How to Remove Special Characters from a String in Kotlin - Step by Step Examples

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How to Remove Special Characters from a String in Kotlin ?

Answer

To remove special characters from a string in Kotlin, you can use the replace method with a regular expression.

✐ Examples

1 Remove Special Characters from String Using Regex

In this example,

We create a string named str with a value containing special characters.
We use the replace method on str with a regular expression that matches any non-alphanumeric character.
The replace method replaces all matches of the regular expression with an empty string.
Finally, we print the resulting string to standard output.

Kotlin Program

fun main() {
    val str = "Hello, World! Welcome to Kotlin@2024."
    val cleanStr = str.replace(Regex("[^A-Za-z0-9 ]"), "")
    println("Original String: $str")
    println("Cleaned String: $cleanStr")
}

Output

Original String: Hello, World! Welcome to Kotlin@2024.
Cleaned String: Hello World Welcome to Kotlin2024

2 Remove Special Characters from Another String Using Regex

In this example,

We create a string named input with a value containing various special characters.
We use the replace method on input with a regular expression that matches any character that is not a letter or a digit.
The replace method removes all such characters, leaving only alphanumeric characters and spaces.
Finally, we print the cleaned string to standard output.

Kotlin Program

fun main() {
    val input = "Kotlin#1! Developer$%@"
    val output = input.replace(Regex("[^A-Za-z0-9 ]"), "")
    println("Original Input: $input")
    println("Cleaned Output: $output")
}

Output

Original Input: Kotlin#1! Developer$%@
Cleaned Output: Kotlin1 Developer

Summary

In this tutorial, we learned How to Remove Special Characters from a String in Kotlin language with well detailed examples.

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How to Remove Special Characters from a String in Kotlin - Step by Step Examples

How to Remove Special Characters from a String in Kotlin ?

Answer

✐ Examples

1 Remove Special Characters from String Using Regex

Kotlin Program

Output

2 Remove Special Characters from Another String Using Regex

Kotlin Program

Output

Summary

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