Lära Boolean Type | Core Data Types

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In Kotlin, the Boolean type represents logical values and is used to express conditions that can only be either true or false. Boolean variables are fundamental in controlling the flow of your program, especially when you want to make decisions based on certain conditions. Common use cases for Boolean values include conditional statements such as if, when, and loops that need to repeat until a condition is met. You declare a Boolean variable using the Boolean type, and assign it either the value true or false.

Main.kt


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package com.example

fun main() {
    val isKotlinFun: Boolean = true
    val isJavaScriptTyped: Boolean = false

    if (isKotlinFun) {
        println("Kotlin is fun!")
    } else {
        println("Kotlin is not fun.")
    }

    if (isJavaScriptTyped) {
        println("JavaScript is statically typed.")
    } else {
        println("JavaScript is not statically typed.")
    }
}

In this example, you see how Boolean values work in Kotlin. The variable isKotlinFun is set to true, and isJavaScriptTyped is set to false. When the program runs, the if statement checks the value of isKotlinFun. Since it is true, the message "Kotlin is fun!" is printed. The else branch is skipped. Next, the program checks isJavaScriptTyped. Because it is false, the message "JavaScript is not statically typed." is printed. This demonstrates how Boolean values directly determine which parts of your code are executed, making them essential for controlling program flow.

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