How to Check if a String contains given Substring in Kotlin - Step by Step Examples

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How to Check if a String contains given Substring in Kotlin ?

Answer

To check if a string contains a given substring in Kotlin, you can use the 'contains' method of the String class.

✐ Examples

1 Check if a String contains given Substring using 'contains' method

In this example,

We create a function 'containsSubstring' that takes a string and a substring as input.
We use the 'contains' method of the string object to check if the substring is present in the string.
If the substring is found, 'true' is returned; otherwise, 'false'.
Finally, we print the result.

Kotlin Program

fun containsSubstring(str: String, substr: String): Boolean {
    return str.contains(substr)
}

fun main() {
    val str = "Hello World"
    val substr = "World"
    val contains = containsSubstring(str, substr)
    println("String contains substring '$substr': $contains")
}

Output

String contains substring 'World': true

Summary

In this tutorial, we learned How to Check if a String contains given Substring in Kotlin language with well detailed examples.