def datatype(x:Float){
println("The parameter is of Float data type")
}
def datatype(x:Char){
println("The parameter is of Character data type")
}
def datatype(x: Boolean){
println("The parameter is of Boolean data type")
}
def main(args: Array[String]) {
datatype(4.0f)
}
}1.The parameter is of Boolean data type
2.The parameter is of Integer data type
3.The parameter is of Character data type
4.The parameter is of Float data type
Posted Date:-2022-11-27 12:51:00
2-D structures in Scala can be looped using -
1.Nested Loop
2.Structure
3.Collection iteration
4.None of these
Posted Date:-2022-11-27 12:35:37
Output of the following block of code -
for(i <- 1 to 2){
for(j <- 1 to 2)
print("(" + i + "," + j + ") ")
}1.(1,1) (1,1) (1,1) (1,1)
2.(1,1) (1,2) (2,1) (2,2)
3.(1,1) (2,2) (1,1) (2,2)
4.None of these
Posted Date:-2022-11-27 12:37:08
The break statement in Scala is imported using -
1.import scala.util.control._
2.import scala.break
3.import control
4.None of these
Posted Date:-2022-11-27 12:38:26
Array in Scala is -
1.A primary data type
2.Stream of data from I/O
3.Linear data structure with a fixed number of elements
4.All of the above
Posted Date:-2022-11-27 13:14:56
Can Lambda expressions be used on collections in Scala?
1.Yes
2.No
3.Error
4.None of These
Posted Date:-2022-11-27 13:06:12
Can there be multiple counters in a for loop in Scala?
1.Yes
2.No
3.Error
4.None of These
Posted Date:-2022-11-27 12:40:32
Can you alter the sequence of parameter passing?
1.Yes
2.No
3.Error
4.None of these
Posted Date:-2022-11-27 12:56:57
Closures in Scala are -
1.Functions that return multiple values
2.Functions that can accept variable arguments
3.Functions that use a value from outside of the function's body
4.None of the above
Posted Date:-2022-11-27 12:59:28
Conditional statement in Scala executes a block of code based on some conditional value?
1.True
2.False
3.Error
4.None of These
Posted Date:-2022-11-27 12:24:20
Correct syntax for creating an array in Scala -
1.var array_name : Array[data_type] = new Array[data_type(size)
2.var array_name: Array[data_tpye] = new Array(size)
3.var array_name = Array(element1, elmenet2, element3, ...)
4.All of the above
Posted Date:-2022-11-27 13:16:33
How to create a mutable array in Scala?
1.Initializing using the var keyword
2.Using arrayBuffer
3.Adding mutable before initialization
4.All of the above
Posted Date:-2022-11-27 13:19:49
Ignored variables are used to -
1.Create variables without using names
2.Create blank value variable
3.Both A and B
4.None of these
Posted Date:-2022-11-27 12:19:26
Is array mutable in Scala?
1.Yes
2.No
3.Error
4.None of these
Posted Date:-2022-11-27 13:18:07
Lambda expression stores the value of -
1.Variable
2.Constant
3.Function
4.None of These
Posted Date:-2022-11-27 13:05:25
List in Scala is -
1.Primary data structure
2.The collection that stores data as a string
3.A collection that stores data in the form of a linked-list
4.None of these
Posted Date:-2022-11-27 13:23:03
Method overloading in Scala is?
1.Creating multiple methods performing the same task
2.Redefining methods in different ways under the same name
3.Creating methods differently
4.All of these
Posted Date:-2022-11-27 12:49:40
Method used to check if a list is empty in Scala -
1.list.isEmpty
2.list.isNull
3.list.empty
4.None of These
Posted Date:-2022-11-27 13:24:22
Method used to get the length of array in Scala -
1.Array.len
2.length(arr)
3.arr.size
4.sizeof(arr)
Posted Date:-2022-11-27 13:22:05
Methods which can be used to remove/ delete users from arrayBuffer in Scala?
