Scala example source code file (S8.scala)

This example Scala source code file (S8.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

a, a, b, b, m, m, s8, s8

The Scala S8.scala source code

/* I believe this code is correct, but the compiler rejects it:
**
** S8.scala:18: type mismatch;
** found   : M.x.A
** required: M.x.a.B
**        val y: x.a.B = new x.A(); //correct?
**                              ^
** For a given value x of type S8, type x.A should be
** a subtype of x.a.B.
*/
class S8() {
    val a: S8 = this;
    class A() extends a.B() {}
    class B() {}
}
object M {
    val x = new S8();
    val y: x.a.B = new x.A(); //correct?
}