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scalainheritancesuperclasssuper

in Scala, how to avoid overriding super.method() in a subclass?

I have 3 classes:

class B extends A {
  def sup: Unit = {
    super.method()
  }

  override def method(): Unit = {
  ....
  }
}

object C extends B

If I call C.sup(), instead of calling method() of A, it will call the overriden method() of B, is there a way to avoid this behaviour?

Solution

  • I don't have the behavior your describe:

    C:\...>scala
Welcome to Scala version 2.11.1 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_60).
Type in expressions to have them evaluated.
Type :help for more information.

scala> :paste
// Entering paste mode (ctrl-D to finish)

class A {
  def method(): Unit = println("A.method")
}

class B extends A {
  def sup(): Unit = super.method()
  override def method(): Unit = println("B.method")
}

class C extends B

// Exiting paste mode, now interpreting.

defined class A
defined class B
defined class C

scala> val c = new C
c: C = C@62833051

scala> c.sup()
A.method

    As you can see, c.sup() calls A.method, not B.method.