Q141
Open questionval short for Value, a constant which cannot be changed once assigned?
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Computer Science · all questionsKotlin Programming MCQ for Competitive Exams, Interviews, and Certifications
Kotlin Programming MCQ for Competitive Exams, Interviews, and Certifications
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Q142
Open questionThe function typeChecker receiver a parameter obj of type Any. Based upon the type of obj, it prints different messages for Int, String, Double, and Float types; if not any of the mentioned types, it prints "unknown type". What operator allows you to determine the type of an object?
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Q143
Open questionYou have created a class that should be visible only to the other code in its module. Which modifier do you use?
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Q144
Open questionYou are upgrading a Java class to Kotlin. What should you use to replace the Java class's static fields?
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Q145
Open questionYou are writing a console app in Kotlin that processes test entered by the user. If the user enters an empty string, the program exits. Which kind of loop would work best for this app? Keep in mind that the loop is entered at least once
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Q146
Open questionYou are attempting to assign an integer variable to a long variable, but Kotlin compiler flags it as an error. Why?
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Q147
Open questionWhich line of code shows how to display a nullable string's length and shows 0 instead of null?
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Q148
Open questionKotlin interfaces and abstract classes are very similar. What is one thing abstract class can do that interfaces cannot?
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Q149
Open questionInside an extension function, what is the name of the variable that corresponds to the receiver object
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Q150
Open questionWhich is the proper way to declare a singleton named DatabaseManager?
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Q151
Open questionWhich line of code shows how to call a Fibonacci function, bypass the first three elements, grab the next six, and sort the elements in descending order?
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Q152
Open questionHow many different kinds of constructors are available for kotlin classes?
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Q153
Open questionIf a class has one or more secondary constructors, what must each of them do?
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Q154
Open questionWhen can you omit the constructor keyword from the primary constructor?
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Q155
Open questionWhich of the following targets are currently not supported by Kotlin?
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Q156
Open questionWhich of the following constructors are available in Kotlin?
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Q157
Open questionYou have created an array to hold three strings. When you run the code below, the compiler displays an error. Why does the code fail?
val names = arrayOf(3) names[3]= "Delta"Select an option to see the answer and solution.
Q158
Open questionWhich keyword is used to define an immutable variable?
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Q159
Open questionIs Kotlin interoperable with Java programming language?
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Q160
Open questionWhich of the following options is used to write null-safe code in Kotlin?
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