Question 193078 in Android Studio Question posted in
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Android Studio – Using kotlin 1.8.22 version using command prompt , toUpperCase() and toLowerCase() not working reason

fun main()
{
var txt = "Hello World"
println(txt.toUpperCase())  
println(txt.toLowerCase())  
}


Error:
D:kt>kotlinc  Upper_Lower_case.kt
Upper_Lower_case.kt:4:13: warning: 'toUpperCase(): String' is deprecated. Use uppercase() instead.
println(txt.toUpperCase())
            ^
Upper_Lower_case.kt:5:13: warning: 'toLowerCase(): String' is deprecated. Use lowercase() instead.
println(txt.toLowerCase())

Using kotlin 1.8.22 version using command prompt , toUpperCase() and toLowerCase() not working reason

Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0 
    fun main()
{
var txt = "Hello World"
println(txt.uppercase())  
println(txt.lowercase())  
}

  2. 0

    kotlin 1.8.0

    fun main() {
        val str = "Hello, World!"
        val upperCaseStr = str.uppercase(Locale.getDefault())
        val lowerCaseStr = str.lowercase(Locale.getDefault())
    
        println("Original String: $str")
        println("Uppercase String: $upperCaseStr")
        println("Lowercase String: $lowerCaseStr")
    
        val char = 'a'
        val upperCaseChar = char.uppercaseChar()
        val lowerCaseChar = char.lowercaseChar()
    
        println("Original Char: $char")
        println("Uppercase Char: $upperCaseChar")
        println("Lowercase Char: $lowerCaseChar")
    }
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