Convert String to Long in Kotlin with example

Let’s declare an array in Kotlin

    val array = arrayOf("a", "b", "c", "d")

Print an array using the println function.

println(array)

It outputs

[Ljava.lang.String;@7cc355be

It is difficult to inspect the values of an array during debugging with this. Then, How to print my Kotlin array object without getting “type@hashcode”?

This tutorial explains how to print the array of elements to the console.

How to Print array elements in Kotlin with an example

Multiple ways to log an array of items in Kotlin

Use for loop

The for in loop iterates each element in an array and prints element to the console using the println function.

Itis a native and basic way of iterating each element in an array.

import java.util.Arrays

fun main() {
    val array = arrayOf("a", "b", "c", "d")
    for (item in array) {
        println(item)
    }
}

Output:

a
b
c
d

using to Arrays.toString method

Arrays has an inbuilt toString method that takes an array variable and prints the values.

It is an easy and way to print without iterating each element.

import java.util.Arrays

fun main() {
    val array = arrayOf("a", "b", "c", "d")
    println(Arrays.toString(array))
}

Output

[a, b, c, d]

Array joinToString method

The joinToString method takes a separator,iterates each element, appends, and returns the string.

fun main() {
    val array = arrayOf("a", "b", "c", "d")
    println(array.joinToString(" "))
}

forEach method

forEach🔗 takes lambda expression. It iterates each element, applies a function, and calls the body inside it.

fun main() {
    val array = arrayOf("a", "b", "c", "d")
    // lambda expression
    array.forEach { println(it) }
    //using method reference syntax
    array.forEach(System.out::print)
}

When the above program prints,

a
b
c
d
abcd

Array contentToString function

contentToString() function prints the array elements. It prints the string representation of each element and displays it to console.

fun main() {
    val array = arrayOf("a", "b", "c", "d")
    println(array.contentToString())// [a, b, c, d]

}

How to Print Array of Strings or Integers

An array of strings or integers printed with the above approach.

Here is an example

fun main() {
    val numbers = intArrayOf(11, 12, 13, 14, 15)
    println(numbers.contentToString())

}

Outputs:

[11, 12, 13, 14, 15]