the world's alphabets:

A flag may have the values:

When two Strings are compared using the compareTo method, the cases of the two strings are not considered.

What will be printed when the following code is executed? Int y = 10; If ( y == 10) { Int x = 30; X += y; } System.out.print("x = "); System.out.print(x);

The expression tested by an if statement must evaluate to:

If you prematurely terminate an if statement with a semicolon, the compiler will:

Because the || operator performs short-circuit evaluation, your boolean expression will generally be evaluated faster if the subexpression that is most likely to be true is on the left.

In a switch statement, if two different values for the CaseExpression would result in the same code being executed, you must have two copies of the code, one after each CaseExpression.

What would be the value of discountRate after the following statements are executed? Double discountRate = 0.0; Int purchase = 100; If (purchase > 1000) DiscountRate = .05; Else if (purchase > 750) DiscountRate = .03; Else if (purchase > 500) DiscountRate = .01;

What is the value of x after the following code has been executed? Int x = 75; Int y = 90; If ( x != y) X += y;

What does the following code display? Int d = 9, e = 12; System.out.printf("%d %d\n", d, e);

This is a boolean variable that signals when some condition exists in the program:

Programs never need more than one path of execution.

The switch statement is a:

The ________ statement is used to make simple decisions in Java.

Introduction to Computers and Java

Java Fundamentals

Loops and Files

Methods

A First Look at Classes

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

A First Look at GUI Applications

Advanced GUI Applications

Applets and More

Creating GUI Applications With Javafx and Scene Builder

Recursion

Databases

Filters