Kotlin Class: Data class point with destructuring declaration

Last update on December 20 2024 12:55:10 (UTC/GMT +8 hours)

Write a Kotlin program that creates a data class 'Point' with properties for x and y coordinates. Use a destructuring declaration to extract the coordinates.

Sample Solution:

Kotlin Code:

data class Point(val x: Int, val y: Int)

fun main() {
    val point = Point(12, 20)
    
    val (x, y) = point  // Destructuring declaration
    
    println("Coordinates: x = $x, y = $y")
}

Sample Output:

Coordinates: x = 12, y = 20

Explanation:

In the above exercise -

• First we define a data class "Point" with properties for x and y coordinates. The data modifier automatically generates useful functions such as toString, equals, and hashCode for the class.
• In the "main()" function, we create an instance of Point with x coordinate as 12 and y coordinate as 20.
• The line val (x, y) = point is a destructuring declaration. It allows us to extract the values of x and y properties from the point object and assign them to the variables x and y respectively.
• Finally, we print the extracted coordinates using the println() function.

Kotlin Editor:

Previous: Logger class with companion object for logging.
Next: Enum class Color for Object color representation.