📌 Strings in Kotlin

In Kotlin, a String is a sequence of characters enclosed within double quotes (" "). Strings are immutable, meaning their contents cannot be changed once created. Kotlin provides various functions and operations to manipulate and handle strings efficiently.

✅ Creating Strings

📌 1. String Declaration

kotlin
val greeting: String = "Hello, Kotlin!"println(greeting) // Output: Hello, Kotlin!

📌 2. Multiline String (Raw String)

Use triple quotes """ """ to declare a multiline string.

kotlin
val multilineText = val name = "Vikash"val age = 30println("My name is $name and I am  years old.")

Output:

pgsql
My nameis Vikash and I am 30 years old.

• For expressions, use ${}:

kotlin
val a = 5val b = 10println("The sum of $a and  is ${a + b}")

Output:

python
The sum of 5and10is15

✅ String Comparison in Kotlin

📌 1. Using == for Structural Comparison

• Compares the content of two strings.

kotlin
val str1 = "Kotlin"val str2 = "Kotlin"println(str1 == str2) // Output: true

📌 2. Using === for Referential Comparison

• Compares memory addresses (checks if both refer to the same object).

kotlin
val str3 = "Kotlin"val str4 = str3println(str3 === str4) // Output: true

✅ String Iteration

You can iterate over the characters of a string using a for loop:

kotlin
val str = "Hello"for (char in str) {    println(char)}

Output:

nginx
Hello

✅ Convert String to Other Types

You can easily convert a string to other data types using functions like:

✅ Conclusion

• Strings are immutable in Kotlin.

• Use string interpolation for cleaner code.

• Perform string operations using various built-in functions.

• Compare strings using == and ===.

• Convert between data types easily using type conversion functions.