Scala Map iterator method with example

The iterator method is utilized to give an iterator.

Method Definition: def iterator: Iterator[(A, B)]

Return Type: It returns a non-empty iterator for non-empty map and returns an empty iterator for empty map.

Example #1:

// Scala program of iterator
// method

// Creating object
object GfG
{

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

        // Creating a map
        val m1 = Map("geeks" -> 5, "for" -> 3, "cs" -> 2)

        // Applying iterator method
        val result = m1.iterator

        // Displays output
        println(result)

    }
}

Output:

non-empty iterator

Example #2:

// Scala program of iterator
// method

// Creating object
object GfG
{

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

        // Creating a map
        val m1 = Map()

        // Applying iterator method
        val result = m1.iterator

        // Displays output
        println(result)

    }
}

Output:

empty iterator