How come the following code prints Success(4) if i'm throwing an exception inside?

Question

object MyRealMainObj extends App {

  println(
    Try(1)
      .map(doOne)
      .map(doTwo)

  )

  def doOne(i: Int): Int = i + 1; throw new RuntimeException(\"failed         


        

Answer 1

wrap the code inside curly braces like,

def doOne(i: Int): Int = {i + 1; throw new RuntimeException("failed in one")}

The throw new RuntimeException("failed in one") is not within the function it is a separate line inside main flow.