The JavaScript String toUpperCase() function is a built-in method that converts all the characters in a string to uppercase letters. It returns a new string with all the alphabetic characters in uppercase format. This function is useful when you want to standardize the case of a string for comparison or display purposes. The toUpperCase() function does not modify the original string, but instead creates a new string with the uppercase characters. It can be called on any string variable or string literal and takes no arguments. Keep reading below to learn how to Javascript String toUpperCase in Kotlin.

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Javascript String toUpperCase in Kotlin With Example Code

JavaScript’s `toUpperCase()` method is used to convert a string to uppercase letters. In Kotlin, we can achieve the same functionality using the `toUpperCase()` extension function provided by the Kotlin standard library.

To use the `toUpperCase()` function, we simply call it on a string variable or string literal. Here’s an example:


val str = "hello, world!"
val upperCaseStr = str.toUpperCase()
println(upperCaseStr) // Output: HELLO, WORLD!

In the above example, we first declare a string variable `str` with the value “hello, world!”. We then call the `toUpperCase()` function on `str` and assign the result to a new variable `upperCaseStr`. Finally, we print the value of `upperCaseStr` to the console, which outputs “HELLO, WORLD!”.

It’s important to note that the `toUpperCase()` function returns a new string with all the characters converted to uppercase. The original string remains unchanged.

In addition to the `toUpperCase()` function, the Kotlin standard library also provides a `toLowerCase()` function to convert a string to lowercase letters.

Overall, using the `toUpperCase()` function in Kotlin is a simple and straightforward way to convert a string to uppercase letters.

Equivalent of Javascript String toUpperCase in Kotlin

In conclusion, the Kotlin programming language provides a convenient and efficient way to convert strings to uppercase using the `toUpperCase()` function. This function works similarly to the equivalent JavaScript `toUpperCase()` function, but with some minor differences in syntax and behavior. With Kotlin, developers can easily manipulate strings and perform various operations on them, including converting them to uppercase. Whether you are a beginner or an experienced developer, Kotlin’s string manipulation capabilities can help you create powerful and efficient applications. So, if you’re looking for a modern and versatile programming language for your next project, consider giving Kotlin a try.

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