UoPeople CS 1102-01 Programming 1 - AY2024-T4 Review Quiz Answers -

Started on
State	Finished
Completed on
Time taken	10 mins 50 secs
Marks	40.00/40.00
Grade	100.00 out of 100.00

Question 1

Correct

Mark 1.00 out of 1.00

Question text

Which of the following is not a valid Java identifier?

myVariable

_variable

123variable

$variable

Question 2

Correct

Mark 1.00 out of 1.00

Question text

Which interface in the Collection Hierarchy maps keys to values and does not allow duplicate keys?

List

Set

Map

Iterator

Question 3

Correct

Mark 1.00 out of 1.00

Question text

What is the purpose of method overloading in Java?

To override superclass methods with more specific implementations.

To create multiple methods with the same name but different parameters.

To limit the number of methods in a class.

To restrict method access to subclasses only.

Question 4

Correct

Mark 1.00 out of 1.00

Question text

Which of the following is the correct way to declare and initialize an array in Java?

CLICK HERE TO JOIN BINGMAT TELEGRAM CHANNEL FOR ALL FREE ANSWERS Join Now

CLICK HERE TO JOIN BINGMAT WHATSAPP CHANNEL FOR ALL FREE ANSWERS Join Now

a. int[ ] numbers = new int[5] {1, 2, 3, 4, 5};

b. int[ ] numbers = {1, 2, 3, 4, 5};

c. int numbers[ ] = new int[ ]{1, 2, 3, 4, 5};

d. int numbers = [1, 2, 3, 4, 5];

Option a and Option b

Option b and Option c

Option c

Option b

Feedback

Your answer is correct.

Question 5

Correct

Mark 1.00 out of 1.00

Question text

What is the result of the following code snippet?

int x = 10;

int y = 5;

boolean result = (x > y) && (x != y);

System.out.println(result);

True

False

Feedback

Your answer is correct.

Question 6

Correct

Mark 1.00 out of 1.00

Question text

What is the purpose of the Iterator interface in the Collection Hierarchy?

To provide a way to iterate over the elements of a collection

To enforce immutability on the collection

To define a generic type for the collection

To enable parallel processing of the collection

Question 7

Correct

Mark 1.00 out of 1.00

Question text

Which of the following statements is true about static nested classes?

They can access non-static methods and variables of the outer class directly.

They can be instantiated without an instance of the outer class.

They can only be declared within static methods.

They can be inherited by the subclasses of the outer class.

Question 8

Correct

Mark 1.00 out of 1.00

Question text

What is the output of the following code snippet?

for (int i = 0; i <= 10; i += 2) {

System.out.print(i + ” “);

}

0 2 4 6 8 10

2 4 6 8 10

0 2 4 6 8

2 4 6 8

Feedback

Your answer is correct.

Also Read Barclay College (Kansas): Programs, Requirements, and How to Apply

Question 9

Correct

Mark 1.00 out of 1.00

Question text

What is the output of the following code snippet?

int[ ] numbers = new int[5];

System.out.println(numbers[3]);

null

error

ArrayIndexOutOfBoundsException

Feedback

Your answer is correct.

Question 10

Correct

Mark 1.00 out of 1.00

Question text

In OOP, what is the purpose of the “this” keyword?

To reference the current object within a method

To declare a variable with class scope

To instantiate a new object

To define a constructor for the class

Question 11

Correct

Mark 1.00 out of 1.00

Question text

What happens when an instance variable with the same name as a static variable is declared in a class?

The instance variable shadows the static variable.

The static variable shadows the instance variable.

Both variables are accessible without any conflict.

It causes a compilation error.

Question 12

Correct

Mark 1.00 out of 1.00

Question text

In Java, method overloading allows developers to:

Override a method inherited from a superclass.

Define multiple methods with the same name but different return types.

Define multiple methods with the same name but different access modifiers.

Define multiple methods with the same name but different parameters.

Question 13

Correct

Mark 1.00 out of 1.00

Question text

Which of the following code snippets correctly demonstrates the creation of an object in Java?

new Object();

Object obj = Object();

Object obj = new Object;

Object obj = new Object();

Feedback

Your answer is correct.

