Scala example source code file (t2669.scala)

This example Scala source code file (t2669.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

array, array, arraylist, arraylist, assertionerror, t, test2629, test2669, test2669, tvector2639, unit, util, vector, vector

The Scala t2669.scala source code

// #2629, #2639, #2669
object Test2669 {

  def test[T](l: java.util.ArrayList[_ <: T]) = 1
  test(new java.util.ArrayList[String]())

}

import java.util.ArrayList

object Test2629 {
  def main(args: Array[String]): Unit = {
    val l = new ArrayList[String](1)
    val m = new ArrayList(l)

    println(l.size)
    println(m.size)
  }
}


import java.util.Vector

// scalac cannot detect lack of type params, but then throws AssertionError later:
class TVector2639 {
  val b = new Vector  // this line passed without error detected 
  val a = new Vector(1) // this line caused throwing AssertionError when scalac
}