APDQ 2.1 - 2.3
Authored by enorberg@dupage88.net enorberg@dupage88.net
Computers
12th Grade
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Consider the following code segment.
int temp = 75;
String choice;
boolean hasSibling = false;
if (temp < 70)
{
choice = "Indoors";
}
else
{
choice = "Outdoors";
}
if (hasSibling)
{
choice += " with sibling";
}
What is the value of choice after executing the code segment?
"Indoors"
"Outdoors"
"Indoors with sibling"
"Outdoors with sibling"
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Consider the following code segment.
int x = 3;
int y = -1;
if (x - 2 > y)
{
x -= y;
}
if (y + 3 >= x)
{
y += x;
}
System.out.print("x = " + x + ", y = " + y);
What is printed as a result of executing the code segment?
x = 2, y = 1
x = 3, y = 2
x = 4, y = -1
x = 4, y = 3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Consider the following two code segments where the int variable choice has been properly declared and initialized.
Code Segment 1
if (choice > 10)
{
System.out.println("blue");
}
else if (choice < 5)
{
System.out.println("red");
}
else
{
System.out.println("yellow");
}
Code Segment 2
if (choice > 10)
{
System.out.println("blue");
}
if (choice < 5)
{
System.out.println("red");
}
else
{
System.out.println("yellow");
}
Assume that both code segments initialize choice to the same integer value. Which of the following best describes the conditions on the initial value of the variable choice that will cause the two code segments to produce different output?
choice > 5 and choice < 10
choice > 10
choice == 5 or choice == 10
There is no value for choice that will cause the two code segments to produce different output.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Consider the following partial Person class definition. The instance variable adult should be set to true if the person’s age is at
least 18 years old, and should be set to false otherwise.
public class Person
{
private String name;
private int age;
private boolean adult;
public Person(String n, int a)
{
name = n;
age = a;
if (age >= 18)
{
adult = true;
}
else
{
adult = false;
}
}
// There are no other constructors.
// There may be other methods that are not shown.
}
Which of the following statements, when appearing in a method in a class other than Person, will correctly a
create an instance of a Person object that represents an adult person?
Person p = new Person("Homer", 23);
Person p = new Person("Homer", "23");
Person p = new Person("Homer", true);
Person p = new Person("Homer", 17);
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the following code segment, the int variables a, b, c, and d have been properly declared and initialized.
if (a < b || c != d)
{
System.out.println("dog");
}
else
{
System.out.println("cat");
}
5. Which of the following code segments produces the same output as the given code segment for all values of a, b, c, and d?
if (a < b && c != d)
{
System.out.println("dog");
}
else
{
System.out.println("cat");
}
if (a > b && c == d)
{
System.out.println("cat");
}
else
{
System.out.println("dog");
}
if (a >= b || c == d)
{
System.out.println("cat");
}
else
{
System.out.println("dog");
}
if (a >= b && c == d)
{
System.out.println("cat");
}
else
{
System.out.println("dog");
}
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Consider the following code segment.
int a = 10;
int b = 5 * 2;
System.out.print(a == b);
What is printed as a result of executing the code segment?
10
10 == 10
true
false
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Consider the following code segment. double regularPrice = 100.0; boolean onClearance = true; boolean hasCoupon = false; double finalPrice = regularPrice; if (onClearance) { finalPrice -= finalPrice * 0.25; } if (hasCoupon) { finalPrice -= 5.0; } System.out.println(finalPrice); What is printed as a result of executing the code segment?
20.0
25.0
70.0
75.0
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