Question 14

Correct

Mark 1.00 out of 1.00

Question text

Which of the following is the correct way to declare a constant variable in Java?

final int PI = 3.14;

const int PI = 3.14;

int PI = 3.14;

static int PI = 3.14;

Feedback

Your answer is correct.

Question 15

Correct

Mark 1.00 out of 1.00

Question text

Which of the following is an advantage of using static methods and variables?

They allow for better encapsulation and information hiding.

They can be overridden in the subclass for polymorphism.

They can be accessed without creating an instance of a class.

They allow for dynamic binding and late binding.

Question 16

Correct

Mark 1.00 out of 1.00

Question text

In Java, what is the benefit of using inheritance?

It allows for code reuse and promotes a hierarchical structure.

It eliminates the need for polymorphism.

It makes code more complex and harder to maintain.

It reduces the performance of the program.

Question 17

Correct

Mark 1.00 out of 1.00

Question text

What is the output of the following code snippet?

int i = 0;

do {

if (i == 3)

continue;

System.out.print(i + ” “);

i++;

} while (i < 5);

0 1 2 3 4

1 2 3 4

0 1 2

0 1 2 3

Feedback

Your answer is correct.

Question 18

Correct

Mark 1.00 out of 1.00

Question text

Which JavaFX class is used to display a web page?

WebView

WebPane

WebDisplay

WebBrowser

Also Read Universidade Estadual de Campinas (Unicamp): Programs, Requirements, and How to Apply

Question 19

Correct

Mark 1.00 out of 1.00

Question text

Which keyword is used to prevent a method from being overridden in the subclass?

final

static

abstract

private

Question 20

Correct

Mark 1.00 out of 1.00

Question text

What is the output of the following code snippet?

int i = 0;

outer:

while (i < 5) {

inner:

for (int j = 0; j < 3; j++) {

if (i == 3)

break outer;

if (j == 2)

continue inner;

System.out.print(i + j + ” “);

}

i++;

}

0 1 2 3 4 5 6 7

0 1 1 2 2 3

0 1 2 3 4 5

0 1 2 4 5 6 7 8

Feedback

Your answer is correct.

Question 21

Correct

Mark 1.00 out of 1.00

Question text

How are constructors used in object-oriented programming?

To define attributes and methods of an object

To allocate memory for object variables

To initialize object attributes with predefined values

To establish communication between classes

Question 22

Correct

Mark 1.00 out of 1.00

Question text

What is the output of the following code snippet?

ArrayList<String> fruits = new ArrayList<>();

fruits.add(“Apple”);

fruits.add(“Orange”);

fruits.add(“Banana”);

System.out.println(fruits.size());

Feedback

Your answer is correct.

Question 23

Correct

Mark 1.00 out of 1.00

Question text

Which of the following statements about inheritance and polymorphism is true in Java?

Inheritance and polymorphism are independent concepts and do not impact each other.

Inheritance is a prerequisite for polymorphism.

Polymorphism can only be achieved through method overloading.

Inheritance and polymorphism cannot be used together in the same program.

Question 24

Correct

Mark 1.00 out of 1.00

Question text

What is the output of the following code snippet?

int x = 5;

int y = 2;

int result = x % y;

System.out.println(result);

Feedback

Your answer is correct.

Question 25

Correct

Mark 1.00 out of 1.00

Question text

To differentiate between a static method and a non-static (instance) method, you would primarily:

Test their execution time

Verify their return type

Determine their association with class or instances

Relate them to their superclass

Question 26

Correct

Mark 1.00 out of 1.00

Question text

How can you create a tool tip in Java Swing?

By calling the setToolTipText() method on the component and passing the tool tip text.

By creating an instance of the ToolTip class and setting its text property.

By calling the addToolTip() method on the component and passing a ToolTip object.

By using the ToolTipManager class to manage tool tips for the component.

Question 27

Correct

Mark 1.00 out of 1.00

Question text

What is the purpose of a JavaFX scene graph?

