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Scala Iterator hasNext() method with example

  • Last Updated : 30 Jun, 2019

The hasNext() method belongs to the Abstract Value Members of the Class AbstractIterator. It is defined in the class Iterator. It checks whether there is a next element available or not.

Method Definition : abstract def hasNext: Boolean

Return Type :It returns true if there is a next element, else it returns false.

Example #1:




// Scala program of hasNext()
// method
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating an Iterator 
        val iter = Iterator(2, 3, 4, 5)
          
        // Applying hasNext method 
        val result = iter.hasNext
          
        // Displays output
        println(result)
      
    }
}
Output:



true

Therefore, true is returned as there is a next element.
Example #2:




// Scala program of hasNext()
// method
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating an empty Iterator 
        val iter = Iterator()
          
        // Applying hasNext method 
        val result = iter.hasNext
          
        // Displays output
        println(result)
      
    }
}
Output:
false

Therefore, false is returned as there is no next element.




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