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Scala program to append a string to an immutable string using the '++=' operator

Here, we are going to learn how to append a string to an immutable string using the '++=' operator in Scala programming language?
Submitted by Nidhi, on May 24, 2021 [Last updated : March 10, 2023]

Scala – Append a String to an Immutable String (Using '++=' Operator)

Here, we will create an immutable string using the StringBuilder class and then we will append a string to an immutable string using the "++=" operator and print the result on the console screen.

Scala code to append a string to an immutable string using the '++=' operator

The source code to appending a string to an immutable string using the "++=" operator is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to appending a string to
// an immutable string using "+=" operator

object Sample {
  def main(args: Array[String]) {
    val str = new StringBuilder("Hello ");

    // Appending a string to an immutable string
    str ++= "World";

    println(str);
  }
}

Output

Hello World

Explanation

In the above program, we used an object-oriented approach to create the program. And, we created an object Sample. Here, we defined main() function. The main() function is the entry point for the program.

In the main() function, we created an immutable string str using the StringBuilder class, which is initialized with "Hello ". Then we appended a string "World" to the immutable string using the "+=" operator. After that, we printed the result on the console screen.

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