Describe the syntax for declaring a data class and give an example scenario where coders use data classes.Įxample answer: 'A data class is a special class in Kotlin that holds data. Kotlin autogenerates helpful methods, such as equals(), hashCode() and toString(), depending on the class's properties. Explain that these are convenient ways to create classes that hold data. What do you understand by data class?Įmployers ask this question to assess your knowledge of data classes, a unique feature of Kotlin. The main() function helps create and run Kotlin programs.'įind Kotlin developer jobs 4. For example, you can declare the main() function “fun main(args: Array) ”. To declare the main() function in Kotlin, you use the fun keyword, then add the function name main and include the arguments it takes. This function takes an array of strings as an argument, which helps pass command-line arguments to the program. It's the computer's first function after a coder runs the program. Describe the syntax for declaring and calling the main() function in a Kotlin program to show further knowledge of the entry point.Įxample answer: 'The main() function is the entry point of Kotlin programs. In your response, explain the first function the code executes when a programmer runs this program. Interviewers ask this question to test your understanding of the main() function, which is the entry point of Kotlin programs. Define the entry point of Kotlin programs Related: Coding for beginners: a comprehensive guide with salary info 3. For example, you can declare a variable with the title “age” and assign it a value of 25, such as “val age = 25”.' To declare a variable in Kotlin, use the var or val keyword and add the variable name and value. Lazy is for values coders compute after accessing them for the first time. Coders use const for compile-time constants they can't change at runtime. Programmers use val for immutable variables that they can't change, while var is for mutable variables that they can change. Discuss the differences between these variable types, such as immutability, mutability and compile-time constants.Įxample answer: 'In Kotlin, several variable types exist, including val, var, const and lazy. Explain the different variable types in Kotlin, such as val, var, const and lazy, and describe how you declare them. Hiring managers ask this question to test your knowledge of Kotlin variable types and determine your ability to declare them. Explain the different Kotlin variable types and how you declare them Related: 9 highest-paying programming languages to learn (with tips) 2. Some key features of Kotlin include null safety, extension functions and coroutines, which help developers write safer and more efficient code.' It's a product of JetBrains, and its design makes it more concise and expressive than Java, making it easier and faster to write code. Mention some features that make Kotlin unique, such as null safety, extension functions and coroutines.Įxample answer: 'Kotlin is a modern programming language that helps you develop software, such as Android and server-side applications. Explain that Kotlin is a programming language that programmers execute using static typing to run on the Java Virtual Machine (JVM) and Android devices. What is Kotlin?Įmployers ask this question to determine whether you have a basic understanding of the Kotlin programming language. Here are nine examples of Kotlin interview questions to help you prepare for your IT role interview: 1. 9 Kotlin interview questions and sample responses Please note that none of the companies, institutions or organisations mentioned in this article are affiliated with Indeed. In this article, we discuss nine Kotlin interview questions, explain why hiring managers ask them and provide example answers for your reference. Understanding interview questions about Kotlin can help you practise your answers and convince employers of your computer language proficiency. Kotlin helps create applications and offers more features and benefits than other programming languages. Hiring managers ask information technology (IT) job candidates various interview questions to evaluate their proficiency in programming languages, such as Kotlin.
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