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Scala program to get the index of the first occurrence of the specified substring

Here, we are going to learn how to get the index of the first occurrence of the specified substring in Scala programming language?
Submitted by Nidhi, on May 22, 2021 [Last updated : March 10, 2023]

Scala – Index of First Occurrence of Substring in a String

Here, we will create a string and then we get the index of the first occurrence of specified substring using the indexOf() function. Then we will print the result on the console screen.

Scala code to find the index of first occurrence of substring in a string

The source code to get the index of the first occurrence of specified substring is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to get the index of
// first occurrence of specified substring

object Sample {
  def main(args: Array[String]) {
    var str: String = "Banana";
    var index: Int = 0;

    index = str.indexOf("na");
    printf("Index of first occurrence of substring 'na' is: %d\n", index);
  }
}

Output

Index of first occurrence of substring 'na' is: 2

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 a string variable str with the initial value "Banana". Then we got the index of the first occurrence of specified substring using the indexOf() method. After that, we printed the result on the console screen.

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