Scala – Type Casting

  • date 24th April, 2021 |
  • by Prwatech |
  • 0 Comments

Type Casting means the conversion from one type to another type. scala also has a method of Type Casting. in scala type casting is done by using method called asInstanceOf[]

use case 1:

object prwatech {

  def display[A](y:String, x:A)

{

        println(y + ” = ” + x + ” is of type ” +  x.getClass.getName);

  }

// Main method

def main(args: Array[String])

{

        var i:Int = 10;

        var f:Float = 3e5f;

        var d:Double = 8.2;

        var c:Char = ‘e’;

        display(“i”, i);

        display(“f”, f);

        display(“d”, d);

        display(“c”, c);

        var i1 = i.asInstanceOf[Char]; //Casting

        var f1 = f.asInstanceOf[Double]; //Casting

        var d1 = d.asInstanceOf[Float]; //Casting

        var c1 = c.asInstanceOf[Int]; //Casting

        display(“i1”, i1);

        display(“f1”, f1);

        display(“d1”, d1);

        display(“c1”, c1);

    }

}

output

i = 10 is of type java.lang.Integer

f = 5.0 is of type java.lang.Float

d = 8.2 is of type java.lang.Double

c = e is of type java.lang.Character

i1 = is of type java.lang.Character

f1 = 5.0 is of type java.lang.Double

d1 = 8.2 is of type java.lang.Float

c1 = 101 is of type java.lang.Integer

use case 2:

object prwatech

{

    // Main method

    def main(args:Array[String])

    {

         val p = 15

        // Casting value of a into float

        val q = p.asInstanceOf[Float]

        println(“The value of p after” +

        ” casting into float is ” + q)

    }

}

output

The value of p after casting into float is 15.0

use case 3:

object prwatech

{

    // Main method

    def main(args:Array[String])

    {

         val x = 12.56

         val y = 3.12

        // Casting value of a into float

        val z = (x/y).asInstanceOf[Int]

        println(“The value of z after” +

        ” casting into Int is ” + z)

    }

}

output

The value of z after casting into Int is 4

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