string builder kotlin
// Step 1: Create a StringBuilder instance
val stringBuilder = StringBuilder()
// Step 2: Append a string to the StringBuilder
stringBuilder.append("Hello, ")
// Step 3: Append another string to the StringBuilder
stringBuilder.append("Kotlin!")
// Step 4: Convert StringBuilder to a String
val resultString = stringBuilder.toString()
// Step 5: Print or use the final result
println(resultString)