Kotlin Throw Keyword

by Online Tutorials Library July 14, 2022

Kotlin throw keyword

Kotlin throw keyword is used to throw an explicit exception. It is used to throw a custom exception.

To throw an exception object we will use the throw-expression.

Syntax of throw keyword

Kotlin throw example

Let’s see an example of throw keyword in which we are validating age limit for driving license.

  fun main(args: Array<String>) {      validate(15)      println(“code after validation check…”)  }  fun validate(age: Int) {      if (age < 18)          throw ArithmeticException(“under age”)      else          println(“eligible for drive”)  }  

Output:

Exception in thread "main" java.lang.ArithmeticException: under age

Next TopicKotlin Nullable Non Nullable Types

Kotlin Throw Keyword

Kotlin throw keyword

Syntax of throw keyword

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