Scala List addString() method with a separator with example

This method is same as addString() method but here a separator is also included.

Method Definition: def addString(b: StringBuilder, sep: String): StringBuilder

Return Type: It returns the elements of the list to a string builder along with a separator between them.

Example #1:

// Scala program of addString()
// method with a separator

// Creating object
object GfG
{

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

        // Creating a list
        val m1 = List(1, 3, 5, 2)

        // Applying addString method
        val res = m1.addString(new StringBuilder(), "*")

        // Displays output
        println(res)

    }
}

Output:

1*3*5*2

Example #2:

// Scala program of addString()
// method with a separator

// Creating object
object GfG
{

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

        // Creating a list
        val m1 = List(1, 3, 5, 2)

        // Applying addString method
        val res = m1.addString(new StringBuilder(), "_")

        // Displays output
        println(res)

    }
}

Output:

1_3_5_2