Scala String indexOf(String str) method with example

The indexOf(String str) method is utilized to return the index of the sub-string which occurs first in the string stated.

Method Definition: indexOf(String str)
Return Type: It returns the index of the sub-string which is specified in the argument of the method.

Example #1:

// Scala program of int indexOf()
// method

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {

        // Applying indexOf method
        val result = "NidhiSingh".indexOf("dh")

        // Displays output
        println(result)

    }
}

Output:

2

Example #2:

// Scala program of int indexOf()
// method

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {

        // Applying indexOf method
        val result = "NidhiSingh".indexOf("Sin")

        // Displays output
        println(result)

    }
}

Output:

5