Question 1

How can the following statement be rewritten using a conditional operator? if(x <0) y = x;
Else y = 0;

Accepted Answer

A)  y = (x < 0) ? x : 0; 
B)  x = (x < 0) ? y : 0; 
C)  (x < 0) ? y = x : y = 0; 
D)  y = (x < 0); 
E)  y = if(x < 0) x : 0; 
A)  y = (x < 0) ? x : 0; 
B)  x = (x < 0) ? y : 0; 
C)  (x < 0) ? y = x : y = 0; 
D)  y = (x < 0); 
E)  y = if(x < 0) x : 0;

Question 2

If a switch statement contains no break statements at all,

Accepted Answer

A)  a syntax error will occur 
B)  each of the case clauses will be executed every time the switch statement is encountered 
C)  this is equivalent to having the switch statement always take the default clause, if one is present 
D)  this is not a syntax error but nothing within the switch statement will ever be executed 
E)  None of these 
A)  a syntax error will occur 
B)  each of the case clauses will be executed every time the switch statement is encountered 
C)  this is equivalent to having the switch statement always take the default clause, if one is present 
D)  this is not a syntax error but nothing within the switch statement will ever be executed 
E)  None of these

Question 3

Write a declaration that initializes an int variable named num1 to 100 if the boolean variable score is true and to 50 otherwise, using the conditional operator.

Accepted Answer

int num1 =

Question 4

What does the break statement do?

Accepted Answer

A)  It ends a program. 
B)  It transfers control out of the current control structure such as a loop or switch statement. 
C)  It ends the current line of output, returning the cursor. 
D)  It denotes the end of a switch statement. 
E)  It indicates the end of a line when using System.out.print. 
A)  It ends a program. 
B)  It transfers control out of the current control structure such as a loop or switch statement. 
C)  It ends the current line of output, returning the cursor. 
D)  It denotes the end of a switch statement. 
E)  It indicates the end of a line when using System.out.print.

Question 5

Rewrite the following nested if-else statements using an equivalent switch statement.
if (letter == 'A' || letter == 'a')
System.out.println("Excellent");
else if (letter == 'B' || letter == 'b')
System.out.println("You can do better");
else if (letter == 'C' || letter == 'c')
System.out.println("Try harder");
else if (letter == 'D' || letter == 'd')
System.out.println("Try much harder");
else System.out.println("Try another major! ");

Accepted Answer

switch (letter)
{
case 'A', 'a' : System

Question 6

You might choose to use a switch statement instead of nested if-else statements if

Accepted Answer

A)  the variable being tested might equal one of several hundred integer values 
B)  the variable being tested might equal one of a few integer values 
C)  there are two or more integer variables being tested, each one of which could be one of several hundred values 
D)  there are two or more integer variables being tested, each one of which could be one of a few values 
E)  None of these; you would never choose a switch statement instead of nested if-else statements under any circumstances. 
A)  the variable being tested might equal one of several hundred integer values 
B)  the variable being tested might equal one of a few integer values 
C)  there are two or more integer variables being tested, each one of which could be one of several hundred values 
D)  there are two or more integer variables being tested, each one of which could be one of a few values 
E)  None of these; you would never choose a switch statement instead of nested if-else statements under any circumstances.

Question 7

Given that s is a String, what does the following loop do? for(int j = s.length(); j > 0; j--)
System.out.print;

Accepted Answer

A)  It prints s out backwards 
B)  It prints s out forwards 
C)  It prints s out backwards after skipping the last character 
D)  It prints s out backwards but does not print the first character 
E)  It yields a run-time error because there is no character at s.charAt(j-1) for j = 0 
A)  It prints s out backwards 
B)  It prints s out forwards 
C)  It prints s out backwards after skipping the last character 
D)  It prints s out backwards but does not print the first character 
E)  It yields a run-time error because there is no character at s.charAt(j-1) for j = 0

Question 8

Describe a situation where you should use a do loop and a situation where you should use a while loop.