1.arrayBuffer.remove()
2.arrayBuffer.delete()
3.arrayBuffer.push()
4.All of the above
Posted Date:-2022-11-27 13:20:40
Recursion function is -
1.A function that calls itself multiple times
2.Has a loop statement
3.All of these
4.None of These
Posted Date:-2022-11-27 12:45:24
Tail recursion in Scala is -
1.Initiated from last
2.Initiated from the first call
3.both (a) and (b)
4.None of These
Posted Date:-2022-11-27 12:52:57
The default parameters are used when -
1.No parameter is passed
2.The extra parameter is passed
3.Always when the function is called
4.None of These
Posted Date:-2022-11-27 12:42:23
The do-while loop in Scala is -
1.Iteration control Loop
2.Entry control loop
3.Exit control loop
4.None of These
Posted Date:-2022-11-27 12:27:13
The following code statement will - import java.util._
1.import _ method from util library
2.Error
3.Import all methods from java.util library
4.None of these
Posted Date:-2022-11-27 12:22:25
The for loop in Scala is -
1.Iteration control loop
2.Entry control loop
3.Exit control loop
4.None of These
Posted Date:-2022-11-27 12:28:27
The output of the code block of code is -
var myNumber = 5 ;
if(myNumber > 20)
print("A");
else if(myNumber > 15)
print("B");
else
print("C");1.A
2.B
3.C
4.None of These
Posted Date:-2022-11-27 12:26:08
The output of the following block of code is -
class Student{
var roll = 43;
def printTotal(){
var totalMarks = 500
println(roll)
}
}
object MyClass{
def main(args:Array[String]) {
var s1 = new Student
println(s1.totalMarks)
}
}1.500
2.300
3.Error
4.None of these
Posted Date:-2022-11-27 12:15:25
The output of the following block of code is -
object Demo {
def sub( a:Int, b:Int ) = {
println( (a-b) );
}
def main(args: Array[String]) {
sub(b = 5, a = 7);
}
}1.-2
2.2
3.Error
4.None of these
Posted Date:-2022-11-27 12:58:05
The output of the following block of code is -
object Demo {
def welcome( a: Int = 54, b: Int = 21 ){
println(a + b);
}
def main(args: Array[String]) {
welcome(5);
}
}
1.75
2.59
3.26
4.10
Posted Date:-2022-11-27 12:43:33
The output of the following block of code is -
var myVar = 12;
print(myVar);
while(myVar <= 10){
print("*");
myVar += 2;
}1.12
2.12****
3.12*
4.None of These
Posted Date:-2022-11-27 12:34:14
The output of the following block of code will be -
object myObject {
var multiplier = 5;
def main(args: Array[String]) {
println(calculator(45));
}
val calculator = (i:Int) => i * multiplier;
}1.45
2.5
3.Error
4.225
Posted Date:-2022-11-27 13:00:33
The output of the following code is -
object MyClass{
def main(args:Array[String]) {
var a = 43
a += 4
a -= 3
println(a)
}
}
1.43
2.44
3.45
4.None of these
Posted Date:-2022-11-27 12:18:03
To create a loop breakable in Scala, do we need to enclose it?
1.break
2.loop.breakable
3.breaks
4.None of these
Posted Date:-2022-11-27 12:41:25
Unit value in Scala is -
1.Used as a return statement when no value is returned to it.
2.The function automatically returns a unit value when no value is returned.
3.Returned using Unit keyword
4.All of these
Posted Date:-2022-11-27 13:12:30
Ways to define a composite function in Scala are -
1.Compose keyword
2.andthen keyword
3.Passing method to another method
4.All of the above
Posted Date:-2022-11-27 13:07:14
What are expressions in Scala?
1.Line of code that compiles to a value
2.Code block without semicolon
3.Line of code containing = sign
4.None of these
Posted Date:-2022-11-27 12:23:43
What is the chopping of string -
1.Divide the string into two equal halves
2.Strip off new line characters
3.Extract substring from a given index
4.None of these
Posted Date:-2022-11-27 13:09:26
What is the maximum number of parameters a method can accept?
1.32
2.64
3.128
4.255
Posted Date:-2022-11-27 12:53:54
What is the output of the following block of code -
object myObject {
def main(args: Array[String]) {
println(( div(mul(452)) ))
}
val mul = (a: Int)=> {
a * 100
}
val div = (a: Int) =>{
a / 500
}
}1.45200
2.0
3.90
4.Error
Posted Date:-2022-11-27 13:08:02
Which is valid to method to increase value of variable by one?
1.a++
2.++a
3.a += 1
4.All of these
Posted Date:-2022-11-27 12:17:21
Which of these can be solved using recursion?
1.Factorial
2.Fibonacci
3.Both A and B
4.None of these
Posted Date:-2022-11-27 12:46:07
Which of these is not a conditional statement in Scala?
1.if statement
2.if-else statement
3.This statement
4.None of these
Posted Date:-2022-11-27 12:25:10
Which of these parts of the declaration are not required in the case of parameter less methods?
1.def keyword
2.Return type
3.Parenthesis ()
4.All of the above
Posted Date:-2022-11-27 13:02:05
Which of these ways of invoking a method are valid in Scala?
1.Using . operator
2.Using direct name call by other methods of the same class
3.Using inheritance
4.All of the above
Posted Date:-2022-11-27 13:04:09
Which Scala keyword is used to create an array?
1.Arr
2.array
3.Array
4.All of the above
Posted Date:-2022-11-27 13:15:39
Which statement in Scala is used to create a tail-recursive function -
1.@newtailRec
2. @tailRecFunc
3.@tailRec
4.@tailrec
Posted Date:-2022-11-27 12:51:58
Which syntax to pass the variable argument to function in Scala?
1.(int a, int b, int c, ….)
2.(a : Int, b : Int, c:Int, …)
3.(args: String*)
4.None of these
Posted Date:-2022-11-27 12:56:09
Wildcard patterns (_) is used to -
1.Create variables
2.Create new unmatched patterns
3.Match the unmatched case
4.None of these
Posted Date:-2022-11-27 12:20:17
Yield in Scala is used to -
1.Returns the resultant value of for loop
2.Stores a variable at each for loop iteration
3.Used with for loop
4.All of the above
Posted Date:-2022-11-27 12:39:30