Groovy Programming MCQs With Answers

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Groovy Programming Online Quiz

By presenting 3 options to choose from, Groovy Programming Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Groovy Programming Questions and Answers and click over the correct answer.

• Test Name: Groovy Programming MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

Note: Answer of the questions will change randomly each time you start the test. Practice each quiz test at least 3 times if you want to secure High Marks. Once you are finished, click the View Results button. If any answer looks wrong to you in Quizzes. simply click on question and comment below that question. so that we can update the answer in the quiz section.

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Groovy Programming

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1 / 40

What does the ?. operator do in Groovy?

Null coalescing operator

Safe navigation

Dereference operator

2 / 40

How do you comment a single line in Groovy?

//

/* */

#

3 / 40

How do you define a static method in Groovy?

methodName.static()

def static methodName() { ... }

static methodName() { ... }

4 / 40

How do you define a multi-line string in Groovy?

""" ... """

''' ... '''

" ... "

5 / 40

How do you define a range of integers in Groovy?

range(1, 10)

[1, 10]

1..10

6 / 40

How do you convert a number to a string in Groovy?

String(number)

number.toString()

convertToString(number)

7 / 40

What is the correct syntax for calling a superclass constructor in Groovy?

super(arguments)

super.constructor(arguments)

new super(arguments)

8 / 40

What does the findAll method do in Groovy?

Filter elements based on a closure

Find all elements in a collection

Search for a specific element

9 / 40

What is Groovy primarily used for?

Game development

Scripting

Web development

10 / 40

What is the output of println(10 <=> 5) in Groovy?

-1

1

11 / 40

How do you perform string interpolation in Groovy?

"Hello, ${name}!"

"Hello, {name}!"

'Hello, $name!'

12 / 40

What does the eachLine method do in Groovy?

Read user input line by line

Iterate over a list

Process each line in a file

13 / 40

How do you declare a variable in Groovy?

int varName = value

variable varName = value

def varName = value

14 / 40

Which method is used to convert a string to uppercase in Groovy?

upperCase()

toUpperCase()

upper()

15 / 40

Which method is used to remove duplicates from a list in Groovy?

removeDuplicates()

distinct()

unique()

16 / 40

How do you handle exceptions in Groovy?

try { ... } catch (Exception e) { ... }

catch (Exception e) { ... }

handle { ... }

17 / 40

What does the grep method do in Groovy?

Search for a specific element

Filter elements based on a regex

Find all occurrences of a substring

18 / 40

What is the correct syntax for defining a closure with parameters in Groovy?

{ param1, param2 -> ... }

def closure(param1, param2) { ... }

(param1, param2) => ...

19 / 40

Which operator is used for string concatenation in Groovy?

+

&

.

20 / 40

What does the sleep method do in Groovy?

Pause execution for a specified time

Terminate program execution

Print a message

21 / 40

What does the with method do in Groovy?

Perform actions on an object context

Access system properties

Iterate over a collection

22 / 40

What does the findAll method do in Groovy?

Find all elements in a collection

Search for a specific element

Filter elements based on a condition

23 / 40

How do you define a map in Groovy?

Map mapName = [key: value]

def mapName = [key: value]

new Map(key, value)

24 / 40

How do you import a package in Groovy?

import packageName

include packageName

require packageName

25 / 40

How do you define a class in Groovy?

def ClassName = { ... }

new Class ClassName()

class ClassName { ... }

26 / 40

In Groovy, what does println("Hello, World!") do?

Define a function

Print a message

Read user input

27 / 40

What is the purpose of the eachWithIndex method in Groovy?

Filter elements based on a condition

Iterate with index in a collection

Sort elements in a collection

28 / 40

What is the purpose of each method in Groovy?

Define a class

Perform arithmetic operation

Iterate over a collection

29 / 40

Which closure definition is valid in Groovy?

{ param -> ... }

(param) => ...

function(param) { ... }

30 / 40

How do you define a closure in Groovy?

closure myClosure = { ... }

def myClosure = { ... }

function myClosure() { ... }

31 / 40

How do you check if a variable is null in Groovy?

varName == null

checkNull(varName)

isNull(varName)

32 / 40

What is the purpose of the @Grab annotation in Groovy?

Import external libraries

Automatically download dependencies

Define a static field

33 / 40

What does the as keyword do in Groovy?

Create aliases

Define arrays

Cast types

34 / 40

How do you define an enum in Groovy?

Enum Colors { RED, GREEN, BLUE }

enum Colors { RED, GREEN, BLUE }

def Colors = [RED, GREEN, BLUE]

35 / 40

Which keyword is used to define a function in Groovy?

void

def

function

36 / 40

How do you read input from the user in Groovy?

getInput()

readInput()

def userInput = System.console().readLine()

37 / 40

How do you check if a key exists in a map in Groovy?

map.containsKey(key)

key in map

hasKey(key, map)

38 / 40

What is the purpose of the assert statement in Groovy?

Handle exceptions

Print a message

Assert a condition is true

39 / 40

What does the collect method do in Groovy?

Filter elements in a collection

Sort elements in a collection

Transform elements in a collection

40 / 40

What is the correct way to define a list in Groovy?

List listName = [1, 2, 3]

new List(listName)

array listName = [1, 2, 3]

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