It defines the structure and layout of a user interface.

It represents the hierarchical structure of all the visual elements in a JavaFX application.

It manages the rendering and animation of visual elements in a JavaFX application.

It handles all the user events and actions in a JavaFX application.

Also Read Universidade Estadual de Campinas (Unicamp): Programs, Requirements, and How to Apply

Question 28

Correct

Mark 1.00 out of 1.00

Question text

Which layout manager in Java Swing allows components to be arranged in a stack-like manner?

FlowLayout

BorderLayout

CardLayout

BoxLayout

Question 29

Correct

Mark 1.00 out of 1.00

Question text

The process of defining a new class based on an existing class is known as:

Inheritance

Polymorphism

Encapsulation

Abstraction

Question 30

Correct

Mark 1.00 out of 1.00

Question text

Which method is used to replace the element at a specific index in an ArrayList in Java?

set()

replace()

modify()

assign()

Question 31

Correct

Mark 1.00 out of 1.00

Question text

Which access modifier allows a class member to be accessed only within the same class?

public

private

protected

default (no modifier)

Question 32

Correct

Mark 1.00 out of 1.00

Question text

What is the output of the following code snippet?

int[] numbers = {5, 2, 7, 1, 8};

Arrays.sort(numbers);

System.out.println(numbers[2]);

Feedback

Your answer is correct.

Question 33

Correct

Mark 1.00 out of 1.00

Question text

What is the output of the following code snippet?

int[ ] numbers = {5, 2, 8, 1, 3};

Arrays.sort(numbers);

System.out.println(numbers[0]);

Feedback

Your answer is correct.

Question 34

Correct

Mark 1.00 out of 1.00

Question text

Which method of the Thread class is used to check if a thread is still active and running?

isAlive()

isActive()

isRunning()

isExecuting()

Question 35

Correct

Mark 1.00 out of 1.00

Question text

Which Stream API operation is used to apply a function to each element and transform it into another element?

map()

filter()

reduce()

collect()

Question 36

Correct

Mark 1.00 out of 1.00

Question text

Which interface in the Collection Hierarchy allows duplicate elements and maintains insertion order?

List

Set

Map

Iterator

Question 37

Correct

Mark 1.00 out of 1.00

Question text

When using a do-while loop, the code block is executed:

zero or more times

at least once

based on a specific condition

until the loop variable reaches a certain value

Question 38

Correct

Mark 1.00 out of 1.00

Question text

What is the significance of inheritance in object-oriented programming?

It allows objects to communicate with each other.

It ensures that attributes and methods are defined within a class.

It enables the creation of subclasses that inherit characteristics from a parent class.

It facilitates the encapsulation of data and behavior within objects.

Question 39

Correct

Mark 1.00 out of 1.00

Question text

Which JavaFX class is used to display text and images?

Text

Label

Button

Image

Question 40

Correct

Mark 1.00 out of 1.00

Question text

Which keyword is used to skip the remaining code in the loop and continue with the next iteration?

exit

skip

break

continue

UoPeople CS 1102-01 Programming 1 – AY2024-T4 Review Quiz Answers

Question 1

Question text

Question 2

Question text

Question 3

Question text

Question 4

Question text

Feedback

Question 5

Question text

Feedback

Question 6

Question text

Question 7

Question text

Question 8

Question text

Feedback

Question 9

Question text

Feedback

Question 10

Question text

Question 11

Question text

Question 12

Question text

Question 13

Question text

Feedback

Question 14

Question text

Feedback

Question 15

Question text

Question 16

Question text

Question 17

Question text

Feedback

Question 18

Question text

Question 19

Question text

Question 20

Question text

Feedback

Question 21

Question text

Question 22

Question text

Feedback

Question 23

Question text

Question 24

Question text

Feedback

Question 25

Question text

Question 26

Question text

Question 27

Question text

Question 28

Question text

Question 29

Question text

Question 30

Question text

Question 31

Question text

Question 32

Question text

Feedback

Question 33

Question text

Feedback

Question 34