Identifiers in Scala are names given to -
1.Classes or objects
2.Methods
3.Objects
4.All of these
Posted Date:-2022-11-27 11:46:46
Is 'sealed' a keyword in Scala -
1.Yes
2.No
3.Error
4.None of These
Posted Date:-2022-11-27 11:45:38
Is the following identifier valid? 12Scala_3
1.Yes
2.No
3.Error
4.None of these
Posted Date:-2022-11-27 11:56:05
Scala programming language was developed by -
1.James Gosling
2.Martin Odersky
3.Dennis MacAlistair Ritchie
4.Guido van Rossum
Posted Date:-2022-11-27 10:26:13
The correct syntax for creating Single line comments in Scala is,
1.//
2.<!-- -- >
3./* */
4.%%
Posted Date:-2022-11-27 11:00:49
The semicolon (;) in Scala is -
1.Necessary, failing to write will not mark the end of line
2.Not required, it is treated as a character
3.Optional, end of the line does not require ;
4.None of these
Posted Date:-2022-11-27 10:57:46
The total number of keywords in Scala are -
1.45
2.34
3.39
4.52
Posted Date:-2022-11-27 11:42:52
What is the scope of a local variable in Scala?
1.Whole program
2.A method is it declared in
3.Class/object containing it
4.All of the above
Posted Date:-2022-11-27 12:11:58
Which of these is not a primary data type in Scala -
1.Integer
2.String
3.Array
4.Char
Posted Date:-2022-11-27 11:04:05
A final method can be applied on?
1.Variables
2.Classes
3.Functions
4.All of the above
Posted Date:-2022-11-27 12:10:57
Based on Type Casting, which of these conversions is lossy or invalid?
1.Character -> Float
2.Float -> Long
3.Short -> Integer
4.Integer -> Double
Posted Date:-2022-11-27 11:25:48
Converting Character to Integer will return
1.Error
2.Random integer value
3.ASCII value of the character
4.None of the above
Posted Date:-2022-11-27 11:39:19
Default values of string type when it is not initialized -
1.0
2.Null
3.None
4." "
Posted Date:-2022-11-27 11:10:17
Explicit Conversion is -
1.Done by the compiler itself
2.Defined by the user
3.Both A and B
4.None of the above
Posted Date:-2022-11-27 11:28:04
Find the result of the following code block - (3 + 4 * 5) >>> 1
1.43
2.11
3.12
4.120
Posted Date:-2022-11-27 12:05:01
How many types of operators are present in Scala?
1.5
2.2
3.6
4.8
Posted Date:-2022-11-27 12:00:40
In Scala, can you return two values?
1.Yes
2.No
3.Error
4.None of These
Posted Date:-2022-11-27 11:12:47
Is Java required before installing Scala on the system?
1.Yes
2.No
3.Error
4.None of these
Posted Date:-2022-11-27 10:56:40
Lazy initialization is -
1.Creating variables using the lazy keyword
2.Done only on immutable variables
3.Calculated at its first access
4.All of the above
Posted Date:-2022-11-27 11:42:01
Literal Identifier is -
1.String literal used as an identifier in Scala
2.Value literal used as an identifier in Scala
3.Numeric literal used as an identifier in Scala
4.None of These
Posted Date:-2022-11-27 11:57:43
Literals in Scala are ___.
1.Name of the variables
2.A literal is a value that can be assigned to a variable
3.The type of the values
4.None of these
Posted Date:-2022-11-27 11:24:34
Logical operators in Scala are used to -
1.Perform a comparison of values
2.Perform logical operation on the boolean value
3.Return a value
4.None of These
Posted Date:-2022-11-27 12:01:55
Relation operators are -
1.Return a relative value
2.Used to define the comparison between the two operators
3.Create new values based on the relation
4.None of These
Posted Date:-2022-11-27 12:06:50
Scala stands for ___.
