How to keep only Alphabets in a String in Kotlin - Step by Step Examples

How to keep only Alphabets in a String in Kotlin ?

Answer

To keep only alphabets in a string in Kotlin, you can use the replace() function with a regular expression that matches non-alphabetic characters and replaces them with an empty string.

✐ Examples

1 Keep Only Alphabets in "Hello123 World"

In this example,

We create a string named str1 with a value of "Hello123 World".
We use the replace() function with a regular expression "[^a-zA-Z]" to replace non-alphabetic characters with an empty string.
Finally, we print the modified string str1.

Kotlin Program

fun main() {
    var str1 = "Hello123 World"
    str1 = str1.replace("[^a-zA-Z]".toRegex(), "")
    println("Modified string: $str1")
}

Output

Modified string: HelloWorld

2 Keep Only Alphabets in "apple@banana"

In this example,

We create a string named str2 with a value of "apple@banana".
We use the replace() function with a regular expression "[^a-zA-Z]" to replace non-alphabetic characters with an empty string.
Finally, we print the modified string str2.

Kotlin Program

fun main() {
    var str2 = "apple@banana"
    str2 = str2.replace("[^a-zA-Z]".toRegex(), "")
    println("Modified string: $str2")
}

Output

Modified string: applebanana

Summary

In this tutorial, we learned How to keep only Alphabets in a String in Kotlin language with well detailed examples.

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How to keep only Alphabets in a String in Kotlin - Step by Step Examples

How to keep only Alphabets in a String in Kotlin ?

Answer

✐ Examples

1 Keep Only Alphabets in "Hello123 World"

Kotlin Program

Output

2 Keep Only Alphabets in "apple@banana"

Kotlin Program

Output

Summary

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