Accepted Answer

The do loop is used if you want to execu

Question 9

It is possible to convert any type of loop (while, do, for) into any other.

Accepted Answer

A) True 
 B)False

Question 10

A switch statement must have a default clause.

Accepted Answer

A) True 
 B)False

Question 11

Given the following tax table information, write Java code to assign the double taxRate appropriately, given the double pay. Select the selection statement (if, if-else, switch) that makes the most sense.
If pay is more than 100,000, tax rate is 40%
If pay is more than 60,000 and less than or equal to 100,000, tax rate is 30%
If pay is more than 30,000 and less than or equal to 60,000, tax rate is 20%
If pay is more than 15,000 and less than or equal to 30,000, tax rate is 10%
If pay is more than 5,000 and less than or equal to 15,000, tax rate is 5%
If pay is less than or equal to 5,000, tax rate is 0%

Accepted Answer

Use a nested if-else structure as it req

Question 12

Write the code to display an ImageView named the_view at half its original size.

Accepted Answer

the_view.s

Question 13

Each switch statement must terminate with a break statement.

Accepted Answer

A) True 
 B)False

Question 14

Rewrite the following if-else statement using a conditional operator.
if (x > y) z = x; else z = y;

Accepted Answer

z = (x > y

Question 15

Given the following code, where x = 0, what is the resulting value of x after the for loop terminates? for(int i = 0; i < 5; i++)
X += i;

Accepted Answer

A)  0 
B)  4 
C)  5 
D)  10 
E)  15 
A)  0 
B)  4 
C)  5 
D)  10 
E)  15

How can the following statement be rewritten using a conditional operator? if(x <0) y = x; Else y = 0;

If a switch statement contains no break statements at all,

Write a declaration that initializes an int variable named num1 to 100 if the boolean variable score is true and to 50 otherwise, using the conditional operator.

What does the break statement do?

You might choose to use a switch statement instead of nested if-else statements if

Given that s is a String, what does the following loop do? for(int j = s.length(); j > 0; j--) System.out.print;

Describe a situation where you should use a do loop and a situation where you should use a while loop.

It is possible to convert any type of loop (while, do, for) into any other.

A switch statement must have a default clause.

Write the code to display an ImageView named the_view at half its original size.

Each switch statement must terminate with a break statement.

Rewrite the following if-else statement using a conditional operator. if (x > y) z = x; else z = y;

Given the following code, where x = 0, what is the resulting value of x after the for loop terminates? for(int i = 0; i < 5; i++) X += i;

Introduction

Data and Expressions

Using Classes and Objects

Writing Classes

Conditionals and Loops

Object-Oriented Design

Arrays

Inheritance

Polymorphism

Exceptions

Recursion

Collections

Filters

Exam 6: More Conditionals and Loops

How can the following statement be rewritten using a conditional operator? if(x <0) y = x; Else y = 0;

If a switch statement contains no break statements at all,

Write a declaration that initializes an int variable named num1 to 100 if the boolean variable score is true and to 50 otherwise, using the conditional operator.

What does the break statement do?

You might choose to use a switch statement instead of nested if-else statements if

Given that s is a String, what does the following loop do? for(int j = s.length(); j > 0; j--) System.out.print;

Describe a situation where you should use a do loop and a situation where you should use a while loop.

It is possible to convert any type of loop (while, do, for) into any other.

A switch statement must have a default clause.

Write the code to display an ImageView named the_view at half its original size.

Each switch statement must terminate with a break statement.

Rewrite the following if-else statement using a conditional operator. if (x > y) z = x; else z = y;

Given the following code, where x = 0, what is the resulting value of x after the for loop terminates? for(int i = 0; i < 5; i++) X += i;

Introduction

Data and Expressions

Using Classes and Objects

Writing Classes

Conditionals and Loops

Object-Oriented Design

Arrays

Inheritance

Polymorphism

Exceptions

Recursion

Collections

Filters