1.Scalable language
2.Scripted advanced language
3.Sequential language
4.None of These
Posted Date:-2022-11-27 10:54:57
Statement returned by function when no values are returned in Scala - None of these
1.No value
2.Unit
3.Int
4.None of These
Posted Date:-2022-11-27 11:12:02
The correct output of the below code block is -
object MyClass {
def main(args: Array[String]) {
var a : Float = 454.32138988f
var b : Double = a;
printf("a = " + a + " b = " + b)
}
}1.a = 454.32138988 b = 454.32138988152344
2.a = 454.32138 b = 454.3213806152344
3.a = 454.32138 b = 454.32138
4.Error
Posted Date:-2022-11-27 11:09:13
The correct output of the following code is -
object myObject {
def main(args: Array[String]) {
var _value1 = 54
var 3value_2 = 65
println("The sum of two values is " + (_value1 + value_2))
}
}
1.54
2.Error
3.119
4.65
Posted Date:-2022-11-27 11:58:45
The correct output of the following code is,
object MyClass {
def main(args: Array[String]) {
var i,j=0
for(i <- 0 to 3){
for(j <- 0 until 2){
if(i + j == 3){
print((i*j)+" ")
}
}
}
}
}1.3 3
2.2 0
3.0 2
4. 1 1
Posted Date:-2022-11-27 11:02:28
The final keyword in Scala is used to -
1.Define a variable whose value cannot be further changed
2.Create a new variable
3.Special inaccessible value in Scala
4.None of these
Posted Date:-2022-11-27 12:10:09
The getClass() method is used to -
1.Extract the class of the given number
2.Extract the value of the variable
3.Extract the memory location of the variable
4.All of the Above
Posted Date:-2022-11-27 11:29:21
The Scala compiler starts executing from -
1.The first line of code
2.main() method
3. main class
4.End of code
Posted Date:-2022-11-27 10:58:45
The size of integer data type in Scala is -
1.256 bits
2.4 bits
3.32 bits
4.64 bits
Posted Date:-2022-11-27 11:05:01
Using a keyword as a value will lead to -
1.Error
2.Compile with the NULL value
3.Warning
4.None of the above
Posted Date:-2022-11-27 11:44:50
What is the output of following code? val i = 43 i = 231 printf(i)
1.231
2.43
3.0
4.Error
Posted Date:-2022-11-27 11:23:24
What is the paradigm of the Scala programming language?
1.Object-oriented
2.Statically Types
3.Functional
4.All of the above
Posted Date:-2022-11-27 10:53:57
What is the range defined by the below statement - range(13, 17, 2)
1.13 14 15 16 17
2.13 14 15 16
3.13 15
4.13 15 17
Posted Date:-2022-11-27 11:14:55
What is the symbolic operator in Scala?
1.Predefined sets that can handle a specific task
2.Are reserved to a specific use
3.Symbols that have a specific task that they perform when called in a Scala program
4.All of these
Posted Date:-2022-11-27 12:08:48
What is the use of the "&=" operator in Scala -
1.Bitwise operator
2.Arithmetic operator
3.Bitwise Assignment operator
4.None of these
Posted Date:-2022-11-27 12:04:14
Which class is the super-class of all classes in Scala?
1.Ref
2.AnyRef
3.Any
4.AnyVar
Posted Date:-2022-11-27 11:07:09
Which is not a Scala method for printing text on the screen?
1.print()
2.printf()
3.printl()
4.println()
Posted Date:-2022-11-27 11:22:07
Which of the following are not present in Scala?
1.Closures
2.Monads
3.Traits
4.None of these
Posted Date:-2022-11-27 10:59:27
Which of the following is not a feature of Scala?
1.Type inference
2.Lazy Computation
3.High order function
4.None of the above
Posted Date:-2022-11-27 10:55:47
Which of these is not a keyword in Scala?
1.int
2.var
3.forsome
4.package
Posted Date:-2022-11-27 11:43:40
Which of these is not a type of identifier -
1.Alphanumeric identifier
2.Operator identifier
3.Literal identifier
4.Value identifier
Posted Date:-2022-11-27 11:48:03
Which Scala keyword is used to initialize a variable?
1.int
2.var
3.value
4.None
Posted Date:-2022-11-27 11:40:26
Which type class does not inherit AnyVar?
1.Char
2.Int
3.Float
4.Pointer
Posted Date:-2022-11-27 11:08:00
Which type in Scala is a subtype of all types -
1.Int
2.Ref
3.Boolean
4.Nothing
Posted Date:-2022-11-27 11:11:08
Which type of typecasting is done by the compiler?
1.Implicit Conversion
2.Explicit Conversion
3.Instance conversion
4.None of these
Posted Date:-2022-11-27 11:27:03
Which variable in Scala can save memory while declaring variables?
1.Mutable variables
2.Lazy Variables
3.Inherited Variables
4.None of these
Posted Date:-2022-11-27 12:00:09
Why is Double better than Float values?
1.It can store double-precision values providing more accurate data to be stored.
2.It stores 64 bits values instead of 32 bits from a float.
3.Float Values are better
4.Both A and B
Posted Date:-2022-11-27 11:06:04