Scala example source code file (sysprops.scala)

This example Scala source code file (sysprops.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, dingusint, dingusint, exception, prop, prop, test, unit, unit

The Scala sysprops.scala source code

import sys._

/** Basic sys.Prop test. */
object Test {
  val key = "ding.dong.doobie"
  
  def bool() = {
    val prop = BooleanProp.valueIsTrue(key)
    assert(prop.key == key)
  
    prop.clear()
    assert(!prop.value)
    assert(!prop.isSet)
    assert(prop.get != null)
  
    prop set "dingus"
    assert(prop.get == "dingus")
    assert(!prop.value)
    prop set "true"
    assert(prop.value)
    prop.toggle()
    assert(!prop.value)
    prop.enable()
    assert(prop.value)
    prop.disable()
    assert(!prop.value)
  }
  def int() = {
    val prop = Prop[Int](key)
    prop.clear()
    assert(prop.value == 0)
    prop.set("523")
    assert(prop.value == 523)
    prop.set("DingusInt")
    
    try { println(prop.value) ; assert(false, "should not get here") }
    catch { case _: Exception => () }
  }
  def double() = {
    val prop = Prop[Double](key)
    prop.set("55.0")
    assert(prop.value == 55.0)
  }
  
  def main(args: Array[String]): Unit = {
    bool()
    int()
    double()
  }
}